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Here is my new weekly weather quiz question. Define “Biometeorology?” 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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Advisories:  A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND FOR THE PUDDING RIVER AT AURORA. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A WINTER STORM WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE NORTH CASCADES AND THE CASCADES OF LANE COUNTY. A FLOOD WATCH IS IN EFFECT FROM 5 PM THIS AFTERNOON THROUGH THURSDAY MORNING  FOR THE SOUTH CENTRAL  OREGON COAST, THE SOUTH OREGON COAST, AND CENTRAL DOUGLAS COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE SOUTH CENTRAL AND SOUTH CASCADES OF OREGON AND THE SISKIYOU MOUNTAINS. A WIND ADVISORY IS IN EFFECT UNTIL 11 PM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.

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A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough is producing rain and snow showers with the snow staying mostly in the higher elevations. A frontal system will bring even more rain to us today. The Vernal Equinox arrived at 10:14 PM PDT Monday night ushering in the season of Spring. (The earliest Spring in 116 years.) Another frontal system will be aimed at us Friday bringing even more rain.

_________________

Here are your detailed forecasts.**

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with showers this AM, rain this afternoon (0.50 in. of rain possible), rain tonight (1.00 in. of rain possible) and Wednesday (0.50 in. of rain possible), mostly cloudy with a (40%) chance of showers Thursday AM, showers likely (60%) Thursday afternoon (0.10 in. of rain possible), then mostly cloudy with a good (50%) chance of showers Thursday night (snow level 1,000 ft.) highs near 50 lows 38-32. A mix of clouds and sun with a (30%) chance of showers Friday, a (40%) chance of showers Thursday night, a mix of clouds and sun with a (30%) chance of showers Friday, then mostly cloudy with a (40%) chance of showers Friday night through Monday highs near 52 lows 32-40 cooling to 34 Sunday night. (seasonal averages high 57 low 38)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain today (snow level 3,000 ft. falling to 3,000 ft. this afternoon, 0.25 in. of rain possible), rain (snow level 3,000 ft. this evening, 0.50 in. of rain possible) tonight, Wednesday (0.50 in. of rain possible), and Wednesday night (snow level 3,000 ft. falling to 2,500 ft.late at night, 0.50 in. of rain possible), rain and snow showers likely (60%) Thursday (snow level 1,500 ft. rising to 2,000 ft. in the afternoon, 0.10 in. of rain possible), then mostly cloudy with  a good (50%) chance of rain and snow showers Thursday night highs near 55 lows 46-35. Mostly cloudy with a (40%) chance of rain and snow showers Friday, and a (40%) chance of showers Friday night, then mostly cloudy with a good (50%) chance of showers Saturday through Monday highs 55-59 lows near 38 (seasonal averages high 58 low 40)

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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) and breezy (SW 15-25 mph), rain tonight (1.00 in. of rain possible) and Wednesday (1.00 in. of rain possible), rain (0.80 in. of rain possible) Wednesday night, rain and snow showers likely (60%) Thursday AM, showers likely (60%) in the afternoon (snow level 1,000 ft., 0.15 in. of rain possible), then mostly cloudy with a (40%) chance of showers Thursday night highs near 50 lows 42-34. Mostly cloudy with a good (50%) chance of showers Friday through Monday highs near 50 lows 35-40. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Mostly cloudy with rain, snow (4-8 in. of snow possible, 1.00 in. of rain possible) and windy (wind: SW 20-30 mph gusts to 50 mph) today, rain and snow (5-10 in. of snow possible, 1.00 in. of rain possible) tonight, rain and snow Wednesday (6-10 in. of snow possible), rain and snow likely (60%) Wednesday night, rain and snow showers likely (60%) Thursday, then mostly cloudy with a good (50%) chance of snow showers Thursday night snow level 4,000 ft. today through Wednesday, 3,000 ft. Wednesday night and Thursday, and 2,500 ft. Thursday night highs 38-44 cooling to 35 Thursday lows 30-22.  A mix of clouds and sun with a (40%) chance of rain and snow showers Friday, a good (50%) chance of rain and snow showers Friday night, a (40%) chance of rain and snow showers Saturday, then mostly cloudy with a good (50%) chance of rain and snow showers Saturday night through Monday snow level 3,500 ft. Friday, 4,000 ft. Friday night, 4,500 ft. Saturday, 4,000 ft. Saturday night and Sunday, 3,500 ft. Sunday night, and 4,000 ft. Monday highs 38-42 lows 24-28.

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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. Define “Biometeorology?” 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.

_______________

Advisories:  A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND FOR THE PUDDING RIVER AT AURORA. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A WINTER STORM WARNING IS IN EFFECT FROM 11 PM TONIGHT UNTIL 11 PM TUESDAY FOR THE NORTH CASCADES AND THE CASCADES OF LANE COUNTY. A FLOOD WATCH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY MORNING  FOR THE SOUTH CENTRAL  OREGON COAST, THE SOUTH OREGON COAST, AND CENTRAL DOUGLAS COUNTY. A WIND ADVISORY IS IN EFFECT FROM 2 AM UNTIL 11 PM TUESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.

________________

A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough is producing rain and snow showers with the snow staying in the higher elevations. A frontal system will bring even more rain to us. The Vernal Equinox arrives at 10:14 PM PDT tonight ushering in the season of Spring. (The earliest Spring in 116 years.)

_________________

Here are your detailed forecasts.**

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with rain tonight (0.50 in. of rain possible), showers Tuesday AM, rain Tuesday afternoon (0.50 in. of rain possible), rain Tuesday night (0.50 in. of rain possible) and Wednesday (0.50 in. of rain possible), mostly cloudy with a (40%) chance of showers Thursday AM, showers Thursday afternoon, then mostly cloudy with a good (50%) chance of showers Thursday night lows 38-42 cooling to 34 Thursday night highs 55-50. A mix of clouds and sun with a (30%) chance of showers Friday, a (40%) chance of showers Thursday night, a mix of clouds and sun with a (30%) chance of showers Friday, then mostly cloudy with a (40%) chance of showers Friday night through Monday highs 50-53 lows 32-40. (seasonal averages high 57 low 38)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain tonight (snow level 2,500 ft. this evening, 0.25 in. of rain possible) and breezy (wind: S 10-15 mph gusts to 35 mph increasing to S 15-25 mph late at night, mostly cloudy with rain Tuesday (snow level 3,000 ft. in the afternoon, 0.25 in. of rain possible), rain (0.50 in. of rain possible) Tuesday night, Wednesday (0.50 in. of rain possible), and Wednesday night (snow level 3,500 ft., 0.50 in. of rain possible), rain and snow showers likely (60%) Thursday, then mostly cloudy with  a good (50%) chance of rain and snow showers Thursday night lows 42-33 highs 52-58 cooling to near 50 Thursday. Mostly cloudy with a (40%) chance of rain and snow showers Friday and Friday night, then mostly cloudy with a good (50%) chance of showers Saturday through Monday highs 54-59 lows near 38 (seasonal averages high 58 low 40)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain (0.50 in. of rain possible) and windy (wind: S 15-25 mph increasing to and S 25-35 mph late at the beaches, S 10-15 mph increasing to S 20-30 inland) tonight, rain Tuesday (0.40 in. of rain possible) and breezy (SW 15-25 mph), rain Tuesday night (1.00 in. of rain possible) and Wednesday (1.00 in. of rain possible), rain (0.80 in. of rain possible) Wednesday night, rain and snow showers likely (60%) Thursday AM, showers likely (60%) in the afternoon, then mostly cloudy with a (40%) chance of showers Thursday night lows 42-35 highs 50-46. Mostly cloudy with a good (50%) chance of showers Friday through Monday highs near 50 lows near 40. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Mostly cloudy with rain and snow (5-11 in. of snow possible, 0.75 in. of rain possible) and breezy (wind: S 10-15 mph increasing to S 15-25 mph gusts to 40 mph late) tonight, mostly cloudy with rain, snow (4-8 in. of snow possible, 0.50 in. of rain possible) and breezy (wind: SW 15-25 mph gusts to 40 mph) Tuesday, rain and snow (3-6 in. of snow possible, 0.25 in. of rain possible) Tuesday night, rain and snow Wednesday, rain and snow likely (60%) Wednesday night, rain and snow showers likely (60%) Thursday, then mostly cloudy with a good (50%) chance of snow showers Thursday night snow level 3,500 ft. tonight, 4,000 ft. Tuesday, and Tuesday night, 3,500 ft. Wednesday and Wednesday night then 3,000 ft. Thursday and Thursday night  lows 30-24 highs 38-44 cooling to 38 Thursday.  A mix of clouds and sun with a (40%) chance of rain and snow showers Friday, a good (50%) chance of rain and snow showers Friday night, a (40%) chance of rain and snow showers Saturday, then mostly cloudy with a good (50%) chance of rain and snow showers Saturday night through Monday snow level 3,500 ft. Friday, 4,000 ft. Friday night, 4,500 ft. Saturday, 5,500 ft. Saturday night, 4,500 ft. Sunday, then 4,000 ft. Sunday night and Monday highs 43-32 then warming to near 40 Saturday lows near 26.

________________

**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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_______________

Advisories:  A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND FOR THE PUDDING RIVER AT AURORA. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A WINTER STORM WATCH IS IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT FOR THE NOTRTH OREGON CASCADES AND THE CASCADES OF LANE COUNTY. A FREEZE WARNING IS IN EFFECT UNTIL 8 AM TODAY FOR THE SOUTH CENTRAL  OREGON COAST, THE SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY. A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM TODAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

________________

A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough will help produce rain and snow showers and lower snow levels enough to drop some snow on the tops of the hills that overlook the Willamette Valley. A frontal system will bring even more rain to us early next week.

_________________

Here are your detailed forecasts.**

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with a (40%) chance of rain and snow showers this AM, a good (50%) chance of rain and snow in the afternoon (under 0.10 in. of rain possible), rain tonight (0.25 in. of rain possible), rain Tuesday AM, mostly cloudy with showers Tuesday afternoon, rain Tuesday night and Wednesday, then mostly cloudy with rain likely (60%) Wednesday night highs 35-40 lows 36-40 cooling to 35 Wednesday night. Mostly cloudy with rain likely (60%) Thursday, then mostly cloudy with a good (50%) chance of showers Thursday night through Sunday highs 53-48 lows 34-37. (seasonal averages high 57 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a good (50%) chance of AM snow showers, a (40%) chance of rain and snow in the afternoon (snow level 2,000 ft.),  rain and snow likely (60%) in the evening, rain late tonight (snow level 2,500 ft. rising to 3,000 ft. late tonight, 0.25 in. of rain possible), mostly cloudy with rain Tuesday (0.25 in. of rain possible) and a bit warmer, then showers (0.15 in. of rain possible) likely (60%) Tuesday night, mostly cloudy with rain Wednesday, then rain and snow Wednesday night highs 52-58lows 42-37. Mostly cloudy with rain and snow showers likely (60%) Thursday, a good (50%) chance of rain and snow showers Thursday night and Friday, mostly cloudy with a good (50%) chance of evening showers, a (40%) chance of rain and snow showers late Friday night, then mostly cloudy with a good (50%) chance of showers Saturday through Sunday highs 52-57 lows 35-40 (seasonal averages high 58 low 40)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain and snow showers this AM, rain likely (60%) in the afternoon inland, (snow level 500 ft. rising to 2,000 ft., 0.10 in. of rain possible) rain (0.40 in. of rain possible) and windy (wind: S 25-35 mph at the beaches and S 20-30 mph inland) tonight, AM rain Tuesday, showers in the afternoon (0.30 in. of rain possible), rain Tuesday night (0.60 in. of rain possible) through Wednesday night lows 43-35 highs 48-54. Mostly cloudy with rain and snow showers likely (60%) Thursday AM, showers likely (60%) Thursday afternoon, a good (50%) chance of showers Thursday night through Sunday highs near 50 lows 36-40. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Mostly cloudy with a good (50%) chance of snow showers this AM, snow likely (60%) this afternoon (3-6 in. of snow possible), rain and snow tonight and breezy (wind: SW 5-15 mph increasing to S 15-25 mph gusts to 45 mph late), mostly cloudy with rain, snow, and breezy (wind: SW 15-25 mph gusts to 50 mph) Tuesday, rain and snow Tuesday night and Wednesday, then rain and snow likely (60%) Wednesday night snow level at the surface tonight and Monday, 3,000 ft. Monday night, 4,000 ft. Tuesday, 5,000 ft. Tuesday night, then 3,500 ft. Wednesday and Wednesday night highs 33-44 cooling to 35 Wednesday lows 29-25.  Mostly cloudy with snow likely (60%) Thursday, rain and snow showers likely (60%) at night, mostly cloudy with a good (50%) chance of rain and snow showers Friday through Sunday snow level 3,000 ft. Thursday, 4,000 ft. Thursday night, 3,500 ft. Friday, 4,500 ft. Friday night and Saturday, then 5,500 ft. Saturday night and Sunday highs 43-32 then warming to near 40 Saturday lows near 26.

________________

**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.

________________

_______________

_______________

Advisories:  A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND FOR THE PUDDING RIVER AT AURORA. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY FOR THE SOUTH CENTRAL  OREGON COAST, THE SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY. A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

________________

A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough will help produce rain and snow showers and lower snow levels enough to drop some snow on the tops of the hills that overlook the Willamette Valley. A frontal system will bring even more rain to us early next week.

_________________

Here are your detailed forecasts.**

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with scattered rain and snow showers this evening, isolated  rain and snow showers (0.10 in. of rain possible) late tonight, a (40%) chance of rain and snow showers Monday AM, a good (50%) chance of rain and snow in the afternoon (under 0.10 in. of rain possible), rain Monday night (0.25 in. of rain possible), rain Tuesday AM, mostly cloudy with showers Tuesday afternoon, rain Tuesday night and Wednesday, then mostly cloudy with rain likely (60%) Wednesday night lows 32-40 cooling to 35 Wednesday night highs 35-40. Mostly cloudy with rain likely (60%) Thursday, then mostly cloudy with a good (50%) chance of showers Thursday night through Sunday highs 53-48 lows 34-37. (seasonal averages high 57 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a (30%) chance of rain and snow showers this evening, a slight (20%) chance of snow showers late tonight (under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of AM snow showers, a (40%) chance of rain and snow in the afternoon (snow level 2,000 ft.),  rain and snow likely (60%) in the evening, rain late Monday night (snow level 2,500 ft. rising to 3,000 ft. late Monday night, 0.25 in. of rain possible), mostly cloudy with rain Tuesday (0.25 in. of rain possible) and a bit warmer, then showers (0.15 in. of rain possible) likely (60%) Tuesday night, mostly cloudy with rain Wednesday, then rain and snow Wednesday night lows 32-45 cooling to 36 Wednesday night highs 52-58. Mostly cloudy with rain and snow showers likely (60%) Thursday, a good (50%) chance of rain and snow showers Thursday night and Friday, mostly cloudy with a good (50%) chance of evening showers, a (40%) chance of rain and snow showers late Friday night, then mostly cloudy with a good (50%) chance of showers Saturday through Sunday highs 52-57 lows 35-40 (seasonal averages high 58 low 40)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with a (40%) chance of coastal showers this evening and a good (50%) chance of rain and snow showers late, a (30%) chance of rain and snow showers inland in the evening (snow level 900 ft.falling to 300 ft. late , 0.15 in. of rain possible), rain and snow showers in the AM Monday, rain likely (60%) in the afternoon inland, (snow level 500 ft. rising to 2,000 ft., 0.10 in. of rain possible) rain (0.40 in. of rain possible) and windy (wind: S 25-35 mph at the beaches and S 20-30 mph inland) Monday night, AM rain Tuesday, showers in the afternoon (0.30 in. of rain possible), rain Tuesday night (0.60 in. of rain possible) through Wednesday night lows 34-44 cooling to 36 Wednesday night highs 48-54. Mostly cloudy with rain and snow showers likely (60%) Thursday AM, showers likely (60%) Thursday afternoon, a good (50%) chance of showers Thursday night through Sunday highs near 50 lows 36-40. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Mostly cloudy with scattered snow showers this evening, isolated snow showers late tonight, mostly cloudy with a good (50%) chance of snow showers tonight and Monday AM, a (%) chance of snow Monday afternoon (3-6 in. of snow possible), rain and snow Monday night and breezy (wind: SW 5-15 mph increasing to S 15-25 mph gusts to 45 mph late), mostly cloudy with rain, snow, and breezy (wind: SW 15-25 mph gusts to 50 mph) Tuesday, rain and snow Tuesday night and Wednesday, then rain and snow likely (60%) Wednesday night snow level at the surface tonight and Monday, 3,000 ft. Monday night, 4,000 ft. Tuesday, 5,000 ft. Tuesday night, then 3,500 ft. Wednesday and Wednesday night lows 19-29 cooling to 25 Wednesday night highs 33-44 cooling to 35 Wednesday.  Mostly cloudy with snow likely (60%) Thursday, rain and snow showers likely (60%) at night, mostly cloudy with a good (50%) chance of rain and snow showers Friday through Sunday snow level 3,000 ft. Thursday, 4,000 ft. Thursday night, 3,500 ft. Friday, 4,500 ft. Friday night and Saturday, then 5,500 ft. Saturday night and Sunday highs 43-32 then warming to near 40 Saturday lows near 26.

________________

**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.

________________

_______________

_______________

Advisories:  A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND FOR THE PUDDING RIVER AT AURORA. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY FOR THE SOUTH CENTRAL  OREGON COAST, THE SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY. A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

________________

A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough will help produce rain and snow showers and lower snow levels enough to drop some snow on the tops of the hills that overlook the Willamette Valley. A frontal system will bring even more rain to us early next week.

_________________

Here are your detailed forecasts.**

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with showers likely (60%) today (snow level 1,000 ft., 0.10 in. of rain possible), a (40%) chance of evening showers, a good (50%) chance of rain and snow showers Monday AM, showers likely (60%) in the afternoon (0.15 in. of rain possible), cloudy with a good (50%) chance of evening rain, rain likely (60%) late Monday night (0.50 in. of rain possible), rain Tuesday, then mostly cloudy with rain likely (60%) Tuesday night highs 45-55 lows 32-38. Mostly cloudy with rain Wednesday, showers likely (60%) Wednesday night (snow level 1,000 ft.), rain likely (60%) Thursday, then mostly cloudy with a good (50%) chance of showers Thursday night through Saturday highs 53-48 lows 34-37. (seasonal averages high 57 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers likely (60%) today (snow level 900 ft., 1 in. of snow possible, under 0.10 in. of  rain possible), rain and snow showers likely (60%) this afternoon (snow level 700 ft., 0.10 in. of rain possible), a (30%) chance of rain and snow showers tonight (snow level 500 ft., under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of AM snow, a (40%) chance of rain and snow in the afternoon (snow level 2,000 ft.),  rain and snow likely (60%) in the evening, rain late Monday night (snow level 2,500 ft. rising to 3,000 ft. late Monday night, 0.25 in. of rain possible), mostly cloudy with rain Tuesday and a bit warmer, then rain likely (60%) Tuesday night lows 33-45 highs 64-50. Mostly cloudy with rain Wednesday, rain and snow showers likely (60%) Wednesday night through Thursday night, then mostly cloudy with a good (50%) chance of rain and snow showers Friday highs 58-53 lows near 37. (seasonal averages high 58 low 40)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal rain and snow showers likely (60%) this AM, rain and snow showers likely (60%) this   afternoon inland (snow level 800 ft., 1 in. of snow possible, 0.15 in. of rain possible), a good (50%) chance of coastal  showers this evening, showers likely (60%) late, a (30%) chance of inland rain and snow showers tonight (snow level 700 ft.), a good (50%) chance of coastal rain Monday with rain likely (60%) in the afternoon, a good (50%) chance of AM rain and snow inland, rain and snow likely (60%) Monday afternoon inland (snow level 200 ft. rising to 1,500 ft. in the afternoon), rain Monday night (0.50 in. of rain possible) and breezy, rain Tuesday, then rain likely (60%) Tuesday night highs 46-54 lows 34-44. Mostly cloudy with rain Wednesday, showers likely (60%) Wednesday night, rain and snow showers likely (60%) Thursday AM, showers likely (60%) Thursday afternoon, a good (50%) chance of showers Thursday night through Saturday highs 55-48 lows 36-40. (seasonal averages high 54 low 42).

_________________

Forecast for the Cascades of Lane County: Mostly cloudy with snow showers (1-3 in. of snow possible) likely (60%) today, a good (50%) chance of snow showers tonight and Monday AM, snow showers likely (60%) Monday afternoon and Monday night and breezy (wind: SW 5-15 mph increasing to S 15-25 mph gusts to 45 mph late), mostly cloudy with rain, snow, and breezy Tuesday, then rain and snow likely (60%) Tuesday night snow level at the surface today through Monday, 2,500 ft. Monday night, 4,500 ft. Tuesday, then 5,000 ft. Tuesday night highs 29-43 lows 19-29. Mostly cloudy with rain and snow Wednesday, rain and snow showers likely (60%) Wednesday night, rain and snow likely (60%) Thursday, rain and snow showers likely (60%) at night, mostly cloudy with a good (50%) chance of rain and snow showers Friday through Saturday snow level 4,000 ft. Wednesday, 2,500 ft. Wednesday night, 3,000 ft. Thursday and Thursday night, 2,500 ft. Friday, then 4,500 ft. Friday night and Saturday highs 43-32 then warming to near 40 Saturday lows near 26.

________________

**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.

________________

_______________

_______________

Advisories:  A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND FOR THE PUDDING RIVER AT AURORA. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY FOR THE SOUTH CENTRAL  OREGON COAST, THE SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY. A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

________________

A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough will help produce rain and snow showers and lower snow levels enough to drop some snow on the tops of the hills that overlook the Willamette Valley. A frontal system will bring even more rain to us early next week.

_________________

Here are your detailed forecasts.**

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with showers likely (60%) today (snow level 1,000 ft., 0.10 in. of rain possible), a (40%) chance of evening showers, a good (50%) chance of rain and snow showers Monday AM, showers likely (60%) in the afternoon (0.15 in. of rain possible), cloudy with a good (50%) chance of evening rain, rain likely (60%) late Monday night (0.50 in. of rain possible), rain Tuesday, then mostly cloudy with rain likely (60%) Tuesday night highs 45-55 lows 32-38. Mostly cloudy with rain Wednesday, showers likely (60%) Wednesday night (snow level 1,000 ft.), rain likely (60%) Thursday, then mostly cloudy with a good (50%) chance of showers Thursday night through Saturday highs 53-48 lows 34-37. (seasonal averages high 57 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers likely (60%) today (snow level 900 ft., 1 in. of snow possible, under 0.10 in. of  rain possible), rain and snow showers likely (60%) this afternoon (snow level 700 ft., 0.10 in. of rain possible), a (30%) chance of rain and snow showers tonight (snow level 500 ft., under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of AM snow, a (40%) chance of rain and snow in the afternoon (snow level 2,000 ft.),  rain and snow likely (60%) in the evening, rain late Monday night (snow level 2,500 ft. rising to 3,000 ft. late Monday night, 0.25 in. of rain possible), mostly cloudy with rain Tuesday and a bit warmer, then rain likely (60%) Tuesday night lows 33-45 highs 64-50. Mostly cloudy with rain Wednesday, rain and snow showers likely (60%) Wednesday night through Thursday night, then mostly cloudy with a good (50%) chance of rain and snow showers Friday highs 58-53 lows near 37. (seasonal averages high 58 low 40)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with coastal rain and snow showers likely (60%) this AM, rain and snow showers likely (60%) this   afternoon inland (snow level 800 ft., 1 in. of snow possible, 0.15 in. of rain possible), a good (50%) chance of coastal  showers this evening, showers likely (60%) late, a (30%) chance of inland rain and snow showers tonight (snow level 700 ft.), a good (50%) chance of coastal rain Monday with rain likely (60%) in the afternoon, a good (50%) chance of AM rain and snow inland, rain and snow likely (60%) Monday afternoon inland (snow level 200 ft. rising to 1,500 ft. in the afternoon), rain Monday night (0.50 in. of rain possible) and breezy, rain Tuesday, then rain likely (60%) Tuesday night highs 46-54 lows 34-44. Mostly cloudy with rain Wednesday, showers likely (60%) Wednesday night, rain and snow showers likely (60%) Thursday AM, showers likely (60%) Thursday afternoon, a good (50%) chance of showers Thursday night through Saturday highs 55-48 lows 36-40. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Mostly cloudy with snow showers (1-3 in. of snow possible) likely (60%) today, a good (50%) chance of snow showers tonight and Monday AM, snow showers likely (60%) Monday afternoon and Monday night and breezy (wind: SW 5-15 mph increasing to S 15-25 mph gusts to 45 mph late), mostly cloudy with rain, snow, and breezy Tuesday, then rain and snow likely (60%) Tuesday night snow level at the surface today through Monday, 2,500 ft. Monday night, 4,500 ft. Tuesday, then 5,000 ft. Tuesday night highs 29-43 lows 19-29. Mostly cloudy with rain and snow Wednesday, rain and snow showers likely (60%) Wednesday night, rain and snow likely (60%) Thursday, rain and snow showers likely (60%) at night, mostly cloudy with a good (50%) chance of rain and snow showers Friday through Saturday snow level 4,000 ft. Wednesday, 2,500 ft. Wednesday night, 3,000 ft. Thursday and Thursday night, 2,500 ft. Friday, then 4,500 ft. Friday night and Saturday highs 43-32 then warming to near 40 Saturday lows near 26.

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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.

________________

_______________

Sorry, but no winner this week. Here is my weekly weather quiz question for this week for the last time. The Willamette Valley can see some pretty hot temperatures during the summer months, but the diurnal variation of temperatures is what makes it not as uncomfortable as it can get elsewhere. Explain what “diurnal” means and why does it make us more comfortable? Here is the answer. Diurnal temperature variation is a meteorological term that relates to the variation in temperature that occurs from the highs of the day to the cool of nights. For Western Oregon that translates to a drastic drop off of temperatures after a very warm summer day. The high for the day may exceed 90 degrees, but the nighttime low temperature will usually fall anywhere from 20 to 40 degrees cooler which makes for much more comfortable conditions than would be found in other parts of the country.  I’ll have a new weekly weather quiz question for you starting next Monday.  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.

________________

Advisories:  A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND FOR THE PUDDING RIVER AT AURORA. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A WINTER WEATHER ADVISORY IS IN EFFECT FROM 2AM UNTIL 11 AM SUNDAY ABOVE 1,500 FT. FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND ABOVE 2,000 FT. FOR JACKSON COUNTY.

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A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough will help produce rain and snow showers and lower snow levels enough to drop some snow on the tops of the hills that overlook the Willamette Valley. A frontal system will bring even more rain to us early next week.

_________________

Here are your detailed forecasts.**

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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 showers tonight (under 0.10 in. of rain possible), showers likely (60%) Sunday (snow level 1,000 ft., 0.10 in. of rain possible), a (40%) chance of evening showers, a good (50%) chance of rain and snow showers Monday AM, showers likely (60%) in the afternoon (0.15 in. of rain possible), cloudy with a good (50%) chance of evening rain, rain likely (60%) late Monday night (0.50 in. of rain possible), rain Tuesday, then mostly cloudy with rain likely (60%) Tuesday night lows 33-30 warming to near 38 Tuesday night highs 45-55. Mostly cloudy with rain Wednesday, showers likely (60%) Wednesday night (snow level 1,000 ft.), rain likely (60%) Thursday, then mostly cloudy with a good (50%) chance of showers Thursday night through Saturday highs 53-48 lows 34-37. (seasonal averages high 57 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with scattered rain and snow showers tonight (snow level 2,000 ft. falling to 700 ft. late tonight, under 0.10 in. of rain possible), rain and snow showers likely (60%) Sunday (snow level 900 ft., 1 in. of snow possible, under 0.10 in. of  rain possible), rain and snow showers likely (60%) in the afternoon (snow level 700 ft., 0.10 in. of rain possible), a (30%) chance of rain and snow showers Sunday night (snow level 500 ft., under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of AM snow, a (40%) chance of rain and snow in the afternoon (snow level 2,000 ft.),  rain and snow likely (60%) in the evening, rain late Monday night (snow level 2,500 ft. rising to 3,000 ft. late Monday night, 0.25 in. of rain possible), mostly cloudy with rain Tuesday and a bit warmer, then rain likely (60%) Tuesday night lows 33-45 highs 64-50. Mostly cloudy with rain Wednesday, rain and snow showers likely (60%) Wednesday night through Thursday night, then mostly cloudy with a good (50%) chance of rain and snow showers Friday highs 58-53 lows near 37. (seasonal averages high 58 low 39)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with scattered showers and a slight (20%) chance of isolated thunderstorms at the shore this evening then showers late tonight, scattered inland rain and snow showers this evening, then rain and snow showers late tonight (snow level 1,500 ft. falling to 800 ft. late at night, 1 in. of snow possible, 0.10 in. of rain possible), coastal rain and snow showers likely (60%) Sunday AM, rain and snow showers likely (60%) Sunday afternoon inland (snow level 800 ft., 1 in. of snow possible, 0.15 in. of rain possible), a good (50%) chance of coastal  showers Sunday evening showers likely (60%) late, a (30%) chance of inland rain and snow showers Sunday night (snow level 700 ft.), a good (50%) chance of coastal rain Monday with rain likely (60%) in the afternoon, a good (50%) chance of AM rain and snow inland, rain and snow likely (60%) Monday afternoon inland (snow level 200 ft. rising to 1,500 ft. in the afternoon), rain Monday night (0.50 in. of rain possible) and breezy, rain Tuesday, then rain likely (60%) Tuesday night lows 34-44 highs 46-54. Mostly cloudy with rain Wednesday, showers likely (60%) Wednesday night, rain and snow showers likely (60%) Thursday AM, showers likely (60%) Thursday afternoon, a good (50%) chance of showers Thursday night through Saturday highs 55-48 lows 36-40. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Mostly cloudy with a good (50%) chance of snow showers tonight, snow showers (1-3 in. of snow possible) likely (60%) Sunday, a good (50%) chance of snow showers Sunday night and Monday AM, snow showers likely (60%) Monday afternoon and Monday night and breezy (wind: SW 5-15 mph increasing to S 15-25 mph gusts to 45 mph late), mostly cloudy with rain, snow, and breezy Tuesday, then rain and snow likely (60%) Tuesday night snow level at the surface tonight through Monday, 2,500 ft. Monday night, 4,500 ft. Tuesday, then 5,000 ft. Tuesday night lows 23-18 warming to near 30 Tuesday night highs 29-43. Mostly cloudy with rain and snow Wednesday, rain and snow showers likely (60%) Wednesday night, rain and snow likely (60%) Thursday, rain and snow showers likely (60%) at night, mostly cloudy with a good (50%) chance of rain and snow showers Friday through Saturday snow level 4,000 ft. Wednesday, 2,500 ft. Wednesday night, 3,000 ft. Thursday and Thursday night, 2,500 ft. Friday, then 4,500 ft. Friday night and Saturday highs 43-32 then warming to near 40 Saturday lows near 26.

________________

**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.

________________

_______________

Sorry, but no winner this week. Here is my weekly weather quiz question for this week for the last time. The Willamette Valley can see some pretty hot temperatures during the summer months, but the diurnal variation of temperatures is what makes it not as uncomfortable as it can get elsewhere. Explain what “diurnal” means and why does it make us more comfortable? Here is the answer. Diurnal temperature variation is a meteorological term that relates to the variation in temperature that occurs from the highs of the day to the cool of nights. For Western Oregon that translates to a drastic drop off of temperatures after a very warm summer day. The high for the day may exceed 90 degrees, but the nighttime low temperature will usually fall anywhere from 20 to 40 degrees cooler which makes for much more comfortable conditions than would be found in other parts of the country.  I’ll have a new weekly weather quiz question for you starting next Monday.  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.

________________

Advisories:   A FLOOD WARNING CONTINUES TO BE IN EFFECT FOR THE NEHALEM RIVER NEAR FOSS (WATER IS RECEDING). A FLOOD WARNING IS IN EFFECT FOR THE PUDDING RIVER AT AURORA THROUGH MONDAY AFTERNOON. A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND THE SOUTH FORK OF THE COQUILLE RIVER AT MYRTLE POINT. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR THE COAST RANGE OF NORTHWEST OREGON, NORTH OREGON CASCADES, AND THE CASCADES IN LANE COUNTY.  A WIND ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE CENTRAL AND SOUTHERN WILLAMETTE VALLEY. A FLOOD WATCH IS IN EFFECT  UNTIL THIS MORNING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY. A HIGH WIND WARNING IS IN EFFECT UNTIL 2 AM TODAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY ABOVE 1,000 FT. FOR THE SOUTH OREGON COAST, AND ABOVE 2,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.

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A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough is sending a fetch of moisture with it. One frontal system moved its way through the Pacific Northwest as the next one pushes in lowering snow levels. More storm systems will give us rainy weather for next week too.

_________________

Here are your detailed forecasts.**

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with showers (0.25 in. of rain possible) today, a good (50%) chance of showers tonight (snow level 1,000 ft., under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of showers Sunday (snow level 1,000 ft.) and Sunday night, with a good  (50%) chance of rain and snow showers Monday, then rain likely (60%) Monday night  highs 45-50 lows 33-30 warming to near 35 Monday night. Mostly cloudy with rain Tuesday, cloudy with a good (50%) chance of showers Tuesday night, rain likely (60%) Wednesday, showers likely (60%) Wednesday night and Thursday, then mostly cloudy with a good (50%) chance of showers Thursday night, then a (40%) chance of showers Friday highs 53-49 lows 37-33 warming to 36 Thursday night. (seasonal averages high 57 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers this AM, rain and snow showers likely (60%) in the afternoon (snow level 800 ft. rising to 1,500 ft. in the afternoon, 1-2 in. of snow possible above 1,500 ft. and 1 in. of snow lowers elevations, 0.15 in. of rain possible), a (40%) chance of rain and snow showers tonight (snow level 1,500 ft. falling to 300 ft. late at night, under 0.10 in. of rain possible), a good (50%) chance of rain and snow showers Sunday AM, rain and snow showers likely (60%) in the afternoon (snow level 700 ft., 0.10 in. of rain possible), a (30%) chance of rain and snow showers Sunday night (snow level 900 ft., under 0.10 in. of rain possible), rain and snow showers likely (60%) Monday, rain and snow in the evening, then rain late Monday night highs 64-50 lows 33-40. Mostly cloudy with rain Tuesday and a bit warmer, cloudy with a good (50%) chance of rain Tuesday night, rain likely (60%) Wednesday, rain and snow showers likely (60%) Wednesday night through Thursday night, then mostly cloudy with a good (50%) chance of rain and snow showers Friday highs 48-56 lows 36-40. (seasonal averages high 58 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with showers and a slight (20%) chance of thunderstorms at the shore today, AM inland rain and snow showers then rain and snow showers likely (60%) in the afternoon (snow level 800 ft. rising to 1,500 ft., 1 in. of snow possible, 0.30 in. of rain possible), and breezy (wind: SW 15-25 mph gusts to 40 mph, shifting S 10-15 mph late), mostly cloudy with a good (50%) chance of coastal showers and a slight (20%) chance of thunderstorms with a (30%) chance of showers and a slight (20%) chance of thunderstorms inland tonight (snow level 1,500 ft. falling to 1,000 ft. late at night, 0.10 in. of rain possible), a good (50%) chance of rain and snow showers Sunday AM, rain and snow showers likely (60%) Sunday afternoon inland (snow level 700 ft., 0.15 in. of rain possible), coastal  showers likely (60%) Sunday evening, inland rain and snow showers likely (60%) Sunday evening then a (%) chance of rain and snow showers late Sunday night, rain and snow showers likely (60%) Monday, then rain likely (60%) Monday night highs 47-45 lows 34-42. Mostly cloudy with rain Tuesday, cloudy with rain likely (60%) Tuesday night, rain Wednesday, then mostly cloudy with showers likely (60%) Wednesday night, rain and snow showers likely (60%) Thursday AM, showers likely (60%) Thursday afternoon and Thursday night, then mostly cloudy with a good (50%) chance of showers Friday highs 55-48 lows 40-35. (seasonal averages high 54 low 42).

_________________

Forecast for the Cascades of Lane County: Mostly cloudy with snow showers (1-4 in. of snow possible) and breezy (wind: SW 15-25 mph gusts to 40 mph switching W 10-25 mph in the afternoon) today, a good (50%) chance of snow showers tonight, snow showers likely (60%) Sunday, a good (50%) chance of snow showers Sunday night, snow showers likely (60%) Monday, then rain or snow likely (60%) Monday night snow level at the surface today through Monday, then 2,500 ft. Monday night highs 32-27 warming to near 32 Monday lows 23-18 warming to 24 Monday night. Mostly cloudy with rain or snow Tuesday, cloudy with a good (50%) chance of showers Tuesday night, rain and snow likely (60%) Wednesday, rain and snow showers likely (60%) Wednesday night through Thursday night, then mostly cloudy with a good (50%) chance of rain and snow showers Friday snow level 4,500 ft. Tuesday, 5,500 ft. Tuesday night, 5,000 ft. Wednesday and Wednesday night, 3,000 ft. Thursday, then 3,500 ft. Thursday night and Friday highs 39-42 cooling to near 33 Thursday then warming to near 40 Friday lows 27-24.

________________

**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 for this week. This is your last chance to win this week. Give it a try. The Willamette Valley can see some pretty hot temperatures during the summer months, but the diurnal variation of temperatures is what makes it not as uncomfortable as it can get elsewhere. Explain what “diurnal” means and why does it make us more comfortable?  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.

________________

Advisories:   A FLOOD WARNING CONTINUES TO BE IN EFFECT FOR THE NEHALEM RIVER NEAR FOSS (WATER IS RECEDING). A FLOOD WARNING IS IN EFFECT FOR THE PUDDING RIVER AT AURORA FROM LATE TONIGHT THROUGH MONDAY AFTERNOON. A FLOOD WARNING REMAINS IN EFFECT FOR THE COQUILLE RIVER AT COQUILLE AND THE SOUTH FORK OF THE COQUILLE RIVER AT MYRTLE POINT. FOR FLOOD UPDATES SEE THE NATIONAL WEATHER SERVICE RIVER WARNINGS.

A WINTER WEATHER ADVISORY IS IN EFFECT FROM 11 PM TONIGHT UNTIL 9 AM SATURDAY FOR THE COAST RANGE OF NORTHWEST OREGON, NORTH OREGON CASCADES, AND THE CASCADES IN LANE COUNTY.  A WIND ADVISORY IS IN EFFECT FROM 1 AM UNTIL 10 AM SATURDAY FOR THE CENTRAL AND SOUTHERN WILLAMETTE VALLEY. A FLOOD WATCH IS IN EFFECT  UNTIL SATURDAY MORNING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY. A HIGH WIND WARNING IS IN EFFECT FROM 6 PM THIS EVENING UNTIL 2 AM SATURDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 11 PM THIS EVENING UNTIL 11 AM SATURDAY ABOVE 1,000 FT. FOR THE SOUTH OREGON COAST, AND ABOVE 2,000 FT. FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.

________________

A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough is sending a fetch of moisture with it. One frontal system moved its way through the Pacific Northwest as the next one approaches northern California and pushes in tonight lowering snow levels. More storm systems will give us rainy weather for next week too.

_________________

Here are your detailed forecasts.**

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Mostly cloudy with rain likely (60%) this evening, showers (0.25 in. of rain possible) late tonight and windy (wind: E 10-15 mph increasing to S 20-30 mph gusts to 45 mph late tonight), showers (0.25 in. of rain possible) and breezy (wind: S 20-25 mph gusts to 45 mph early AM, shifting SW 10-15 mph in the afternoon) Saturday, a good (50%) chance of showers Saturday night (snow level 1,000 ft., under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of showers Sunday (snow level 1,000 ft.) and Sunday night, with a good  (50%) chance of rain and snow showers Monday, then rain likely (60%) Monday night lows 36-30 warming to near 35 Monday night highs 45-50. Mostly cloudy with rain Tuesday, cloudy with a good (50%) chance of showers Tuesday night, rain likely (60%) Wednesday, showers likely (60%) Wednesday night and Thursday, then mostly cloudy with a good (50%) chance of showers Thursday night, then a (40%) chance of showers Friday highs 53-49 lows 37-33 warming to 36 Thursday night. (seasonal averages high 56 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with  rain this evening, rain and snow late tonight (snow level 2,500 ft. falling to 1,000 ft. late, 1-2 in. of snow possible, 0.25 in. of rain possible), mostly cloudy with rain and snow showers Saturday AM, rain and snow showers likely (60%) in the afternoon (snow level 800 ft. rising to 1,500 ft. in the afternoon, 1-2 in. of snow possible above 1,500 ft. and 1 in. of snow lowers elevations, 0.15 in. of rain possible), a (40%) chance of rain and snow showers Saturday night (snow level 1,500 ft. falling to 300 ft. late at night, under 0.10 in. of rain possible), a good (50%) chance of rain and snow showers Sunday AM, rain and snow showers likely (60%) in the afternoon (snow level 700 ft., 0.10 in. of rain possible), a (30%) chance of rain and snow showers Sunday night (snow level 900 ft., under 0.10 in. of rain possible), rain and snow showers likely (60%) Monday, rain and snow in the evening, then rain late Monday night lows 38-32 warming to near 40 Monday night highs 64-50. Mostly cloudy with rain Tuesday and a bit warmer, cloudy with a good (50%) chance of rain Tuesday night, rain likely (60%) Wednesday, rain and snow showers likely (60%) Wednesday night through Thursday night, then mostly cloudy with a good (50%) chance of rain and snow showers Friday highs 48-56 lows 36-40. (seasonal averages high 58 low 39)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain and isolated thunderstorms at the shore, with evening rain then rain and snow late tonight inland (snow level 1,000 ft. late tonight, 0.40 in. of rain possible) and windy (wind: SE 15-20 mph shifting S 20-30 mph late evening, then SW 10-20 mph late tonight), mostly cloudy with showers and a slight (20%) chance of thunderstorms at the shore Saturday, AM inland rain and snow showers then rain and snow showers likely (60%) in the afternoon (snow level 800 ft. rising to 1,500 ft., 1 in. of snow possible, 0.30 in. of rain possible), and breezy (wind: SW 15-25 mph gusts to 40 mph, shifting S 10-15 mph late), mostly cloudy with coastal showers and a slight (20%) chance of  thunderstorms Saturday, AM rain and snow showers likely (60%) inland with a slight (20%) chance of afternoon thunderstorms (snow level 600 ft. rising to 1,500 ft. in the afternoon, 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of coastal showers and a slight (20%) chance of thunderstorms with a (30%) chance of showers and a slight (20%) chance of thunderstorms inland Saturday night (snow level 1,500 ft. falling to 1,000 ft. late at night, 0.10 in. of rain possible), a good (50%) chance of rain and snow showers Sunday AM, rain and snow showers likely (60%) Sunday afternoon inland (snow level 700 ft., 0.15 in. of rain possible), coastal  showers likely (60%) Sunday evening, inland rain and snow showers likely (60%) Sunday evening then a (%) chance of rain and snow showers late Sunday night, rain and snow showers likely (60%) Monday, then rain likely (60%) Monday night lows 40-34 warming to 42 Monday night highs 47-45. Mostly cloudy with rain Tuesday, cloudy with rain likely (60%) Tuesday night, rain Wednesday, then mostly cloudy with showers likely (60%) Wednesday night, rain and snow showers likely (60%) Thursday AM, showers likely (60%) Thursday afternoon and Thursday night, then mostly cloudy with a good (50%) chance of showers Friday highs 55-48 lows 40-35. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Mostly cloudy with snow this evening, snow showers (1-4 in. of snow possible) late tonight and windy (wind: SE 5-15 mph increasing S 20-30 mph gusts to 45 mph late), snow showers (1-4 in. of snow possible) and windy (wind: SW 20-30 mph gusts to 45 mph switching W 10-20 mph in the afternoon) Saturday, a good (50%) chance of snow showers Saturday night, snow showers likely (60%) Sunday, a good (50%) chance of snow showers Sunday night, snow showers likely (60%) Monday, then snow likely (60%) Monday night snow level 2,500 ft. tonight, at the surface Saturday through Monday, then 2,500 ft. Monday night lows 23-18 warming to 24 Monday night highs 32-27 warming to near 32 Monday. Mostly cloudy with rain and snow Tuesday, cloudy with a good (50%) chance of showers Tuesday night, rain and snow likely (60%) Wednesday, rain and snow showers likely (60%) Wednesday night through Thursday night, then mostly cloudy with a good (50%) chance of rain and snow showers Friday snow level 4,500 ft. Tuesday, 5,500 ft. Tuesday night, 5,000 ft. Wednesday and Wednesday night, 3,000 ft. Thursday, then 3,500 ft. Thursday night and Friday highs 39-42 cooling to near 33 Thursday then warming to near 40 Friday lows 27-24.

________________

**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 for this week. Today is your last chance to win this week. Give it a try. The Willamette Valley can see some pretty hot temperatures during the summer months, but the diurnal variation of temperatures is what makes it not as uncomfortable as it can get elsewhere. Explain what “diurnal” means and why does it make us more comfortable? 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.

________________

Advisories:   A FLOOD WARNING IS IN EFFECT FOR THE MARYS RIVER IN PHILOMATH UNTIL SATURDAY MORNING, FOR THE SILETZ RIVER AT SILETZ,  AND THE WILSON RIVER NEAR TILLAMOOK. A FLOOD WARNING IS IN EFFECT UNTIL SUNDAY AFTERNOON FOR THE COQUILLE RIVER AT COQUILLE AND THE SOUTH FORK OF THE COQUILLE RIVER AT MYRTLE POINT. FOR FLOOD UPDATES SEE THE FOLLOWING WEATHER SERVICE LINC.

A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM TODAY FOR THE NORTH OREGON CASCADES, AND THE CASCADES IN LANE COUNTY.  A FLOOD WATCH IS IN EFFECT FROM THIS MORNING UNTIL SATURDAY MORNING FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY. A HIGH WIND WARNING IS IN EFFECT UNTIL 5 AM TODAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

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A trough of low pressure (“U” shape on the jet stream) is sliding southward and eastward and lengthening.  That trough is sending a fetch of moisture with it.  A frontal system moved its way into the Pacific Northwest with the warm front first then the cold front behind it bringing  wind and rain to the coast and just rain for the rest of us. Another storm will move in Saturday making sure the weekend is wet too. Looking into next week  More frontal systems will give us rainy weather for next week too.

_________________

Here are your detailed forecasts.**

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with showers (0.13 in. of rain possible) today, rain in the evening, showers (0.25 in. of rain possible) late tonight and Saturday (0.20 in. of rain possible), cloudy with a good (50%) chance of showers Saturday night, then cloudy with a good (50%) chance of showers Sunday and Sunday night (snow level 1,000 ft.) highs 50-45 lows 36-30. Mostly cloudy with a good (50%) chance of showers Monday (snow level 1,000 ft), a good (50%) chance of rain Monday night, rain likely (60% ) Tuesday through Wednesday, then showers likely (60%) Wednesday night and Thursday highs 49-53 cooling to 47 Thursday lows 36-40. (seasonal averages high 56 low 37)

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow this AM, rain (snow level 2,500 ft. in the afternoon, 0.25 in. of rain possible) in the afternoon, rain and snow in the evening, rain and snow showers late tonight (snow level 2,500 ft. falling to 1,500 ft. late, 0.25 in. of rain possible), mostly cloudy with rain and snow showers Saturday (snow level 600 ft. rising to 1,500 ft. in the afternoon, 0.10 in. of rain possible), rain and snow showers likely (60%) in the evening, a good (50%) chance of rain and snow showers late Saturday night (snow level 1,500 ft. falling to 700 ft. late at night, under 0.10 in. of rain possible), rain and snow showers likely (60%) Sunday, then mostly cloudy with a good (50%) chance of rain and snow showers Sunday night highs 54-48 lows 38-33. Mostly cloudy with rain and snow showers likely (60%) Monday and Monday evening, rain likely (60%) late Monday night, rain Tuesday, rain likely (60%) Tuesday night and Wednesday, showers likely (60%) Wednesday night, then mostly cloudy with rain and snow showers likely (60%) Thursday highs 48-56 lows 36-40. (seasonal averages high 58 low 39)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with rain (0.30 in. of rain possible) today and this evening, showers and a slight (20%) chance of thunderstorms at the shore late at night and inland rain and snow showers late (snow level 1,500 ft., 0.30 in. of rain possible) late tonight and breezy (wind: SW 15-25 mph gusts to 40 mph, shifting S 10-15 mph late), mostly cloudy with coastal showers and a slight (20%) chance of  thunderstorms Saturday, AM rain and snow showers likely (60%) inland with a slight (20%),  chance of afternoon thunderstorms (snow level 600 ft. rising to 1,500 ft. in the afternoon, 0.25 in. of rain possible), mostly cloudy with evening coastal showers likely (60%) and a slight (20%) chance of thunderstorms and a chance of showers and a slight (20%) chance of thunderstorms late Saturday night, rain and snow showers likely (60%) inland in the evening then a good (50%) chance of rain and snow showers with a slight (20%) chance of thunderstorms late Saturday night (snow level 1,500 ft. falling to 1,000 ft. late at night, 0.10 in. of rain possible), rain and snow showers and a slight (20%) chance of thunderstorms Sunday AM, showers likely (60%) Sunday afternoon, then rain and snow showers likely (60%) Sunday night highs 50-46 lows 39-34.  Mostly cloudy with rain and snow showers likely (60%) Monday, rain likely (60%) Monday night, rain Tuesday, rain likely (60%) Tuesday night and Wednesday, then mostly cloudy with showers likely (60%) Wednesday night and Thursday highs 48-55 falling to 45 Thursday lows 38-45 cooling to 45 Thursday. (seasonal averages high 54 low 42).

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Forecast for the Cascades of Lane County: Cloudy with snow showers this AM, rain or snow showers (2-4 in. of snow possible, 0.75 in. of rain possible) in the afternoon, evening rain or snow, rain or snow showers (2-5 in. of snow possible, 0.25 in. of rain possible) late tonight, mostly cloudy with snow showers Saturday, snow showers likely (60%) Saturday night, mostly cloudy with snow showers likely (60%) Sunday, then a good (50%) chance of snow showers Sunday night snow level 2,500 ft. today, 3,000 ft. tonight, then at the surface Saturday through Sunday night highs 35-26 lows 23-18. Mostly cloudy with snow showers likely (60%) Monday, a good (50%) chance of snow Monday night, rain and snow likely (60%) Tuesday through Wednesday, then rain and snow showers likely (60%) Wednesday night and Thursday snow level at the surface Monday and Monday night, 4,000 ft. Tuesday, 4,500 ft. Tuesday night and Wednesday, 5,000 ft.Wednesday night, then 4,000 ft. Thursday highs 30-42 cooling to near 35 Thursday lows 22-30.

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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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