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The jet stream shows a large trough of low pressure ( “U” shaped area over us) that pumped a lot of moisture our way.  It will move away from us, but another upper level low will swing down about mid week. A frontal system has dropped Southward through California with  a break in systems behind it and it looks like we’ll dry out for the rest of the weekend before more storms head toward us next week. Another burst of cold air will follow a frontal system late in the week.

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Advisories:  A WINTER WEATHER ADVISORY IS IN EFFECT  UNTIL 10 PM TONIGHT FOR NORTHERN AND EASTERN KLAMATH COUNTY, CENTRAL, EASTERN,  AND WESTERN LAKE 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 and Albany-Corvallis: Partly cloudy with patchy fog late tonight and Sunday AM, partly cloudy Sunday afternoon, mostly cloudy with a slight (20%) chance of showers late Sunday night, mostly cloudy with a slight (20%) chance of showers Monday (Presidents Day) and just mostly cloudy Monday night, cloudy with a good (50%) chance of showers Tuesday and Tuesday night lows 28-33 cooling to 29 Tuesday night highs near 48-43. Cloudy with a good (50%) chance of showers Wednesday, then a (40%) chance of rain and snow showers Wednesday night through Friday night, then partly cloudy with a (40%) chance of rain and snow showers Saturday highs 40-44 lows 29-25. (seasonal  averages high 51 low 35)

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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with isolated showers this evening, patchy AM fog Sunday, then partly cloudy, mostly cloudy with a slight (20%) chance of rain and snow showers late Sunday night (snow level 1,000 ft. late), mostly cloudy with a slight (20%) chance of rain and snow showers (snow level 1,500 ft. rising to 2,000 ft. in the afternoon) Monday (Presidents Day), just mostly cloudy Monday night, rain and snow showers likely (60%) Tuesday and Tuesday night lows 30-34 highs 48-52. Mostly cloudy with rain and snow showers likely (60%) Wednesday through Thursday, then mostly cloudy with a (40%) chance of rain and snow showers Thursday night through Saturday highs 40-45 lows near 32. (seasonal averages high 56 low 37)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy this evening,  partly cloudy late tonight and Sunday, mostly cloudy with a good (50%) chance of coastal showers Sunday night, a slight (20%) chance of inland evening showers, then rain and snow showers likely (60%) late Sunday night (snow level 1,000 ft.), mostly cloudy with a (40%) chance of showers (snow level 1,500 ft.) Monday (Presidents Day), a good (50%) chance of coastal showers late Monday night, showers likely (60%) Tuesday, then rain and snow showers likely (60%) Tuesday night lows 37-34 highs 46-50.  Mostly cloudy with rain and snow showers likely (60%) Wednesday through Thursday, then mostly cloudy with a good (50%) chance of rain and snow showers Thursday night and (40%) Friday through Saturday highs near 45 lows near 35. (seasonal averages high 55 low 41).

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Forecast for the Cascades of Lane County:  Mostly cloudy with a slight (20%) chance of snow showers this evening South of Mt. Jefferson, partly cloudy late tonight and Sunday, mostly cloudy with a slight (20%) chance of snow showers a slight (20%) chance of snow showers Sunday night and Monday (Presidents Day), mostly cloudy to the South and snow showers likely (60%) North Monday night, snow showers Tuesday, and snow showers likely (60%) Tuesday night free air freezing level at the surface tonight, rising to 3,500 ft. Sunday afternoon, then a snow level at the surface Sunday night, rising to 3,000 ft. Monday, 2,500 ft. Monday night, back down to the surface Tuesday and Tuesday night lows 22-18 highs 32-27. Mostly cloudy with snow showers likely (60%) Wednesday, then mostly cloudy with a good (50%) chance of snow showers Wednesday night through Saturday snow level at the surface Wednesday through Saturday highs 22-26 lows 18-12.

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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.