Here is my weekly weather quiz question. What is “the chromosphere?” 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 Omega Blocking high pressure ridge (Shaded “Arch” shaped like the Greek letter Omega with blue arrows) is settling over the Pacific Northwest. Cold Canadian air has dried us out and given us the coldest temperatures of the season so far, particularly at night. Remember to be careful in the mountains due to the new snowfall and potentially icy driving conditions.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 18 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A HARD FREEZE WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 9 AM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY,  AND JACKSON COUNTY.
• A HARD FREEZE WARNING IS IN EFFECT FROM 10 PM THURSDAY UNTIL 9 AM FRIDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
• A FROST ADVISORY IS IN EFFECT FROM 10 PM THURSDAY UNTIL 9 AM FRDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear and cold with patchy freezing fog late tonight,
• Patchy AM freezing fog, sunny Thursday (Thanksgiving Day), clear and cold Thursday night,
• Sunny Friday and Saturday, clear and cold at night,
• lows 22-26 highs near 42.
• Sunny Sunday, mostly clear at night,
• Partly cloudy Monday, mostly cloudy with a (30%) chance of rain Monday night,
• Mostly cloudy with a (40%) chance of rain Tuesday, then mostly cloudy with a good (50%) of rain Tuesday night and Wednesday.
• highs 42-47 lows 28-37. (seasonal averages high 49 low 36)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Sunny and cool, 35 warming 42 by the end of the game, wind NE 5-10 mph gusts to 20 mph. You should bundle up that’s pretty chilly.

___________________

Forecast for Roseburg:

• Mostly clear and colder with patchy freezing fog late tonight,
• Patchy AM freezing fog, sunny Thursday afternoon (Thanksgiving Day), clear with patchy freezing fog late at night and Friday AM, sunny in the afternoon, clear Friday night,
• Sunny Saturday, then clear at night.
• lows 24-27 highs near 42.
• Sunny Sunday, partly cloudy Sunday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Monday,then mostly cloudy with a (40%) chance of rain Monday night through Wednesday.
• highs 42-50 lows 28-37. (seasonal averages high 50 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly clear and cold tonight,
• Sunny and a bit warmer Thursday (Thanksgiving Day), Friday and Saturday, clear each night.
• lows 29-34 highs 46-52.
• Sunny Sunday, partly cloudy Sunday night,
• Mostly cloudy with a slight (20%) chance of rain Monday, then mostly cloudy with a (40%) chance of rain Monday night through Wednesday.
• highs 50-54 lows 36-44. (seasonal averages high 53 low 41).

________________

Forecast for the Cascades in Lane County:

• Partly cloudy and very cold tonight,
• Sunny Thursday (Thanksgiving Day) and Friday, clear and cold both nights,
• Mostly sunny Saturday, mostly clear and cold at night.
• free air freezing level at the surface tonight through Thursday night, 3,500 ft. Friday, at the surface Friday night, at the surface Saturday, then 4,500 ft. Saturday night.
• lows 10-14 cooling to 12 Friday night highs 28-30 cooling back to 28 Saturday night.
• Mostly sunny and a bit warmer Sunday, partly cloudy Sunday night,
• Partly cloudy Monday, mostly cloudy with a (30%) chance of rain and snow at night,
• Then mostly cloudy and a bit warmer with a (40%) chance of rain and snow Tuesday, then mostly cloudy with a good (50%) chance of rain and snow Tuesday night and Wednesday.
• free air freezing level 4,000 ft. Sunday and Sunday night, 6,000 ft. Monday, snow level 5,500 ft. Monday night, 6,000 ft. Tuesday, 5,500 ft. Tuesday night, then 6,000 ft. Wednesday.
• highs 32-38 lows 17-30.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question. What is “the chromosphere?” 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 Omega Blocking high pressure ridge (Shaded “Arch” shaped like the Greek letter Omega with blue arrows) is settling over the Pacific Northwest. Cold Canadian air has dried us out and given us the coldest temperatures of the season so far, particularly at night.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 31 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 22 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 37 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A HARD FREEZE WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 9 AM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY,  AND JACKSON COUNTY.
• A FROST ADVISORY IS IN EFFECT FROM 10 PM TONIGHT  UNTIL 9 AM THURSDAY FOR THE CURRY COUNTY COAST.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly sunny and a bit cooler this afternoon, clear and cold tonight,
• Sunny Thursday (Thanksgiving Day) and Friday, clear both nights.
• highs near 42 lows 20-23.
• Sunny Saturday and Sunday, mostly clear each night,
• Partly cloudy Monday, clouds increasing to mostly cloudy with a (30%) chance of rain Monday night,
• Then mostly cloudy with a (40%) chance of rain Tuesday.
• highs 42-45 lows 26-30. (seasonal averages high 49 low 36)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Sunny and cool, 35 warming 42 by the end of the game, wind NE 5 mph. You should bundle up that’s pretty chilly.

___________________

Forecast for Roseburg:

• Sunny this afternoon, mostly clear and colder with patchy freezing fog late tonight,
• Patchy AM freezing fog, sunny Thursday (Thanksgiving Day) and Friday, clear with patchy freezing fog both nights.
• highs near 42 lows 24-27.
• Mostly sunny Saturday and Sunday, mostly clear Saturday night, partly cloudy Sunday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Monday (40%) chance of rain at night,
• Then mostly cloudy and a bit warmer with rain likely (70%) Tuesday.
• highs 42-50 lows 28-37. (seasonal averages high 50 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Sunny this afternoon, clear and cold tonight,
• Sunny and a bit warmer Thursday (Thanksgiving Day) and Friday, clear Thursday night and Friday night.
• highs 46-52 lows 29-34.
• Sunny Saturday, mostly clear at night,
• Mostly sunny Sunday, partly cloudy Sunday night,
• Then mostly cloudy with a slight (20%) chance of rain Monday, a (40%) chance of rain at night,
• Then mostly cloudy with rain likely (60%) Tuesday.
• highs 50-54 lows 36-44. (seasonal averages high 53 low 41).

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with a slight (20%) chance of snow showers today, becoming partly cloudy late this afternoon, mostly clear and very cold tonight,
• Sunny Thursday (Thanksgiving Day) and Friday, clear both nights.
• free air freezing level at the surface this afternoon through Thursday night, 3,500 ft. Friday, then at the surface Friday night.
• highs 26-30 lows 10-14 cooling to 12 Friday night.
• Mostly sunny Saturday and Sunday, mostly clear Saturday night, partly cloudy Sunday night,
• Partly cloudy Monday, more clouds to mostly cloudy with a (30%) chance of rain and snow at night,
• Then mostly cloudy and a bit warmer with a (40%) chance of rain and snow Tuesday.
• free air freezing level at the surface Saturday, 3,500 ft. Saturday night, at the surface Sunday, 4,500 ft. Sunday night, 5,500 ft. Monday, snow level 5,500 ft. Monday night, then 6,000 ft. Tuesday.
• highs 28-37 lows 16-22.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question. What is “the chromosphere?” 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 low (Shaded “U” shape with blue arrows) is moving eastward with cold high pressure (Shaded “Arch” shape) moving in to settle over the Pacific Northwest. A frontal system has been pushed down at us from the northwest. Behind that front is cold Canadian air that will dry us out and give us the coldest temperatures of the season so far, particularly at night.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 24 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A HARD FREEZE WARNING IS IN EFFECT FROM 10 PM WEDNESDAY UNTIL 9 AM THURSDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY,  AND JACKSON COUNTY.
• A FROST ADVISORY IS IN EFFECT FROM 10 PM WEDNESDAY  UNTIL 9 AM THURSDAY FOR THE CURRY COUNTY COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY  FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 4 AM WEDNESDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JEFFERSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with a good (50%) chance of evening showers, a slight (20%) chance of showers late tonight with patchy freezing fog late (under 0.10 in. of rain possible),
• Partly cloudy with patchy AM freezing fog, partly cloudy and a bit cooler Wednesday afternoon, clear and cold Wednesday night,
• Sunny Thursday (Thanksgiving Day) and Friday, clear both nights.
• lows 29-23 highs near 42.
• Sunny Saturday and Sunday, mostly clear each night,
• Partly cloudy Monday, clouds increasing to mostly cloudy with a (30%) chance of rain Monday night,
• Then mostly cloudy with a (40%) chance of rain Tuesday.
• highs 42-45 lows 26-30. (seasonal averages high 49 low 36)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Sunny and cool, 35 warming 42 by the end of the game, wind NE 5 mph. You should bundle up that’s pretty chilly.

___________________

Forecast for Roseburg:

• Cloudy with rain and snow showers likely (60%) this evening, a good (50%) chance of rain and snow showers and colder late tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 1,500 ft.),
• Mostly cloudy Wednesday AM, just mostly sunny in the afternoon, mostly clear and colder late Wednesday night,
• Sunny Thursday (Thanksgiving Day) and Friday, clear Thursday night, mostly clear Friday night.
• lows 34-24 warming to 27 Friday night highs 40-43.
• Mostly sunny Saturday and Sunday, mostly clear Saturday night, partly cloudy Sunday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of rain Monday (40%) chance of rain at night,
• Then mostly cloudy and a bit warmer with rain likely (70%) Tuesday.
• highs 42-49 lows 28-37. (seasonal averages high 50 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with a (40%) chance of showers tonight (under 0.10 in. of rain possible),
• Partly cloudy Wednesday AM, sunny in the afternoon, clear at night,
• Sunny and a bit warmer Thursday (Thanksgiving Day) and Friday, clear Thursday night and Friday night.
• lows 36-29 warming to 34 Friday night highs 46-49
• Sunny Friday and Saturday, clear each night,
• Mostly sunny Sunday, partly cloudy Sunday night,
• Then mostly cloudy with a slight (20%) chance of rain Monday.
• highs 50-53 lows 36-44. (seasonal averages high 53 low 41).

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with occasional light snow decreasing late tonight (2 in. of snow possible),
• Mostly cloudy with occasional snow flurries Wednesday AM, partly cloudy in the afternoon, mostly clear and very cold at night,
• Sunny Thursday (Thanksgiving Day) and Friday, clear Thursday night, mostly clear Friday night.
• snow level sat the surface tonight and Wednesday, then free air freezing level at the surface Wednesday night through Friday night.
• lows 15-10 warming to 12 Friday night highs 24-30.
• Mostly sunny Saturday and Sunday, mostly clear Saturday night, partly cloudy Sunday night,
• Partly cloudy Monday, more clouds to mostly cloudy with a (30%) chance of rain at night,
• Then mostly cloudy with a (40%) chance of rain Tuesday.
• free air freezing level at the surface Saturday, 3,500 ft. Saturday night, at the surface Sunday, 4,500 ft. Sunday night, 5,500 ft. Monday and Monday night, then 6,000 ft. Tuesday.
• highs 28-37 lows 16-22.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my new weekly weather quiz question. What is “the chromosphere?” 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 low (Shaded “U” shape with blue arrows) is moving eastward with cold high pressure (Shaded “Arch” shape) moving in to settle over the Pacific Northwest. A frontal system has been pushed down at us from the northwest. Behind that front is cold Canadian air that will give us the coldest temperatures of the season so far.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 37 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 24 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 41 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A WINTER STORM WARNING IS IN EFFECT FROM 10 AM TODAY UNTIL 10 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM WEDNESDAY  FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 10 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TODAY UNTIL 4 AM WEDNESDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JEFFERSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers and cooler this afternoon (0.10 in. of rain possible), a good (50%) chance of evening showers (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of showers late tonight (snow level 1,500 ft.),
• AM clouds, mostly sunny and a bit cooler Wednesday afternoon, clear and cold Wednesday night,
• Sunny Thursday (Thanksgiving Day), then clear at night.
• highs 45-42 lows 27-22.
• Sunny Friday, Saturday, and Sunday, mostly clear each night,
• Then more clouds to partly cloudy Monday.
• highs 40-43 lows 23-29. (seasonal averages high 50 low 36)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Preliminary forecast: Sunny and cool, 35 warming 40 by the end of the game. You should bundle up that’s pretty chilly.

___________________

Forecast for Roseburg:

• Mostly cloudy with AM rain, rain and snow showers likely (60%) with a slight (20%) chance of thunderstorms and colder this afternoon (0.25 in. of rain possible, 1-2 in. of snow possible, snow level 2,000 ft.), evening rain and snow showers likely (70%), a good (50%) chance of rain and snow showers and colder late tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 1,500 ft.),
• Mostly cloudy with a slight (20%) chance of rain and snow showers Wednesday AM, just mostly cloudy in the afternoon, partly cloudy in the evening, becoming mostly clear and colder late Wednesday night,
• Sunny Thursday (Thanksgiving Day), then clear at night
• highs 45-40 warming to 43 Thursday lows 34-25.
• Sunny Friday, mostly clear at night,
• Mostly sunny Saturday and Sunday, mostly clear Saturday night, partly cloudy Sunday night,
• Then mostly cloudy with a slight (20%) chance of rain Monday.
• highs 42-46 lows 27-33. (seasonal averages high 51 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Coastal showers likely (70%) with a slight chance of thunderstorms today while AM inland showers likely (70%) and inland showers likely (70%) with a slight (20%) chance of thunderstorms this afternoon (0.35 in. of rain possible, snow level 2,000 ft. late), a good (50%) chance of showers tonight (under 0.10 in. of rain possible),
• Partly cloudy Wednesday AM, sunny in the afternoon, mostly clear at night,
• Sunny and a bit warmer Thursday (Thanksgiving Day), then clear Thursday night.
• highs 48-45 warming to 48 Thursday night lows 36-32 warming to 38 Thursday night.
• Sunny Friday and Saturday, clear each night,
• Mostly sunny Sunday, partly cloudy Sunday night,
• Then mostly cloudy with a slight (20%) chance of rain Monday.
• highs 49-53 cooling to 47 Sunday night lows 38-41. (seasonal averages high 53 low 42).

________________

Forecast for the Cascades in Lane County:

• Mostly cloudy with snow showers and much colder today (2-5 in. of snow possible), cloudy with snow showers decreasing late tonight (1-3 in. of snow possible),
• AM clouds with a slight (20%) chance of snow showers, a mix of clouds and sun and a bit cooler Wednesday afternoon, mostly clear and very cold at night,
• Sunny Thursday (Thanksgiving Day), then clear at night.
• snow level 2,000 ft. today, 1,500 ft. tonight and Wednesday, then free air freezing level at the surface Wednesday night through Thursday night.
• highs 26-24 warming back to 26 Thursday lows 15-10 warming to 14 Thursday night.
• Sunny and a bit warmer Friday, mostly clear at night,
• Then mostly sunny Saturday, Sunday, and Monday, mostly clear Saturday night, partly cloudy Sunday night.
• free air freezing level at the surface Saturday, 4,000 ft.Saturday night through Sunday night, then 6,000 ft. Monday.
• highs 30-28 warming to 36 lows 14-17.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my new weekly weather quiz question. What is “the chromosphere?” 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 low (Shaded “U” shape with blue arrows) is replacing the high continuing the wet weather pattern through the Pacific Northwest. The low has pushed a frontal system down at us from the northwest. Behind that front is cold Canadian air that will give us the coldest temperatures of the season so far. That also means that mountain snow levels will be dropping below the passes. So far, no snow is expected in or very near to the valley floors.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 37 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 24 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 41 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A WINTER STORM WARNING IS IN EFFECT FROM 10 AM TUESDAY UNTIL 10 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 4 AM WEDNESDAY  FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TUESDAY UNTIL 10 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TUESDAY UNTIL 4 AM WEDNESDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JEFFERSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with rain changing to showers late tonight (0.50 in. of rain possible),
• Mostly cloudy and cooler with AM showers likely (70%), a good (50%) chance of showers and cooler in the afternoon Tuesday (0.10 in. of rain possible), a good (50%) chance of evening showers (under 0.10 in. of rain possible), a slight (20%) chance of showers late Tuesday night (snow level 1,500 ft.),
• AM clouds, mostly sunny and a bit cooler Wednesday afternoon, clear and cold Wednesday night,
• Sunny Thursday (Thanksgiving Day), then clear at night.
• lows 38-22 highs 45-42.
• Sunny Friday, Saturday, and Sunday, mostly clear each night,
• Then more clouds to partly cloudy Monday.
• highs 40-43 lows 23-29. (seasonal averages high 50 low 36)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Preliminary forecast: Sunny and cool, 35 warming 40 by the end of the game. You should bundle up that’s pretty chilly.

___________________

Forecast for Roseburg:

• Mostly cloudy with evening rain likely (70%), rain and colder late tonight (0.25 in. of rain possible, snow level 2,500 ft. late tonight),
• Mostly cloudy with AM rain, rain and snow showers likely (60%) with a slight (20%) chance of thunderstorms and colder Tuesday afternoon (0.25 in. of rain possible, 1-2 in. of snow possible, snow level 2,000 ft.), evening rain and snow showers likely (70%), a good (50%) chance of rain and snow showers and colder late Tuesday night (under 0.10 in. of rain possible, snow level 1,500 ft.),
• Mostly cloudy with a slight (20%) chance of rain and snow showers Wednesday AM, just mostly cloudy in the afternoon, partly cloudy in the evening, becoming mostly clear and colder late Wednesday night,
• Sunny Thursday (Thanksgiving Day), then clear at night
• lows 42-25 highs 45-40 warming to 43 Thursday.
• Sunny Friday, clear at night,
• Mostly sunny Saturday and Sunday, mostly clear Saturday night, partly cloudy Sunday night,
• Then mostly cloudy with a slight (20%) chance of rain Monday.
• highs 42-46 lows 27-33. (seasonal averages high 51 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with coastal rain tonight while evening rain likely (70%) inland, rain late tonight (0.45 in. of rain possible),
• Coastal showers likely (70%) with a slight chance of thunderstorms Tuesday while AM inland showers likely (70%) and inland showers likely (70%) with a slight (20%) chance of thunderstorms in the afternoon (0.35 in. of rain possible, snow level 2,000 ft. late), a good (50%) chance of showers Tuesday night (under 0.10 in. of rain possible),
• Partly cloudy Wednesday AM, sunny in the afternoon, mostly clear at night,
• Sunny and a bit warmer Thursday (Thanksgiving Day), then clear Thursday night.
• lows 42-32 warming to 38 Thursday night highs 48-45 warming to 48 Thursday night.
• Sunny Friday and Saturday, clear each night,
• Mostly sunny Sunday, partly cloudy Sunday night,
• Then mostly cloudy with a slight (20%) chance of rain Monday.
• highs 49-53 cooling to 47 Sunday night lows 38-41. (seasonal averages high 53 low 42).

________________

Forecast for the Cascades in Lane County:

• Cloudy with rain or snow rain or snow tonight (0.50 in. of rain possible, 3-6 in. of snow possible),
• Mostly cloudy with snow showers and much colder Tuesday (2-5 in. of snow possible), cloudy with snow showers decreasing late Tuesday night (1-3 in. of snow possible),
• AM clouds with a slight (20%) chance of snow showers, a mix of clouds and sun and a bit cooler Wednesday afternoon, mostly clear and very cold at night,
• Sunny Thursday (Thanksgiving Day), then clear at night.
• snow level 7,000 ft. falling to 4,000 ft. late tonight, 2,000 ft. Tuesday, 1,500 ft. Tuesday night and Wednesday, then free air freezing level at the surface Wednesday night through Thursday night.
• lows 24-10 warming to 14 Thursday night highs 26-24 warming to 26 Thursday.
• Sunny and a bit warmer Friday, mostly clear at night,
• Then mostly sunny Saturday, Sunday, and Monday, mostly clear Saturday night, partly cloudy Sunday night.
• free air freezing level at the surface Saturday, 4,000 ft.Saturday night through Sunday night, then 6,000 ft. Monday.
• highs 30-28 warming to 36 lows 14-17.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my new weekly weather quiz question. What is “the chromosphere?” 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.

________________

A sprawling high pressure ridge (Shaded “Arch” shape with blue arrows) sitting just east of  us kept us cool and dry today. A strong cold front is on its way here from the northwest. It will bring back the chance of precipitation and behind it a mass of cold air that will drop snow levels in the area down to about 1,000 ft. No snow expected for the Willamette Valley, yet anyway. An upper level low (Shaded “U” shape with blue arrows) will replace the high continuing the wet weather pattern through the Pacific Northwest.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 39 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 38 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 AM UNTIL 10 PM TUESDAY  FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM TUESDAY UNTIL 10 AM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 AM TUESDAY UNTIL 4 AM WEDNESDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JEFFERSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• More clouds to mostly cloudy with a slight (20%) chance of rain and a bit warmer this afternoon (under 0.10 in. of rain possible), rain tonight (0.50 in. of rain possible),
• Mostly cloudy and cooler with showers likely (70%) Tuesday, (0.15 in. of rain possible), a good (50%) chance of evening showers (under 0.10 in. of rain possible), a slight (20%) chance of showers late Tuesday night,
• AM clouds, mostly sunny and a bit cooler Wednesday, then just clear and cold Wednesday night.
• highs 48-42 lows 37-22.
• Sunny Thursday (Thanksgiving Day), Friday, and Saturday, clear each night,
• Then mostly sunny Sunday.
• highs 40-42 lows 23-26. (seasonal averages high 50 low 37)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Preliminary forecast: Sunny and cool, 35 warming 40 by the end of the game. You should bundle up that’s pretty chilly.

___________________

Forecast for Roseburg:

• Mostly cloudy and a bit warmer with a slight (20%) chance of rain this afternoon, evening rain, rain and colder late tonight (0.25 in. of rain possible),
• Mostly cloudy with showers, snow likely (70%) with a slight (20%) chance of thunderstorms Tuesday AM, rain and snow showers with a slight (20%) chance of thunderstorms and colder in the afternoon (0.20 in. of rain possible, 1-2 in. of snow possible, snow level 2,000 ft.), cloudy with a (40%) chance of rain and snow showers and colder Tuesday night (under 0.10 in. of rain possible, snow level 2,000 ft. falling to 1,000 ft. late),
• Partly cloudy with a slight (20%) chance of AM snow showers, just partly cloudy and a bit cooler Wednesday afternoon, then mostly clear and colder Wednesday night.
• highs 55-40 lows 42-24.
• Sunny Thursday (Thanksgiving Day), Friday, and Saturday, clear Thursday night and Friday night, mostly clear Saturday night,
• Then mostly sunny Sunday.
• highs 42-45 lows 25-28. (seasonal averages high 51 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with a slight (20%) chance of rain and cooler this afternoon (under 0.10 in. of rain possible), rain tonight (0.40 in. of rain possible, snow level 2,000 ft. late),
• Mostly cloudy with showers likely (70%) and a slight (20%) chance of thunderstorms Tuesday AM, coastal showers and a slight (20%) chance of showers thunderstorms and cooler in the afternoon while inland showers and snow showers with a slight (20%) chance of thunderstorms in the afternoon (0.25 in. of rain possible), a (30%) chance of coastal showers Tuesday night while inland evening showers likely (70%) and a good (50%) chance of inland showers late Tuesday night (under 0.10 in. of rain possible),
• Partly cloudy Wednesday, then clear at night.
• highs 55-45 lows 42-33.
• Sunny and a bit warmer Thursday (Thanksgiving Day), clear Thursday night,
• Then sunny Friday through Sunday, clear each night.
• highs 46-52 lows 35-39 cooling to 37 Saturday night. (seasonal averages high 53 low 42).

________________

Forecast for the Cascades in Lane County:

• Partly cloudy and a bit cooler this afternoon, mostly cloudy with rain and snow tonight (0.50 in. of rain possible, 2-6 in. of snow possible),
• Mostly cloudy with snow showers and much colder Tuesday (2-3 in. of snow possible), cloudy with  evening snow showers likely (70%), a good (50%) chance of rain and snow showers Tuesday night,
• Partly cloudy with a slight (20%) chance of snow showers and a bit cooler Wednesday, then becoming mostly clear at night.
• free air freezing level 9,000 ft. falling to 6,000 ft. this afternoon, snow level 5,000 ft. falling to 3,500 ft. late tonight, at the surface Tuesday through Wednesday, then free air freezing level at the surface Wednesday night.
• highs 43-24 lows 24-10.
• Sunny Thursday (Thanksgiving Day) and Friday, clear both nights,
• Then mostly sunny and a bit warmer Saturday and Sunday, mostly clear Saturday night.
• free air freezing level at the surface Thursday through Sunday.
• highs 26-32 lows near 15.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question for the last time. What is “coalescence?” Here is the correct answer. Coalescence is the process by which water droplets in a cloud collide and come together to form raindrops. I’ll have a new weekly weather quiz question for you starting 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. Good luck.

________________

A sprawling high pressure ridge (Shaded “Arch” shape with blue arrows) sitting just east of  us kept us cool and dry today. A strong cold front is on its way here from the northwest. It will bring back the chance of precipitation and behind it a mass of cold air that will drop snow levels in the area down to about 1,000 ft. No snow expected for the Willamette Valley, yet anyway. An upper level low (Shaded “U” shape with blue arrows) will replace the high continuing the wet weather pattern through the Pacific Northwest.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 64 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 32 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 AM UNTIL 7 AM MONDAY FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy with areas of fog and freezing fog late tonight and Monday AM, more clouds to mostly cloudy with a slight (20%) chance of rain and a bit warmer in the afternoon (under 0.10 in. of rain possible), evening rain, showers late Monday night (0.30 in. of rain possible),
• Mostly cloudy and cooler with showers likely (70%) Tuesday (0.15 in. of rain possible), a good (50%) chance of evening showers (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of showers late Tuesday night,
• AM clouds, mostly sunny and a bit cooler Wednesday, then just clear and cold Wednesday night.
• lows 32-37 cooling to 24 Wednesday night highs 48-42.
• Sunny Thursday (Thanksgiving Day), Friday, and Saturday, clear each night,
• Then mostly sunny Sunday.
• highs 40-42 lows 24-26. (seasonal averages high 50 low 37)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Preliminary forecast: Sunny and cool, 36 warming 40-42 by the end of the game.

___________________

Forecast for Roseburg:

• Partly cloudy this evening, mostly clear with patchy fog late tonight,
• Sunny Monday AM, mostly cloudy and a bit warmer with a slight (20%) chance of rain in the afternoon, evening rain, rain and snow and colder late Monday night (0.25 in. of rain possible, snow level 2,000 ft. late at night),
• Mostly cloudy with snow likely (70%) with a slight (20%) chance of thunderstorms Tuesday AM, rain and snow showers with a slight (20%) chance of thunderstorms and colder in the afternoon (0.20 in. of rain possible), cloudy with a (40%) chance of rain and snow showers and colder Tuesday night (under 0.10 in. of rain possible, snow level 2,000 ft.),
• Partly cloudy with a slight (20%) chance of AM snow showers, just partly cloudy and a bit cooler Wednesday afternoon, then mostly clear and colder Wednesday night.
• lows 40-24 highs 55-42.
• Sunny Thursday (Thanksgiving Day), Friday, and Saturday, clear Thursday night and Friday night, mostly clear Saturday night,
• Then sunny Sunday.
• highs 40-45 lows 25-28. (seasonal averages high 51 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly cloudy with patchy coastal fog and a slight (20%) chance of patchy coastal drizzle tonight while patchy fog inland late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of rain and cooler Monday afternoon (under 0.10 in. of rain possible), rain, Monday night (0.40 in. of rain possible),
• Mostly cloudy with showers likely (70%) and a slight (20%) chance of thunderstorms Tuesday AM, showers and a slight (20%) chance of showers thunderstorms and cooler in the afternoon (0.25 in. of rain possible), a good (50%) chance of showers Tuesday night (under 0.10 in. of rain possible),
• Partly cloudy Wednesday, then clear at night.
• lows 43-33 highs 55-48.
• Sunny and a bit warmer Thursday (Thanksgiving Day), clear Thursday night,
• Then sunny Friday through Sunday, clear each night.
• highs 46-52 lows 35-39 cooling to 37 Saturday night. (seasonal averages high 53 low 42).

________________

Forecast for the Cascades in Lane County:

• Partly cloudy tonight,
• Mostly sunny Monday AM, increasing clouds to mostly cloudy and a bit cooler Monday afternoon, evening rain and snow likely (70%), rain and snow showers late Monday night,
• Mostly cloudy with snow showers and much colder Tuesday, cloudy with  evening snow showers likely (70%) Tuesday night,
• Partly cloudy with a slight (20%) chance of snow showers and a bit cooler Wednesday, then becoming mostly clear at night.
• free air freezing level 9,000 ft. tonight, 9,000 ft. falling to 6,000 ft. Monday afternoon, snow level 5,000 ft. falling to 3,000 ft. late Monday night, at the surface Tuesday through Wednesday, then free air freezing level at the surface Wednesday night.
• lows 32-11 highs 43-24.
• Sunny Thursday (Thanksgiving Day) and Friday, clear both nights,
• Then mostly sunny and a bit warmer Saturday and Sunday, mostly clear Saturday night.
• free air freezing level at the surface Thursday through Sunday.
• highs 25-30 lows near 15.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question for the last time. What is “coalescence?” Here is the correct answer. Coalescence is the process by which water droplets in a cloud collide and come together to form raindrops. I’ll have a new weekly weather quiz question for you starting 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. Good luck.

________________

A sprawling high pressure ridge (Shaded “Arch” shape with blue arrows) sits over us keeping us cool and dry for your Sunday. An upper level low (Shaded “U” shape with blue arrows) will replace the high sending us a couple of cold fronts that will drop down through the Pacific Northwest ushering in even colder air.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 61 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 25 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy with patchy fog and areas of freezing fog this AM, mostly sunny this afternoon, partly this evening, mostly cloudy with areas of fog and freezing fog late tonight,
• Partly cloudy with areas of AM fog and freezing fog, more clouds with a slight (20%) chance of rain and a bit warmer Monday afternoon (under 0.10 in. of rain possible), evening rain, showers late Monday night (0.15 in. of rain possible),
• Mostly cloudy and colder with showers Tuesday (snow level 1,500 ft.), a slight (20%) chance of mainly evening showers, just Tuesday night.
• highs 45-48 cooling back to 45 Tuesday lows 32-38 cooling to 27 Tuesday night.
• AM clouds, mostly sunny Wednesday, just clear Wednesday night,
• Then sunny Thursday (Thanksgiving Day), Friday, and Saturday, clear each night.
• highs 40-43 lows 24-26. (seasonal averages high 50 low 37)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Preliminary forecast: Sunny and cool, 36 warming 40-42 by the end of the game.

___________________

Forecast for Roseburg:

• Clear with patchy fog this AM, partly cloudy and a bit warmer this afternoon, mostly clear this evening, partly cloudy with patchy fog and a slight (20%) chance of drizzle late tonight,
• Mostly cloudy with a slight (20%) chance of rain Monday, evening rain likely (70%), showers likely (70%) and colder Monday night (0.25 in. of rain possible),
• Mostly cloudy with rain and snow showers likely (70%) and colder Tuesday, then a (40%) chance of rain and snow showers and colder Tuesday night.
• highs 55-44 lows 40-30.
• Partly cloudy and a bit cooler Wednesday, clear and colder Wednesday night,
• Sunny and just a bit warmer Thursday (Thanksgiving Day) and Friday, clear Thursday night, mostly clear Friday night,
• Then partly cloudy and a bit warmer Saturday.
• highs 39-44 lows 22-29. (seasonal averages high 51 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy today with patchy AM fog, partly cloudy this afternoon and evening, mostly cloudy with patchy coastal fog and a slight (20%) chance of patchy coastal drizzle tonight while patchy fog and a slight (20%) chance of patchy drizzle late tonight (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of rain and cooler Monday (0.15 in. of rain possible), evening rain, coastal showers and a slight (20%) chance of thunderstorms late at night while inland showers late Monday night (0.40 in. of rain possible),
• Mostly cloudy with AM showers and a slight (20%) chance of thunderstorms, then rain and snow showers with a slight (20%) chance of thunderstorms and cooler Tuesday afternoon, a (40%) chance of evening showers, then a (30%) chance of rain and snow showers late Tuesday night.
• highs 59-48 lows 42-35.
• Sunny Wednesday, clear at night,
• Sunny and a bit warmer Thursday (Thanksgiving Day) and Friday, clear Thursday night, mostly clear Friday night,
• Then just partly cloudy Saturday.
• highs 45-49 lows 34-38. (seasonal averages high 54 low 42).

________________

Forecast for the Cascades in Lane County:

• Mostly sunny today, partly cloudy tonight,
• Partly cloudy and a bit cooler Monday, becoming mostly cloudy with evening rain and snow, rain and snow showers late Monday night,
• Mostly cloudy with snow showers and much colder Tuesday, then a good (50%) chance of snow showers Tuesday night.
• free air freezing level 11,000 ft. today, 10,000 ft. falling to 9,000 ft. late  tonight, 8,000 ft. falling to 6,500 ft. Monday, snow level 4,500 ft. falling to 3,500 ft. Monday night, then at the surface Tuesday and Tuesday night.
• highs 44-25 lows 32-15.
• Partly cloudy with a slight (20%) chance of snow showers Wednesday, mostly clear at night,
• Sunny and a bit warmer Thursday (Thanksgiving Day) and Friday and Saturday, clear each night,
• Then mostly sunny Saturday.
• snow level at the surface Wednesday, then free air freezing level at the surface Wednesday night, 4,000 ft. Thursday, 4,500 ft. Thursday night, 5,000 ft. Friday, then 4,500 ft. Friday night and Saturday.
• highs 25-34 lows 12-14.

________________

**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 and Lane County news on-line at eugenedailynews.com.

________________

Here is my weekly weather quiz question for the last time. What is “coalescence?” Here is the correct answer. Coalescence is the process by which water droplets in a cloud collide and come together to form raindrops. I’ll have a new weekly weather quiz question for you starting 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. Good luck.

________________

A sprawling high pressure ridge (Shaded “Arch” shape with blue arrows) sits over us keeping us cool and dry for your Sunday. An upper level low (Shaded “U” shape with blue arrows) will replace the high sending us a couple of cold fronts that will drop down through the Pacific Northwest ushering in even colder air.

_______________

Air Quality Index:

Eugene-Springfield: The Air Quality Index is 32 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 41 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

________________

Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear with patchy fog late tonight and Sunday AM, mostly sunny in the afternoon, partly cloudy Sunday night,
• Mostly cloudy with a slight (20%) chance of early AM showers, a bit warmer with rain chance increasing to a good (50%) chance of showers and warmer Monday afternoon (under 0.10 in. of rain possible), showers Monday night (0.15 in. of rain possible),
• Mostly cloudy and colder with showers likely (70%) Tuesday (snow level 1,500 ft.), a slight (20%) chance of showers Tuesday night.
• lows 28-38 cooling to 27 Tuesday night highs 46-52 cooling to 43 Tuesday.
• AM clouds, mostly sunny Wednesday, just clear Wednesday night,
• Sunny Thursday (Thanksgiving Day), clear at night,
• Then mostly sunny Friday and Saturday, mostly clear Friday night.
• highs 40-43 lows 26-28. (seasonal averages high 50 low 37)

_____________________

Your College Football Forecast:

The Civil War Game Friday November 27th:

Ducks vs Beavers at Autzen Stadium – Kickoff 1:00 PM PST: Preliminary forecast: Sunny and cool, 36 warming 40-42 by the end of the game.

_____________________

Forecast for Roseburg:

• Clear this evening, patchy fog late tonight and Sunday AM, partly cloudy and a bit warmer Sunday afternoon, mostly clear in the evening, partly cloudy with patchy fog and a slight (20%) chance of drizzle late Sunday night,
• Mostly cloudy with a slight (20%) chance of rain Monday, evening rain likely (70%), showers likely (70%) and colder Monday night (0.25 in. of rain possible),
• Mostly cloudy with rain and snow showers likely (70%) and colder Tuesday, then a (40%) chance of rain and snow showers and colder Tuesday night.
• lows 38-42 cooling to 30 Tuesday night highs 55-44.
• Partly cloudy and a bit cooler Wednesday, clear and colder Wednesday night,
• Sunny and just a bit warmer Thursday (Thanksgiving Day) and Friday, clear Thursday night, mostly clear Friday night,
• Then partly cloudy and a bit warmer Saturday.
• highs 39-44 lows 22-29. (seasonal averages high 51 low 39)

________________

Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly clear with patchy fog late tonight,
• Partly cloudy Sunday with patchy AM fog, partly cloudy in the afternoon and evening, mostly cloudy with patchy coastal fog and a slight (20%) chance of patchy coastal drizzle at night while patchy fog and a slight (20%) chance of patchy drizzle late Sunday night (under 0.10 in. of rain possible),
• Mostly cloudy with a slight (20%) chance of rain and cooler Monday (0.15 in. of rain possible), evening rain, coastal showers and a slight (20%) chance of thunderstorms late at night while inland showers late Monday night (0.40 in. of rain possible),
• Mostly cloudy with AM showers and a slight (20%) chance of thunderstorms, then rain and snow showers with a slight (20%) chance of thunderstorms and cooler Tuesday afternoon, a (40%) chance of evening showers, then a (30%) chance of rain and snow showers late Tuesday night.
• lows 42-35 highs 59-48.
• Sunny Wednesday, clear at night,
• Sunny and a bit warmer Thursday (Thanksgiving Day) and Friday, clear Thursday night, mostly clear Friday night,
• Then just partly cloudy Saturday.
• highs 45-49 lows 34-38. (seasonal averages high 54 low 42).

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Mostly sunny Sunday, partly cloudy at night,
• Partly cloudy with a (30%) chance of AM rain, clouds increasing to mostly cloudy with a good (50%) chance of rain and a bit cooler Monday afternoon, evening rain, showers Monday night,
• Mostly cloudy with snow showers and much colder Tuesday, then a good (50%) chance of snow showers Tuesday night.
• free air freezing level 11,000 ft. tonight, 9,000 ft. Sunday and Sunday night, snow level 6,000 ft. falling to 4,500 ft. Monday, 3,500 ft. Monday night, then at the surface Tuesday and Tuesday night.
• lows 30-32 cooling to 15 Tuesday night highs 48-25.
• Partly cloudy with a slight (20%) chance of snow showers Wednesday, mostly clear at night,
• Then mostly sunny and a bit warmer Thursday (Thanksgiving Day), Friday, and Saturday, mostly clear each night,
• snow level at the surface Wednesday, then free air freezing level at the surface Wednesday night through Saturday.
• highs 25-34 lows 10-16.

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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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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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Here is my weekly weather quiz question for the last time. What is “coalescence?” Here is the correct answer. Coalescence is the process by which water droplets in a cloud collide and come together to form raindrops. I’ll have a new weekly weather quiz question for you starting 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. Good luck.

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A frontal system moved through the Pacific Northwest bringing showers through early Thursday. Upper level high pressure has taken over clearing the sky and cooling us down. A frontal system will roll in starting Monday and that should get the precipitation falling again.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 30 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy with patchy AM fog, mostly sunny this afternoon and Sunday, mostly clear tonight with patchy fog late late and partly cloudy Sunday night,
• Mostly cloudy with a slight (20%) chance of AM showers, a bit warmer with a good (50%) chance of showers Monday afternoon, then showers Monday night.
• highs 48-45 warming to 52 Monday lows 28-38.
• Mostly cloudy and colder with showers likely (70%) Tuesday (snow level 1,500 ft.), a slight (20%) chance of evening showers, partly cloudy at night,
• Mostly sunny Wednesday, just clear Wednesday night,
• Sunny Thursday (Thanksgiving Day), clear at night,
• Then mostly sunny Friday.
• highs near 42 lows near 26. (seasonal averages high 50 low 37)

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Your Saturday College Football Forecast:

Ducks vs USC at Autzen Stadium – Kickoff 12:30 PM PST: Mostly sunny, 42 warming to near 48 by the end of the game, wind NE 5-10 mph. Dress accordingly because it will be quite cool.

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Beavers vs Washington at Reser Stadium – Kickoff 3:00 PM PST: Mostly sunny then mostly clear, near 48 cooling as the game progresses , wind NE 5-10 mph diminishing late. Dress accordingly because it will be quite cool.

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Forecast for Roseburg:

• Partly cloudy with patchy fog this AM, sunny and a bit warmer this afternoon, mostly clear with patchy fog late tonight,
• Patchy AM fog, partly cloudy and a bit warmer Sunday afternoon, partly cloudy with a slight (20%) chance of rain and drizzle late Sunday night,
• Mostly cloudy with a (30%) chance of rain Monday, evening showers, then rain and snow showers likely (70%) and colder Monday night.
• highs 55-58 cooling back to 55 Monday lows 35-40.
• Mostly cloudy with rain and snow showers and colder Tuesday, a good (50%) chance of rain and snow showers and colder Tuesday night,
• Partly cloudy and a bit cooler Wednesday, mostly clear Wednesday night,
• Mostly sunny and just a bit cooler Thursday (Thanksgiving Day) and Friday, mostly clear Thursday night.
• highs 53-38 lows 39-30. (seasonal averages high 51 low 40)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Partly cloudy with patchy AM fog, sunny this afternoon, mostly clear with patchy fog late tonight,
• Partly cloudy Sunday with patchy AM fog, partly cloudy in the afternoon and evening, mostly cloudy with a slight (20%) chance of patchy coastal drizzle at night while a slight (20%) chance of patchy drizzle late Sunday night,
• Partly cloudy with a slight (20%) chance of rain Monday, evening showers, then showers likely (70%) late Monday night.
• highs 59-62 cooling to 55 Monday lows 42-45 cooling back to 42 Monday night.
• Mostly cloudy with AM showers, rain and snow showers likely (70%) and cooler Tuesday afternoon, a (40%) chance of rain and snow showers Tuesday night,
• Partly cloudy Wednesday, mostly clear at night,
• Then mostly sunny Thursday (Thanksgiving Day) and Friday, mostly clear Thursday night.
• highs 46-48 lows 35-32 warming back to 35 Friday. (seasonal averages high 54 low 42).

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Forecast for the Cascades in Lane County:

• Sunny and just a bit warmer today and Sunday, clear tonight, partly cloudy Sunday night,
• Partly cloudy in the AM, mostly cloudy with a (40%) chance of showers and a bit cooler Monday afternoon, showers Monday night.
• free air freezing level 10,000 ft. today, 11,000 ft. tonight, 10,000 ft. Sunday, 9,000 ft. Sunday night, 7,000 ft. Monday AM, snow level 8,000 ft. falling to 5,00 ft. Monday afternoon, then 4,500 ft. falling to 2,000 ft. Monday night.
• highs 43-48 cooling back to 43 Monday lows 30-32 cooling to 25 Monday night.
• Mostly cloudy with snow showers and much colder Tuesday, a good (50%) chance of snow showers Tuesday night,
• Partly cloudy with a slight (20%) chance of snow showers Wednesday, mostly clear at night,
• Then mostly sunny and a bit warmer Thursday (Thanksgiving Day) and Friday, mostly clear Thursday night.
• snow level at the surface Tuesday through Wednesday, free air freezing level at the surface Wednesday night and Thursday, 5,000 ft. Thursday night, then 4,500 ft. Friday.
• highs 25-30 lows 16-12 warming to 17 Thursday night.

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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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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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