Here is my Weekly Weather Quiz Question. What is the “name” (acronym)  used to remember the order of the colors in a rainbow? Please post your answer as a comment at the end of this forecast page. The first person to post the correct answer will win one week of free personalized weather forecasts tailored to your needs. You have until Friday afternoon to post your answer. Good luck.

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An upper level trough of low pressure is sending storms in waves at the Pacific Northwest. That means a more wet weather  ahead.  Another disturbance (not close enough to see on the maps yet) will march through getting us even wetter and this one will have some serious winter weather attached to it. Low snow levels will keep new snow falling in the mountains which will increase the snow depth so there will be more water available as spring runoff to raise the levels of the reservoirs. By Monday a new frontal system will be moving in.

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Advisories:  A HIGH WIND WARNING IS IN EFFECT FROM 6AM UNTIL 5PM FRIDAY FOR THE NORTH AND CENTRAL OREGON COAST AND FROM 6AM UNTIL 5PM FRIDAY FOR WILLAPA HILLS AND NORTH AND CENTRAL COAST RANGE OF OREGON.  A HIGH WIND WARNING IS IN EFFECT FROM 5AM UNTIL NOON FRIDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WIND ADVISORY IS IN EFFECT FROM 7AM FRIDAY MORNING THROUGH 5PM FRIDAY EVENING FOR THE  I-5 CORRIDOR FROM PORTLAND SOUTH TO EUGENE . A WINTER STORM WARNING IS IN EFFECT FROM 1AM FRIDAY THROUGH 5AM SATURDAY FOR THE NORTH CASCADE FOOTHILLS ABOVE 1,000′. A WINTER STORM WARNING IS IN EFFECT FROM 1AM FRIDAY THROUGH 5 AM SATURDAY FOR THE NORTH AND CENTRAL OREGON CASCADES AND THE CASCADES OF LANE COUNTY  AND FOR THE UPPER  HOOD RIVER VALLEY ABOVE 1,000′ FROM 1AM UNTIL 2PM FRIDAY.  A WINTER STORM WARNING IS IN EFFECT FROM 5AM UNTIL 5PM FRIDAY FOR THE SOUTH CENTRAL AND SOUTH CASCADES OF OREGON. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6AM UNTIL 5PM FRIDAY FOR THE COAST RANGE OF NORTHWEST OREGON 2PM FRIDAY UNTIL 5AM SATURDAY FOR THE CASCADE FOOTHILLS OF LANE COUNTY.

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Here are your detailed forecasts. **

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield:  Mostly cloudy with a slight (20%) chance of evening rain then rain late tonight low 35. Rain  and windy (winds South switching to Southwest 20-30 mph gusts to 50 mph) Friday morning then showers and possible thunderstorms (small hail possible) in the afternoon with showers likely (60%) at night and isolated evening thunderstorms (small hail possible) snow level 1,000′ late, don’t expect it to stick,  high 50 low near 34. Mostly cloudy with a good (50%) chance of showers Saturday and likely (60%) Saturday night high 52 low 33. Mostly cloudy with rain likely (60%) Sunday and  Sunday night and showers likely  (60%) Monday highs 49-53 low 38. Mostly cloudy a good (50%) chance of showers Monday night  and (30%-40%) chance through Tuesday night highs 52-56 lows 37-40. Partly cloudy with a (30%) chance of showers Wednesday through Thursday high 57-54 low 39.

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Forecast for the Umpqua Basin including Roseburg: Cloudy with a (20%) chance of evening rain and snow, then rain late tonight  snow level 2,500′ rising to 3,000′ low 42.  Rain and windy Friday (winds South 10-20 mph shifting Southwest 20-30 mph by afternoon) with possible thunderstorms and small hail in the afternoon, rain and snow showers likely (60%) in the evening snow level 2,000′ 1″ of snow possible  then rain and snow showers likely (60%) at night snow level 2,500′ late Friday night high 52 low 39. Mostly cloudy with a good (50%) chance of showers Saturday snow level 2,000′ rising to 2,500′ in the afternoon then rain and snow showers likely (60%) Saturday night snow level 3,000′ high 54 low 39. Rain Sunday and Sunday night and showers (60%) likely Monday highs 53-55 low 38 . A (50%) chance of showers Monday night and Tuesday low 40 high 56. Mostly cloudy with a slight (20%) chance of showers Tuesday night through Wednesday night, then a slight (20%) chance of showers Thursday lows near 40 highs 57-60.

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Mostly cloudy with a (30%) chance of rain this evening with rain late at night and windy (winds South 20-30 mph late tonight at the coast and South 10-20 mph inland late) low 39. Rain Friday morning and very windy (winds South 25-40 mph shifting Southwest 25-30 mph in the afternoon at the coast and Southwest 20-30 mph shifting West 20-25 mph in the afternoon inland) then add the chance of thunderstorms and small hail in the afternoon high 54. Showers likely (60%) and breezy (winds West 15-25 mph lowering to 10-15 mph late Friday night) with isolated thunderstorms and small hail then in the evening and showers likely (60%) late snow level 2,000′ low 37. Mostly cloudy with a (40%) chance of showers Saturday then evening showers likely (60%) Saturday night with showers likely (60%) at the coast and showers likely (60%) inland high 52 low 40. Mostly cloudy with rain and breezy Sunday and Sunday night, and showers Monday highs near 55 low 38. Mostly cloudy showers likely (60%) Monday night and Tuesday with a (30%-40%) chance of showers Tuesday night through Wednesday night lows 40-43  highs 55-53 . Just a slight (20%) chance of showers Thursday high 57.

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Forecast for the Cascades of Lane County: A slight (20%) chance of evening snow, then snow likely (60%) late snow level  2,000′  low 23.  Mostly cloudy Friday with snow and rain changing over to snow in the afternoon snow level 2,500′ rising to 4,000′ 10-20″ of snow possible, then snow, heavy at times Friday evening 5-10″ of snow possible, changing to snow showers Friday night (breezy-winds Southwest 15-25 mph gusts to 45 mph) that will be likely (60%) Saturday snow level at the surface Friday night and Saturday highs 33-29 low 20. Mostly cloudy with a good (50%) chance of snow showers Saturday night snow level at the surface low 2o. Snow and rain likely (60%) Sunday and Sunday night snow level 3,000′ high 37 low 22. Mostly cloudy with rain and snow showers likely (60%) and Monday  and Monday night snow level 3,500′ high 33 low 22. Mostly cloudy with a good (50%) chance of rain and snow showers Tuesday and  Tuesday night snow level  4,000′ to 4,500′  high 43 low 28. Partly cloudy with a slight (20%) chance of rain and snow showers Wednesday through Thursday snow level 4,000′ Wednesday, 3,500′ Wednesday night, and 4,500′ Thursday highs 46-42 low 25 .

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