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This is your last chance to win this week. Here is my weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

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Cold high pressure (shaded “Arch shape”) moves over the Pacific Northwest. A frontal system can be seen as it moves down from the North through Oregon bringing colder air and more sunshine with it. That ridge aloft along with high pressure (Blue “H”) at the surface will keep storm systems away from the Pacific Northwest.

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Advisories:  A FREEZE WARNING IS IN EFFECT FROM 1 AM UNTIL 8 AM SATURDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A FROST ADVISORY IS IN EFFECT FROM 1 AM UNTIL 8 AM SATURDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy this evening, mostly cloudy with patchy fog and freezing fog tonight, patchy fog and freezing fog Saturday AM, mostly cloudy in the afternoon, mostly cloudy with patchy fog and freezing fog Saturday night and Sunday AM, partly cloudy in the  afternoon and evening,  mostly cloudy with patchy fog and freezing fog Sunday night and Monday AM, then partly cloudy in the afternoon and Monday night lows 26-22 warming to 29 Monday night highs 38-42. Mostly cloudy with patchy AM fog and freezing fog, partly cloudy Tuesday afternoon, mostly clear Tuesday night, mostly cloudy AM fog and freezing fog, partly cloudy Wednesday afternoon and Wednesday night, mostly cloudy with patchy fog and freezing fog again Thursday AM, then just partly cloudy Thursday afternoon highs near 48 lows 32-35. (seasonal averages high 47 low 34)

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Forecast for the Umpqua Basin including Roseburg: Partly cloudy this evening, mostly cloudy with patchy fog and freezing fog late tonight and early Saturday AM, mostly cloudy in the afternoon, mostly cloudy with patchy fog and freezing fog Saturday night and Sunday AM, mostly cloudy in the afternoon, partly cloudy with areas of patchy fog and freezing fog Sunday night, partly cloudy with patchy AM and late night fog and freezing fog Monday lows 27-22 warming to 29 Monday night highs 43-45. Patchy AM fog and freezing fog Tuesday, sunny in the afternoon with some lingering patchy fog, patchy evening fog, clear with areas of fog and freezing fog late Wednesday night and Thursday AM, sunny in the afternoon, then partly cloudy with patchy fog and freezing fog late night and early Friday AM, then partly cloudy Friday afternoon highs 45-52 lows 30-35. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Partly cloudy this evening, mostly cloudy tonight, cloudy Saturday, mostly cloudy with a slight (20%) chance of coastal showers, a slight (20%) chance of evening showers inland and a slight (20%) chance of rain and snow showers late Saturday night, mostly cloudy Sunday, then partly cloudy Sunday night through Monday night lows 35-32 warming to 37 Monday night highs 45-48. Sunny Tuesday, Wednesday, and Thursday with clear nights, then partly cloudy Thursday night and Friday highs 50-48 warming to 52 Friday lows near 34-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Partly cloudy with a slight (20%) chance of snow showers this evening, partly cloudy tonight, just mostly cloudy Saturday and Saturday night, then partly cloudy Sunday through Monday night free air freezing level at the surface tonight through Sunday night, 3,500 ft. Monday, then 6,000 ft. Monday night lows 13-22 highs 30-26 warming to 34 Monday. Mostly sunny Tuesday, Wednesday, Thursday, and Friday with mostly clear skies each night free air freezing level 8,000 ft. Tuesday, 10,000 ft. Tuesday night through Thursday night, then 9,000 ft. Friday highs 43-46 cooling to 40 Friday lows 27-25.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

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Today is your last day this week to win. Here is my weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

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Another upper level trough of low pressure (shaded “U” shape) has moved through Oregon as cold high pressure (shaded “Arch shape”) moves toward the Pacific Northwest. The next frontal system can be seen as it moves down from the North bringing colder air with it. High pressure at the surface (blue”H” offshore) and aloft will take over next week bringing sunshine and dry weather.

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Advisories: A DENSE FOG ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR THE LOWER COLUMBIA-I-5 CORRIDOR, AND THE CENTRAL WILLAMETTE VALLEY INCLUDING SALEM. A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 10 AM SATURDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy with AM fog, a slight (20%) chance of rain and snow showers until early afternoon, partly cloudy for the rest of this afternoon, partly cloudy this evening, mostly cloudy with patchy fog late tonight, patchy fog and freezing fog Saturday AM, mostly cloudy in the afternoon, a slight (20%) chance of rain and snow showers Saturday evening, mostly cloudy wit patchy fog and freezing fog Saturday night and Sunday AM, a mix of clouds and sun in the afternoon, then partly cloudy Sunday night highs 42-38 lows near 27. Patchy AM fog and mostly cloudy Monday AM, partly cloudy in the afternoon and Monday night, patchy AM fog and partly cloudy Tuesday and Tuesday night, AM fog, partly cloudy Wednesday, then just partly cloudy Wednesday night and Thursday highs 43-50 lows 30-35. (seasonal averages high 47 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers likely (60%) this AM, a good (50%) chance of rain and snow showers this afternoon (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 900 ft.), partly cloudy this evening, mostly cloudy with a slight (20%) chance of rain and snow showers tonight (under 0.10 in. of rain possible, snow level 1,000 ft. falling to 100 ft.), patchy fog and freezing fog late at night and early Saturday AM, mostly cloudy with a slight (20%) chance of AM snow showers, mostly cloudy Saturday afternoon, a slight (20%) chance of rain and snow showers Saturday night, patchy fog and freezing fog late at night and Sunday AM, then mostly cloudy in the afternoon, partly cloudy with areas of patchy fog and freezing fog Sunday night highs 40-44 lows 29-22 warming to 26 Sunday night. Partly cloudy with patchy AM and late night fog and freezing fog Monday through Tuesday night, early AM and late night fog and freezing fog Wednesday, mostly sunny in the afternoon and mostly clear at night, AM fog and freezing fog then just partly cloudy Thursday highs 45-52 lows 30-35. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: AM coastal showers likely (60%) and a good (50%) chance of rain and snow showers this afternoon while AM rain and snow showers likely (70%) inland with a good (50%) chance of rain and snow showers this afternoon (0.10 in. of rain possible, snow level 1,500 ft.), partly cloudy with a (40%) chance of coastal showers this evening and a (30%) chance of rain late tonight while a slight (20%) chance of evening showers inland and a slight (20%) chance of rain and snow late tonight (snow level 1,500 ft.), a slight (20%) chance of AM rain and snow showers with a (30%) chance of rain inland Saturday while a (30%) chance of coastal showers (snow level 900 ft.), a (30%) chance of coastal showers while slight (20%) chance of evening showers and a (40%) chance of rain and snow inland Saturday night, mostly cloudy Sunday, then partly cloudy Sunday night highs 44-47 lows 37-32 warming to 36 Sunday night. Partly cloudy Monday through Thursday highs 48-53 lows near 37-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Mostly cloudy with a (40%) chance of snow showers this AM until early afternoon, partly cloudy with a slight (20%) chance of snow showers this afternoon, a slight (20%) chance of evening snow showers, partly cloudy tonight, just mostly Saturday, a slight (20%) chance of snow showers at night, partly cloudy Sunday and Sunday night snow level at the surface today and tonight, free air freezing level at the surface  Saturday night, snow level at the surface Sunday, then free air freezing level at the surface Sunday night highs 25-32 lows 13-16. Partly cloudy Monday and Monday night, mostly sunny Tuesday Wednesday, and Thursday with mostly clear skies each night free air freezing level 3,500 ft. Monday, 6,500 ft. Monday night, 8,000 ft. Tuesday, then 10,000 ft. Tuesday night through Thursday highs 33-45 lows 23-27.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

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Here is my weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

Another upper level trough of low pressure (shaded “U” shape) has moved into Oregon as cold high pressure (shaded “Arch shape”) moves toward the Pacific Northwest. The next frontal system can be seen as it moved through on Wednesday. High pressure at the surface (blue”H” offshore) and aloft will take over next week bringing sunshine and dry weather.

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Advisories: A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM FRIDAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM FRIDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM FRIDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM FRIDAY ABOVE 1,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY JACKSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with (40%) chance of rain and snow showers tonight with patchy fog late (under 0.10 in. of rain possible), mostly cloudy with AM fog a slight (20%) chance of rain and snow showers, partly cloudy Friday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late Friday night and Saturday AM, mostly cloudy with a slight (20%) chance of rain and snow showers Saturday afternoon, a (30%) chance of rain and snow showers in the evening, a slight (20%) chance of rain and snow showers Saturday night, patchy AM fog, a mix of clouds and sun Sunday, then partly cloudy at night lows 32-25 highs 40-38. Patchy AM fog and mostly cloudy Monday AM, partly cloudy in the afternoon and Monday night, patchy AM fog and partly cloudy Tuesday through Wednesday, then just partly cloudy Wednesday night and Thursday highs 43-48 lows 30-35. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers likely (60%) tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 500 ft.), rain and snow showers likely (60%) Friday AM, a good (50%) chance of rain and snow showers in the afternoon (under .10 in. of rain possible, 1 in. of snow possible, snow level 400 ft. rising to 1,500 ft. in the afternoon), mostly cloudy with a slight (20%) chance of rain and snow showers Friday night (under 0.10 in. of rain possible, evening snow level 2,000 ft), mostly cloudy with a slight (20%) chance of AM rain, a slight (20%) chance of rain and snow Saturday afternoon (snow level 2,000 ft.), a (30%) chance of rain and snow  Saturday night   mostly cloudy with patchy AM fog, then partly cloudy in the afternoon and Sunday night lows 32-26 highs 40-44. Mostly cloudy with patchy AM fog and freezing fog Monday, partly cloudy in the afternoon and Monday night, patchy AM fog and freezing fog, partly cloudy Tuesday afternoon and night, areas of AM fog, sunny Wednesday afternoon, mostly clear at night, then just partly cloudy Thursday highs 45-52 lows 30-35. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal showers likely (60%) while inland rain and snow showers likely (70%) this evening and rain and snow showers late tonight (0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.) and breezy (wind: NW 15-25 mph at the shore and NW 10-20 mph inland), AM coastal showers likely (60%) and a good (50%) chance of rain and snow showers Friday afternoon while AM rain and snow showers likely (70%) inland with a good (50%) chance of rain and snow showers in the afternoon (0.10 in. of rain possible, 1 in. of snow possible, snow level 900 ft. rising to 1,500 ft.), mostly cloudy with a (40%) chance of coastal showers in the evening and a (%) chance of rain late Friday night while a slight (20%) chance of evening showers inland and a slight (20%) chance of rain and snow late Friday night (snow level 2,000 ft. falling to 1,500 ft. late) , a (30%) chance of rain Saturday (AM snow level 2,000 ft.), a good (50%) chance of coastal rain and a (40%) chance of rain and snow inland Saturday night, mostly cloudy Sunday, then partly cloudy Sunday night lows 37-32 warming to 36 Sunday night highs near 47. Partly cloudy Monday through Thursday highs 48-53 lows near 37-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Cloudy with a (40%) chance of snow showers tonight and Friday AM, a mix of clouds and sun with a slight (20%) chance of snow showers in the afternoon, partly cloudy with a slight (20%) chance of evening snow showers, mostly cloudy Friday night, mostly cloudy with a slight (20%) chance of snow Saturday afternoon,  a (30%) chance of snow Saturday evening, a slight (20%) chance of snow showers at night, a mix of clouds and sun Sunday, then partly cloudy Sunday night snow level at the surface tonight through Saturday night, free air freezing level at the surface Sunday and Sunday night lows near 16 highs 22-30. Partly cloudy Monday and Monday night, mostly sunny Tuesday Wednesday, and Thursday with mostly clear skies each night free air freezing level 3,500 ft. Monday, 6,500 ft. Monday night, 8,000 ft. Tuesday, then 10,000 ft. Tuesday night through Thursday highs 33-45 cooling to 42 Thursday lows 23-27.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

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Here is my weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

Another upper level trough of low pressure (shaded “U” shape) has moved into Oregon as cold high pressure (shaded “Arch shape”) moves toward the Pacific Northwest. The next frontal system can be seen as it moved through on Wednesday. Snow levels will fall to about 1,000 ft. tonight, but I don’t expect the snow to stick enough to pile up any significant accumulation on the valley floor. We’ll have to keep an eye on that situation. High pressure at the surface (blue”H” offshore) and aloft will take over next week bringing sunshine and dry weather.

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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 12 PM TODAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 12 PM TODAY ABOVE 1,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY,  AND JOSEPHINE COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 12 PM TODAY FOR JACKSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTH OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with rain and snow showers likely (60%) this AM, a good (50%) chance of rain and snow showers this afternoon (0.10 in. of rain possible, just a dusting of snow possible), cloudy with a (40%) chance of rain and snow showers tonight (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of rain and snow showers Friday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain and snow late Friday night, mostly cloudy with a slight (20%) chance of rain and snow Saturday AM, a good (50%) chance of rain and snow in the afternoon, cloudy with a good (50%) chance of rain and snow showers Saturday night highs 42-39 lows 30-25. A mix of clouds and sun with a slight (20%) chance of rain and snow showers Sunday, mostly cloudy Sunday night, patchy AM fog and freezing fog Monday, mostly cloudy in the afternoon, partly cloudy Monday night, AM fog,  a mix of clouds and sun Tuesday, partly cloudy at night, then AM fog and a mix of clouds and sun Wednesday highs 44-46 lows 30-35. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers likely (60%) today (0.10 in. of rain possible, 1 in. of snow possible                                                                                                                                                                                                                                                                                                                           at lower elevations, 1-2 in. of snow possible above 1,500 ft., snow level 400 ft. rising to 1,000 ft. in the afternoon), rain and snow showers likely (70%) tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.), rain and snow showers likely (60%) Friday AM, a good (50%) chance of rain and snow showers in the afternoon (under .10 in. of rain possible, 1 in. of snow possible, snow level 900 ft. rising to 1,500 ft. in the afternoon), mostly cloudy with a slight (20%) chance of rain and snow showers Friday night (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of AM rain, a (30%) chance of rain and snow Saturday afternoon (snow level 1,000 ft. rising to 1,500 ft.), rain and snow  likely (60%) Saturday night highs 40-44 lows 32-30 warming to 34 Saturday night. Mostly cloudy a (40%) chance of rain and snow showers Sunday, a slight (20%) chance of showers Sunday night, partly cloudy with patchy AM fog and freezing fog Monday AM, partly cloudy in the afternoon and Monday night, patchy AM fog, then just partly cloudy Tuesday afternoon highs 46-50 lows 32-38. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal showers likely (60%) with rain and snow showers likely (70%) inland this afternoon (0.10 in. of rain possible, 1-2 in. of snow possible, snow level 900 ft. rising to 1,500 ft.), coastal showers likely (60%) and rain and snow showers likely (70%) inland tonight (0.10 in. of rain possible, 1 in. of snow possible, snow level 1,500 ft. falling to 1,000 ft.), AM showers likely (60%), coastal showers likely (70%) Friday afternoon with inland rain and snow showers  (0.10 in. of rain possible) likely (60%), then mostly cloudy with a (40%) chance of showers Friday night, mostly cloudy with a good (50%) chance of showers Saturday (snow level 2,000 ft.), then rain likely (60%) Saturday night highs 44-47 lows 37-32 warming to 36 Saturday night. Mostly cloudy with a (40%) chance of showers Sunday, a slight (20%) chance of showers Sunday night, patchy AM fog, mostly cloudy Monday afternoon, partly cloudy at night, mostly cloudy with patchy AM fog, mostly sunny Tuesday afternoon, partly cloudy at night, mostly cloudy with areas of patchy AM fog, then mostly sunny Wednesday afternoon highs 46-53 lows near 39. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Mostly cloudy with snow showers likely (70%) today (1-4 in. of snow possible) cloudy with evening showers likely (60%), a good (50%) chance of snow showers tonight, mostly cloudy with a good (50%) of snow showers Friday AM, , partly cloudy with a slight (20%) chance of evening snow showers, then mostly cloudy Friday night, mostly cloudy with a slight (20%) chance of snow Saturday, then mostly cloudy with a good (50%) chance of snow Saturday night snow level at the surface today through Saturday night highs 27-23 warming to 28 Saturday lows near 14. A mix of clouds and sun with a (30%) chance of snow showers Sunday, partly cloudy Sunday night through Monday night, then mostly sunny Tuesday and Wednesday with mostly clear skies Tuesday night snow level at the surface Sunday and Sunday night, free air freezing level at the surface Monday, 5,500 ft. Monday night, 7,000 ft. Tuesday, 9,000 ft. Tuesday night, then 10,000 ft. Wednesday highs 29-40 lows 17-24.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

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Here is my weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

Another upper level trough of low pressure (shaded “U” shape) has moved in along the coast as cold high pressure (shaded “Arch shape”) moves away from the Pacific Northwest. The next frontal system can be seen moving through with its warm front past first and the cold front followed behind it today. Snow levels will fall to about 1,000 ft. Thursday night, but I don’t expect the snow to stick enough to pile up any significant accumulation on the valley floor. We’ll have to keep an eye on that situation. A frontal system will approach Oregon over the weekend returning the threat of falling snow levels.

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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM THURSDAY FOR THE COAST RANGE OF NORTHWEST OREGON. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY. A FREEZE WARNING IS IN EFFECT FROM 1 AM UNTIL 8 AM THURSDAY FOR SOUTH CENTRAL AND SOUTH OREGON COAST. A FROST ADVISORY IS IN EFFECT FROM 1 AM UNTIL 8 AM THURSDAY FOR SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 7 AM THURSDAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM THURSDAY ABOVE 1,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY,  AND JOSEPHINE COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM THURSDAY FOR JACKSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTH OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with evening showers likely (60%), rain and snow showers likely (60%) and colder late tonight (0.10 in. of rain possible, under 1 in. of snow possible), mostly cloudy with rain and snow showers likely (60%) Thursday AM, a good (50%) chance of rain and snow showers in the afternoon (under 0.01 in. of rain possible, under 1 in. of snow possible), a (40%) chance of rain and snow showers Thursday night (under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of rain and snow showers Friday AM, a slight (20%) chance of rain and snow showers in the afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain and snow late Friday night (snow level 1,000 ft.), mostly cloudy with a slight (20%) chance of rain and snow Saturday AM, a good (50%) chance of rain and snow in the afternoon, cloudy with a good (50%) chance of showers Saturday night lows 32-25 highs 42-39. A mix of clouds and sun with a slight (20%) chance of showers Sunday, a slight (20%) chance of showers Sunday night, patchy AM fog and freezing fog Monday, mostly cloudy in the afternoon, partly cloudy Monday night, AM fog,  a mix of clouds and sun Tuesday, partly cloudy at night, then AM fog and a mix of clouds and sun Wednesday highs 44-46 lows 30-35. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers tonight (0.20 in. of rain possible, 1 in. of snow possible lower elevations and 1-2 in. of snow possible above 1,500 ft., snow level 1,500 ft. falling to 400 ft. late at night), rain and snow showers likely (60%) Thursday (0.10 in. of rain possible, 1 in. of snow possible                                                                                                                                                                                                                                                                                                                           at lower elevations, 1-2 in. of snow possible above 1,500 ft., snow level 400 ft. rising to 900 ft. in the afternoon), rain and snow showers likely (70%) Thursday night (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.), rain and snow showers likely (60%) Friday AM, a good (50%) chance of rain and snow showers in the afternoon (under .10 in. of rain possible, snow level 900 ft. rising to 1,500 ft. in the afternoon), mostly cloudy with a slight (20%) chance of rain and snow showers Friday night (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of AM rain, a (30%) chance of rain and snow Saturday afternoon, rain and snow showers likely (60%) Saturday night lows 32-30 warming to 34 Saturday night highs 40-44. Mostly cloudy a (40%) chance of rain and snow showers Sunday, a slight (20%) chance of showers Sunday night, partly cloudy with patchy AM fog and freezing fog Monday AM, partly cloudy in the afternoon and Monday night, patchy AM fog, then just partly cloudy Tuesday afternoon highs 46-50 lows 32-38. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal showers and isolated thunderstorms with inland rain and snow showers tonight (0.15 in. of rain possible, 1 in. of snow possible, snow level 1,500 ft. falling to 1,000 ft. late at night), coastal showers likely (60%) with rain and snow showers likely (70%) inland Thursday afternoon (0.10 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.), coastal showers likely (60%) and rain and snow showers likely (70%) inland Thursday night (0.10 in. of rain possible, 1 in. of snow possible, snow level 1,500 ft. falling to 1,000 ft.), AM showers likely (60%), coastal showers likely (70%) Friday afternoon with inland rain and snow showers  (0.10 in. of rain possible) likely (60%), then mostly cloudy with a (40%) chance of showers Friday night, mostly cloudy with a good (50%) chance of showers Saturday, then showers likely (60%) Saturday night lows 35-38 cooling to 32 Friday night warming to 36 Saturday night highs 44-47. Mostly cloudy with a (40%) chance of showers Sunday, a slight (20%) chance of showers Sunday night, patchy AM fog, mostly cloudy Monday afternoon, partly cloudy at night, mostly cloudy with patchy AM fog, mostly sunny Tuesday afternoon, partly cloudy at night, mostly cloudy with areas of patchy AM fog, then mostly sunny Wednesday afternoon highs 46-53 lows near 39. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Mostly cloudy with snow showers (1-3 in. of snow possible) and colder tonight, snow showers likely (70%) Thursday (1-4 in. of snow possible) cloudy with evening showers likely (60%), a (70%) chance of snow showers Thursday night (2 in. of snow possible), mostly cloudy with a good (50%) of snow showers Friday, partly cloudy with a slight (20%) chance of evening snow showers, mostly cloudy with a slight (20%) chance of snow late Friday night, a slight (20%) chance of snow Saturday, then mostly cloudy with a good (50%) chance of snow showers Saturday night snow level at the surface tonight through Saturday night lows 19-14 highs 27-23 warming to 28 Saturday. A mix of clouds and sun with a (30%) chance of snow showers Sunday, partly cloudy with a slight (20%) chance of snow showers Sunday night, just partly cloudy Monday and Monday night, then mostly sunny Tuesday and Wednesday with mostly clear skies Tuesday night snow level at the surface Sunday and Sunday night, free air freezing level at the surface Monday, 5,500 ft. Monday night, 7,000 ft. Tuesday, 9,000 ft. Tuesday night, then 10,000 ft. Wednesday highs 29-40 lows 17-24.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

________________

Here is my weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

Another upper level trough of low pressure (shaded “U” shape) has moved in along the coast as cold high pressure (shaded “Arch shape”) moves away from the Pacific Northwest. The next frontal system can be seen moving in with its warm front already past us and the cold front following behind it today. Snow levels will fall to about 1,000 ft. tonight through Thursday night, but I don’t expect the snow to stick enough to pile up any significant accumulation on the valley floor. We’ll have to keep an eye on that situation. A frontal system will approach Oregon over the weekend returning the threat of falling snow levels.

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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM TODAY UNTIL 4 AM THURSDAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 PM TODAY UNTIL 4 AM FRIDAY ABOVE 1,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY, JACKSON COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 AM TODAY UNTIL 4 AM THURSDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTH OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.  A WIND ADVISORY IS IN EFFECT FROM 1 AM UNTIL 1 PM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with rain this AM, showers this afternoon (0.50 in. of rain possible), cloudy with evening showers likely (60%), rain and snow showers likely (60%) and colder tonight (0.15 in. of rain possible), partly cloudy Thursday AM, mostly cloudy with rain or snow showers likely (60%) Thursday afternoon (under 0.01 in. of rain possible), a (40%) chance of rain and snow showers Thursday night (under 0.01 in. of rain possible, snow level 1,000 ft.), a mix of clouds and sun with a good (50%) chance of rain and snow showers Friday, then a (40%) chance of rain Friday night highs 45-38 lows 33-30. Mostly cloudy with a (40%) chance of rain Saturday, a good (50%) chance of showers Saturday night and Sunday, a (30%) chance of showers Sunday night, a (40%) chance of showers Monday, mostly cloudy with a slight (20%) chance of showers Monday night, then a mix of clouds and sun with a (30%) chance of showers Tuesday highs 44-46 lows near 34. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with AM rain, rain and snow showers this afternoon (0.30 in. of rain possible, 1-2 in. of snow possible, snow level 3,500 ft. falling to 2,000 ft. this afternoon) and breezy (wind: SW 15-25 mph decreasing to SW 10-15 mph this afternoon), rain and snow showers with isolated thunderstorms this evening, rain and snow showers late tonight (0.25 in. of rain possible, 1 in. of snow possible                                                                                                                                                                                                                                                                                                                             , snow level 1,500 ft. falling to 400 ft. late at night), rain and snow showers likely (60%) Thursday (0.10 in. of rain possible, 1 in. of snow possible at lower elevations, 1-2 in. of snow possible above 1,500 ft., snow level 600 ft.), rain and snow showers likely (60%) Thursday night (under 0.10 in. of rain possible, snow level 1,000 ft.), rain and snow showers likely (60%) Friday (under .10 in. of rain possible, snow level 900 ft. rising to 1,500 ft. in the afternoon), then mostly cloudy with a (40%) chance of rain and snow showers Friday night highs 44-40 warming to 43 Friday lows near 32. Mostly cloudy with a (40%) chance of rain and snow Saturday, rain and snow showers likely (60%) Saturday night, a (40%) chance of rain and snow showers Sunday, a slight (20%) chance of showers Sunday night, mostly cloudy with patchy AM fog and freezing fog with a slight (20%) chance of showers Monday AM, partly cloudy with a slight (20%) in the afternoon, mostly cloudy Monday night, patchy AM fog, then just mostly cloudy Tuesday highs 42-49 lows 32-36. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain this AM, coastal showers and isolated thunderstorms this afternoon and evening while inland afternoon showers (0.55 in. of rain possible, snow level 2,000 ft.), coastal showers likely (60%) with isolated thunderstorms late tonight while rain and snow showers and isolated thunderstorms inland at night (0.15 in. of rain possible, 1-2 in. of snow possible, snow level 1,000 ft. late), coastal showers likely (60%) with isolated thunderstorms Thursday AM and showers likely (60%) in the afternoon while rain and snow showers likely (70%) with isolated thunderstorms inland in the afternoon (0.15 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.), coastal showers likely (60%) and rain and snow showers likely (60%) inland Thursday night (under 0.10 in. of rain possible, snow level 1,500 ft. falling to 1,000 ft.), coastal showers likely (60%) in the afternoon with inland rain and snow showers likely (60%), then mostly cloudy with a (40%) chance of showers Friday night highs 47-44 warming to 39 Friday lows near 36. Mostly cloudy with a good (50%) chance of rain Saturday, a good (50%) chance of showers Saturday night and Sunday, a slight (20%) chance of showers Sunday night, patchy AM fog, mostly cloudy with a slight (20%) chance of showers Monday, mostly cloudy at night, then patchy AM fog with mostly cloudy skies Tuesday highs 46-52 lows 36-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Mostly cloudy with rain and snow this AM,  rain and snow showers this afternoon (0.50 in. of rain possible, 4-7 in. of snow possible) and breezy (wind: SW 15-25 mph gusts to 50 mph, shifting W 10-15 mph gusts to 40 mph in the afternoon), snow showers (1-3 in. of snow possible) and colder tonight, a good (50%) chance of snow showers Thursday and Thursday night, a mix of clouds and sun with a good (50%) of snow showers Friday, then mostly cloudy with a (40%) chance of snow Friday night snow level 4,500 ft. falling to 2,500 ft. this afternoon, then at the surface tonight through Friday night highs 32-26 lows 20-15. Mostly cloudy with a (40%) chance of snow Saturday, a good (50%) chance of snow showers Saturday night and Sunday, a (40%) chance of snow showers Sunday night, a mix of clouds and sun with a slight (20%) chance of rain and snow showers Monday, mostly cloudy with slight (20%) chance of rain and snow showers Monday night, then a mix of clouds and sun with a slight (20%) chance of rain and snow showers Tuesday snow level at the surface Saturday through Sunday night, 2,500 ft. Monday, 4,500 ft. Monday night, then 5,500 ft. Tuesday highs 29-34 lows 20-22.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

________________

Here is my new weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

An upper level trough of low pressure (shaded “U” shape) has moved past us and now cold high pressure (shaded “Arch shape”) will spread colder air into the Pacific Northwest. The next frontal system can be seen moving in with its warm front ahead and the cold front will follow behind it. Yet another frontal system will move in by mid week (position shown is Friday) to continue the rain chances. Snow levels will fall to about 1,000 ft. Friday night and Saturday, but I don’t expect any snow to stick enough to pile up any accumulation on the valley floor. We’ll have to keep an eye on that situation.

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Advisories:  A WINTER WEATHER ADVISORY IS N EFFECT FROM 7 AM WEDNESDAY UNTIL MIDNIGHT WEDNESDAY NIGHT FOR THE NORTHERN OREGON CASCADES (NOT INCLUDING THE CASCADES IN LANE COUTY). A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM WEDNESDAY UNTIL 4 AM THURSDAY ABOVE 1,000 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 PM WEDNESDAY UNTIL 4 AM FRIDAY ABOVE 1,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY, JACKSON COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 AM WEDNESDAY UNTIL 4 AM THURSDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTH OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.  A WIND ADVISORY IS IN EFFECT FROM 1 AM UNTIL 1 PM WEDNESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with a good (50%) chance of rain late tonight (0.10 in. of rain possible) and breezy (wind: S 10-15 mph increasing to S 15-25 mph late), rain Wednesday (0.50 in. of rain possible) and breezy (wind: SW 15-25 mph shifting W 10-15 mph in the afternoon), evening showers, rain and snow showers and colder Wednesday night (0.15 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.), mostly cloudy with a good (50%) chance of rain or snow showers Thursday (under 0.01 in. of rain possible), a (40%) chance of rain and snow showers Thursday night (snow showers 1,000 ft.), mostly cloudy with a good (50%) chance of AM rain and snow showers Friday, a good (50%) chance of afternoon showers, then a (40%) chance of rain Friday night lows 42-30 highs 45-38. Mostly cloudy with a (40%) chance of rain Saturday, a good (50%) chance of showers Saturday night and Sunday, a (30%) chance of showers Sunday night, a (40%) chance of showers Monday, mostly cloudy with a slight (20%) chance of showers Monday night, then a mix of clouds and sun with a (30%) chance of showers Tuesday highs 44-46 lows near 34. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a (30%) chance of rain late tonight and breezy (wind: S 15-25 mph), AM rain, rain and snow showers Wednesday afternoon (0.30 in. of rain possible, 1-2 in. of snow possible) and breezy (wind: SW 15-25 mph decreasing to SW 10-15 mph in the afternoon), rain and snow showers with isolated thunderstorms in the evening, rain and snow showers late Wednesday night (0.25 in. of rain possible, 1 in. of snow possible lower elevations and 1-2 in. of snow possible above 1,500 ft., snow level 1,500 ft. falling to 400 ft. late at night), rain and snow showers likely (60%) Thursday (under 0.10 in. of rain possible), a (40%) chance of rain and snow showers Thursday night (under 0.10 in. of rain possible, snow level 600 ft.), rain and snow showers likely (60%) Friday, then mostly cloudy with a (40%) chance of rain and snow showers Friday night lows 42-32 highs 44-40 warming to 43 Friday. Mostly cloudy with a (40%) chance of rain and snow Saturday, rain and snow showers likely (60%) Saturday night, a good (50%) chance of rain and snow showers Sunday, a slight (20%) chance of showers Sunday night, mostly cloudy with patchy AM fog and freezing fog with a slight (20%) chance of showers Monday AM, partly cloudy in the afternoon, mostly cloudy Monday night, patchy AM fog, then just mostly cloudy Tuesday highs 44-49 lows 32-36. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal rain likely (60%) late tonight while a good (50%) chance of rain inland late tonight (0.10 in. of rain possible) and windy (wind: S 20-30 mph gusts to 45 mph), AM rain Wednesday, coastal showers and isolated thunderstorms in the afternoon and evening while inland afternoon showers (0.65 in. of rain possible, snow level 2,000 ft.), coastal showers likely (60%) with isolated thunderstorms late Wednesday night while rain and snow showers and isolated thunderstorms inland at night (0.15 in. of rain possible, 1-2 in. of snow possible, snow level 1,500 ft. falling to 1,000 ft. late), coastal showers likely (60%) with isolated thunderstorms Thursday AM and showers likely (60%) in the afternoon while rain and snow showers likely (70%) with isolated thunderstorms inland in the afternoon (0.10 in. of rain possible, snow level 900 ft.), a good (50%) chance of coastal showers and a good (50%) chance of rain and snow showers inland Thursday night,  rain and snow showers likely (60%) Friday AM, showers likely (60%) in the afternoon, then mostly cloudy with a (40%) chance of showers Friday night  lows 45-36 highs 47-44 warming to 39 Friday. Mostly cloudy with a good (50%) chance of showers Saturday, showers likely (70%) Saturday night, a (40%) chance of showers Sunday, a slight (20%) chance of rain Sunday night, patchy AM fog, mostly cloudy with a slight (20%) chance of showers Monday, mostly cloudy at night, then patchy AM fog with mostly cloudy skies Tuesday highs 47-52 lows 37-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Partly cloudy this evening, mostly cloudy with a slight (20%) chance of rain late tonight (0.10 in. of rain possible) and breezy (wind: SW 15-25 mph gusts to 40 mph), rain or snow Wednesday (0.50 in. of rain possible, 2-5 in. of snow possible)and breezy (wind: SW 15-25 mph gusts to 45 mph, shifting W 10-15 mph gusts to 35 mph in the afternoon), snow showers (1-3 in. of snow possible) and colder Wednesday night, a good (50%) chance of snow showers Thursday and Thursday night, a good (50%) of snow showers Friday AM, snow showers likely (60%) in the afternoon, then mostly cloudy with a (40%) chance of snow Friday night snow level 7,000 ft. tonight, 5,500 ft. falling to 2,500 ft. Wednesday afternoon,then at the surface Wednesday night through Friday night lows 28-15 highs 32-26. Mostly cloudy with a (40%) chance of snow Saturday, a good (50%) chance of snow showers Saturday night and Sunday, a (40%) chance of snow showers Sunday night, a mix of clouds and sun with a slight (20%) chance of rain and snow showers Monday, mostly cloudy with slight (20%) chance of rain and snow showers Monday night, then a mix of clouds and sun with a slight (20%) chance of rain and snow showers Tuesday snow level at the surface Saturday through Sunday night, 2,500 ft. Monday, 4,500 ft. Monday night, then 5,500 ft. Tuesday highs 29-34 lows 20-22.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

________________

Here is my new weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

An upper level trough of low pressure (shaded “U” shape) has moved past us and now cold high pressure (shaded “Arch shape”) will spread colder air into the Pacific Northwest. The next frontal system can be seen moving in with its warm front ahead and the cold front will follow behind it. Yet another frontal system will move in by mid week (position shown is Friday) to continue the rain chances. Snow levels will fall to about 1,000 ft. Friday night and Saturday, but I don’t expect any snow to stick enough to pile up any accumulation on the valley floor. We’ll have to keep an eye on that situation.

________________

Advisories:  A WIND ADVISORY IS IN EFFECT FROM 1 AM UNTIL 1 PM WEDNESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, CENTRAL, EASTERN, AND WESTERN LAKE COUNTY,

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with a good (50%) chance of rain today (0.10 in. of rain possible), a (40%) chance of rain this evening, rain late tonight (0.25 in. of rain possible), AM rain Wednesday, showers in the afternoon, rain or snow showers and colder Wednesday night,  mostly cloudy with AM rain or snow showers likely (60%), a good (50%) chance of rain or snow showers Thursday afternoon, then rain and snow showers likely (60%) Thursday night  highs 54-40 lows 40-30. Mostly cloudy with a good (50%) chance of rain and snow showers Friday (snow level 1,000 ft.), a (40%) chance of rain Friday night and Saturday, a good (50%) chance of showers Saturday night, a (40%) chance of showers Sunday, then mostly cloudy with a (30%) chance of showers Sunday night and Monday highs 40-43 lows near 33. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of showers today, rain late tonight and Wednesday AM, rain and snow and colder with isolated thunderstorms in the afternoon, rain and snow showers likely (70%) and colder with isolated thunderstorms Wednesday night (snow level 1,500 ft. falling to 600 ft. late at night),  a (40%) chance of snow showers and isolated thunderstorms Thursday AM, a good (50%) chance of rain and snow showers and isolated thunderstorms in the afternoon, a good (50%) chance of rain and snow showers in the evening, rain and snow showers likely (60%) late Thursday night highs 55-36 lows 40-32. Mostly cloudy with rain and snow showers likely (60%) Friday, a (30%) chance of rain and snow showers Friday night and Saturday, rain and snow showers likely (60%) Saturday night, a good (50%) chance of rain and snow showers Sunday and Sunday night, then mostly cloudy with a slight (20%) chance of showers Monday highs 40-45 lows 32-38 cooling to 35 Sunday night. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with patchy fog this AM and a (30%) chance of showers today, rain late tonight and breezy (wind: S 15-25 mph), AM coastal showers and isolated thunderstorms with rain in the afternoon and evening while inland rain and snow and isolated thunderstorms Wednesday afternoon and Wednesday night, rain and snow showers likely (60%) with isolated thunderstorms Thursday AM, rain and snow showers likely (70%) with isolated thunderstorms in the afternoon, a good (50%) chance of rain and snow showers in the evening, then mostly cloudy with rain and snow showers likely (60%) late Thursday night highs 55-45 lows 45-36. Mostly cloudy with showers likely (60%) Friday, a (40%) chance of showers Friday night and Saturday, showers likely (60%) Saturday night, mostly cloudy with a (40%) chance of showers Sunday and Sunday night, then mostly cloudy with a slight (20%) chance of showers Monday highs near 48 lows 36-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: AM clouds with a then a mix of clouds and sun this afternoon with a good (50%) chance of rain or snow (0.10 in. of rain possible), partly cloudy this evening, mostly cloudy with a good (50%) chance of rain late tonight (0.10 in. of rain possible), rain or snow Wednesday AM, snow showers and colder in the afternoon and breezy (wind: SW 15-25 mph gusts to 40 mph decreasing to SW 10-15 mph in the afternoon), snow showers and colder Wednesday night, mostly cloudy with AM snow showers likely (60%), a good (50%) chance of snow showers Thursday afternoon, then mostly cloudy with a good (50%) of snow showers Thursday night snow level 5,000 ft. today, 6,500 ft. Tuesday night, 4,500 ft. Wednesday AM, then at the surface Wednesday night through Thursday night highs 45-26 lows 28-16. Mostly cloudy with a good (50%) chance of snow showers Friday, a (40%) chance of snow Friday night, mostly cloudy with a (30%) chance of snow Saturday, a good (50%) chance of snow showers Saturday night, a (40%) chance of snow showers Sunday, a (30%) chance of snow showers Sunday night, then a mix of clouds and sun with a slight (20%) chance of snow showers Monday snow level at the surface Friday through Monday highs 25-32 lows 18-20.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

________________

Here is my new weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

An upper level trough of low pressure (shaded “U” shape) is sliding eastward through the Pacific Northwest. The next frontal system can be seen moving in with its warm front that already pushed in ahead and the cold front will follow behind it. Yet another frontal system will move in by mid week (position shown is Thursday) to continue the rain chances. Snow levels will fall to about 1,000 ft. Friday night and Saturday, but I don’t expect any snow to stick enough to pile up any accumulation on the valley floor.

________________

Advisories:  NONE AT THIS TIME.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with a good (50%) chance of rain late tonight (under 0.10 in. of rain possible), cloudy with a good (50%) chance of rain Tuesday (0.10 in. of rain possible), a (40%) chance of rain in the evening, rain late Tuesday night (0.25 in. of rain possible), AM rain Wednesday, showers in the afternoon, rain or snow showers and colder Wednesday night,  mostly cloudy with AM rain or snow showers likely (60%), a good (50%) chance of rain or snow showers Thursday afternoon, then rain and snow showers likely (60%) Thursday night lows 43-30 highs 54-40. Mostly cloudy with a good (50%) chance of rain and snow showers Friday (snow level 1,000 ft.), a (40%) chance of rain Friday night and Saturday, a good (50%) chance of showers Saturday night, a (40%) chance of showers Sunday, then mostly cloudy with a (30%) chance of showers Sunday night and Monday highs 40-43 lows near 33. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a (30%) chance of showers late tonight (0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers Tuesday, rain late Tuesday night and Wednesday AM, rain and snow and colder with isolated thunderstorms in the afternoon, rain and snow showers likely (70%) and colder with isolated thunderstorms Wednesday night (snow level 1,500 ft. falling to 600 ft. late at night),  a (40%) chance of snow showers and isolated thunderstorms Thursday AM, a good (50%) chance of rain and snow showers and isolated thunderstorms in the afternoon, a good (50%) chance of rain and snow showers in the evening, rain and snow showers likely (60%) late Thursday night lows 44-32 highs 55-36. Mostly cloudy with rain and snow showers likely (60%) Friday, a (30%) chance of rain and snow showers Friday night and Saturday, rain and snow showers likely (60%) Saturday night, a good (50%) chance of rain and snow showers Sunday and Sunday night, then mostly cloudy with a slight (20%) chance of showers Monday highs 40-45 lows 32-38 cooling to 35 Sunday night. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a slight (20%) chance of showers tonight (0.25 in. of rain possible), a (30%) chance of showers Tuesday, rain late Tuesday night and breezy (wind: S 15-25 mph), AM coastal showers and isolated thunderstorms with rain in the afternoon and evening while inland rain and snow and isolated thunderstorms Wednesday afternoon and Wednesday night, rain and snow showers likely (60%) with isolated thunderstorms Thursday AM, rain and snow showers likely (70%) with isolated thunderstorms in the afternoon, a good (50%) chance of rain and snow showers in the evening, then mostly cloudy with rain and snow showers likely (60%) late Thursday night lows 47-36 highs 55-45. Mostly cloudy with showers likely (60%) Friday, a (40%) chance of showers Friday night and Saturday, showers likely (60%) Saturday night, mostly cloudy with a (40%) chance of showers Sunday and Sunday night, then mostly cloudy with a slight (20%) chance of showers Monday highs near 48 lows 36-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Cloudy with rain or snow this evening, rain and snow tonight (0.25 in. of rain possible, 1 in. of snow possible), AM clouds then a mix of clouds and sun in the afternoon with a good (50%) chance of rain or snow Tuesday (0.10 in. of rain possible), partly cloudy in the evening, mostly cloudy with a good (50%) chance of rain late Tuesday night (0.10 in. of rain possible), rain or snow Wednesday AM, snow showers and colder in the afternoon and breezy (wind: SW 15-25 mph gusts to 40 mph), snow showers and colder Wednesday night, mostly cloudy with AM snow showers likely (60%), a good (50%) chance of snow showers Thursday afternoon, then mostly cloudy with a good (50%) of snow showers Thursday night snow level 5,000 ft. tonight and Tuesday, 6,500 ft. Tuesday night, 4,500 ft. Wednesday AM, then at the surface Wednesday night through Thursday night lows 32-16 highs 45-26. Mostly cloudy with a good (50%) chance of snow showers Friday, a (40%) chance of snow Friday night, mostly cloudy with a (30%) chance of snow Saturday, a good (50%) chance of snow showers Saturday night, a (40%) chance of snow showers Sunday, a (30%) chance of snow showers Sunday night, then a mix of clouds and sun with a slight (20%) chance of snow showers Monday snow level at the surface Friday through Monday highs 25-32 lows 18-20.

________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

________________

Get your local Eugene-Springfield news on-line at Eugene Daily News.com.

________________

________________

Here is my new weekly weather quiz question. What is the “Pacific Decadal Oscillation?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good Luck!

________________

An upper level trough of low pressure (shaded “U” shape) is sliding eastward through the Pacific Northwest. The next frontal system can be seen moving in with its warm front that already pushed in ahead and the cold front will follow behind it. Yet another frontal system will move in by mid week (position shown is Thursday) to continue the rain chances. Snow levels will fall to about 1,000 ft. Friday night and Saturday, but I don’t expect any snow to stick enough to pile up any accumulation on the valley floor.

________________

Advisories:  NONE AT THIS TIME.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Rain today (0.10 in. of rain possible), rain likely (60%) this evening, a good (50%) chance of rain late tonight (0.10 in. of rain possible), cloudy with a good (50%) chance of rain Tuesday AM, a slight (20%) chance of rain in the afternoon and evening, rain Tuesday night and Wednesday AM, showers in the afternoon and evening and cooler, then rain or snow showers Wednesday night highs 50-54 cooling to 44 Wednesday lows 43-32. Mostly cloudy with a good (50%) chance of rain and snow showers Thursday through Friday, a (40%) chance of rain Friday night (snow level 1,000 ft.), a (40%) chance of showers Saturday (snow level 1,000 ft.), then mostly cloudy with a good (50%) chance of showers Saturday night and Sunday highs 42-40 warming to 45 Sunday lows 29-35. (seasonal averages high 46 low 34)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain today (0.15 in of rain possible), showers this evening, a (40%) chance of showers late tonight (0.10 in. of rain possible), mostly cloudy with a (30%) chance of showers Tuesday, rain late Tuesday night (snow level 3,500 ft. late), rain and snow showers Wednesday AM, rain and snow showers and colder with a slight (20%) chance of thunderstorms in the afternoon (snow level 1,500 ft.), then rain and snow showers likely (70%) and colder Wednesday night with a slight (20%) chance of thunderstorms highs 47-54 cooling to near 44 Wednesday lows 43-32. Mostly cloudy with a (40%) chance of rain and snow showers and a slight (20%) chance of thunderstorms Thursday, a good (50%) chance of rain and snow showers Thursday night and Friday, a (30%) chance of rain and snow showers Friday night and Saturday, then a good (50%) chance of rain and snow showers Saturday night and Sunday highs 40-45 lows 32-36. (seasonal averages high 49 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain today (0.40 in. of rain possible), evening coastal showers likely (60%) while evening showers inland and a good (50%) chance of showers late tonight (0.25 in. of rain possible), mostly cloudy with a (30%) chance of showers Tuesday, rain late Tuesday night and breezy (wind: S 15-25 mph), AM coastal showers with showers and a slight (20%) chance of thunderstorms in the afternoon while AM rain and snow showers inland with showers, snow showers and a slight (20%) chance of thunderstorms Wednesday afternoon (snow level 1,500 ft.), showers and a slight (20%) chance of rain in the evening, then rain and snow showers with a slight (20%) chance of thunderstorms late Wednesday night highs 52-55 cooling to 44 Wednesday lows 47-37. Mostly cloudy with a good (50%) chance of rain and snow showers and a slight (20%) chance of thunderstorms Thursday, then mostly cloudy with  showers likely (60%) Thursday night and Friday, then mostly cloudy with a (40%) chance of showers Friday night and Saturday, then a good (50%) chance of showers Sunday highs 42-49 lows 36-40. (seasonal averages high 51 low 40)

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Forecast for the Cascades of Lane County: Mostly cloudy with rain this afternoon (0.25 in. of rain possible), rain and snow tonight (0.25 in. of rain possible, 1 in. of snow possible), mostly cloudy with a good (50%) chance of rain or snow Tuesday and breezy (wind: SW 15-25 mph gusts to 40 mph), partly cloudy with a slight (20%) chance of evening rain, rain likely (60%) late Tuesday night and breezy (wind: SW 15-25 mph gusts to 40 mph late at night), rain and snow Wednesday AM, snow showers and colder in the afternoon, then mostly cloudy with snow showers Wednesday night snow level 6,000 ft. today, 5,500 ft. tonight, 5,000 ft. Tuesday, 6,500 ft. Tuesday night, 3,500 ft. falling to 2,500 ft. Wednesday, then at the surface Wednesday night highs 36-45 cooling to near 30 Wednesday lows 32-20. Mostly cloudy with a good (50%) of snow showers Thursday through Friday, a (30%) chance of snow Friday night, a good (50%) chance of snow showers Saturday through Sunday snow level at the surface Thursday through Saturday, 2,500 ft. Saturday night, then at the surface Sunday highs 23-28 lows 15-24.

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

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