It’s time again for 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. 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  frontal system will march through getting us even wetter. By Friday a new storm system will be approaching the coast. 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.

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Advisories:   A HIGH SURF ADVISORY IS IN EFFECT UNTIL 5AM WEDNESDAY FOR THE NORTH AND CENTRAL OREGON COAST.  A HIGH SURF ADVISORY IS IN EFFECT UNTIL    5 PM WEDNESDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.  A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11PM TONIGHT ABOVE 3,000′ FOR THE NORTH OREGON CASCADES INCLUDING THE CASCADES OF LANE COUNTY  , (4-8″ of snow TONIGHT, AND 2-5″ TOMORROW). A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11PM TONIGHT FOR THE SOUTH CENTRAL AND SOUTH CASCADES OF OREGON (  3-6″ OF SNOW TONIGHT AND 1″ TOMORROW ). A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11PM TONIGHT FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY ABOVE 2,000′ AND THE EASTERN DOUGLAS COUNTY FOOTHILLS .

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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 showers a chance of an isolated evening thunderstorms (some small hail possible) then a good (50%) chance of showers late snow level 1,000′ late at night tonight  up to 1″ of snow possible down to that level low 34. A good (50%) chance of showers Wednesday morning (snow level near 1,000′) with showers likely and possible afternoon thunderstorms high 48. Mostly cloudy with a (40%) chance of showers and possible thunderstorms Wednesday evening then partly cloudy with a slight (20%) chance of showers late at night and Thursday low 32 high near 52. Mostly cloudy with a slight (20%) chance of evening showers then rain likely (60%) Thursday night with rain Friday morning and showers Friday afternoon lows near 35 high 54. Mostly cloudy with a good (50%) chance of showers  Saturday and likely (60%) Saturday night high 55 low 34. Rain likely (60%) Sunday, showers likely (60%) Sunday night and a (40%) chance of showers Monday highs 52 low 36 . Mostly cloudy with a (40%) chance of showers Monday night and Tuesday low 37 high 56.

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with rain and snow showers this evening then becoming likely (60%) late tonight snow level 2,000′ 1″ of snow possible low 33 . Mostly cloudy with rain and snow showers likely (60%) Wednesday snow level 2,500′ 1″ of snow possible  high 53. Just a (40%) chance of rain and snow showers likely Wednesday night snow level 2,500′ low 34. A slight (20%) chance of showers Thursday, cloudy with a good (50%) chance of rain and snow in the evening and rain or snow Thursday night  snow level 3,000′  high 55 low 40.  Rain and breezy Friday then rain and snow showers likely (60%) at night high 52 low 36. Mostly cloudy with AM showers likely (60%) Saturday then a (40%) chance of afternoon and evening showers, then a good (50%) chance of rain late Saturday night high 56 low 40. Rain likely (60%) Sunday and showers likely (60%) Sunday night high 50 low 38. Mostly cloudy with a (40%) chance of showers Monday through Tuesday highs 55-57 low 39.

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Mostly cloudy with showers and scattered thunderstorms this evening then showers likely (60%) at the coast and rain and snow showers likely (60%) inland late tonight snow level 2,000′  low 37. Showers likely (60%) with isolated thunderstorms Wednesday then a (40%) chance of showers Wednesday night high 54 low 35. Mostly cloudy with a slight (20%) chance of showers Thursday then a good (50%) chance of evening rain and then rain and breezy (winds South 15-25) late Thursday night high 50 low 40. Rain and windy Friday, showers likely (60%) Friday night through Saturday evening highs 55 . Rain likely (60%) late Saturday night low 40 and Sunday morning then rain Sunday afternoon high 54. Mostly cloudy with showers likely (60%) and breezy late Sunday night and breezy, then (50%) chance of showers Monday trough Tuesday low 39-37 highs 53-55 .

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Forecast for the Cascades of Lane County: Mostly cloudy with snow showers this evening and snow showers likely (60%) late tonight snow level at the surface 4-8″ of snow possible tonight low 23. Snow showers likely (60%) Wednesday snow level at the surface 2-5″ of snow possible high 32. Mostly cloudy with a (30%) chance of snow showers Wednesday night snow level at the surface low 20. A slight (20%) chance of snow showers Thursday, a good (50%) chance of evening snow showers, then snow likely (60%) late Thursday night snow level  2,500′ high 29-35 lows 24 . Mostly cloudy Friday with morning rain and snow then afternoon and night time snow showers and breezy snow level 3,000′ falling to 2,500′ high 33 low 21 . Mostly cloudy with rain and snow showers likely (60%) Saturday and Saturday night then snow and rain likely (60%) Sunday snow level 3,000′ rising to 3,500′ Sunday highs 33-36 low 26. Mostly cloudy with rain and snow showers likely (60%) Sunday night and a (40%) chance of showers Monday through Tuesday snow level 3,500′ rising to 4,000′ Monday  lows 24-26 highs 42-44.

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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.