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The jet stream shows a high pressure ridge ( “arch” shaped area over the Pacific Northwest) that has kept us under a relatively calm weather pattern is moving Eastward away from us and a large trough of low pressure swinging in behind it.  The next frontal system is pushing through with other frontal systems following behind it (positions shown are for Tuesday). Remember that, particularly this time of the year, often when it’s not raining it is usually fogging.

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Advisories:  A HIGH WIND WARNING IS IN EFFECT FROM 5 AM UNTIL 10 PM MONDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST. A WIND ADVISORY IS IN EFFECT FROM 4 AM UNTIL 10 PM MONDAY FOR JACKSON COUNTY AND THE KLAMATH BASIN. A HIGH WIND WARNING IS IN EFFECT FROM 10 AM MONDAY UNTIL 4 PM TUESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND 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: Cloudy with rain likely (60%) this AM, a (40%) chance of afternoon rain (0.10 in. of rain possible), a (30%) chance of rain this evening (0.10 in. of rain possible) and again Monday AM, rain likely (60%) Monday afternoon (0.25 in. of rain possible), then rain Monday night (0.50 in. of rain possible) and windy (wind: S 15-25 mph gusts to 35 mph), periods of rain Tuesday, and showers likely (60%) Tuesday night highs 53-45 lows 38-33. Mostly cloudy with showers likely (60%) Wednesday and Wednesday night, then a good (50%) chance of showers Thursday through Saturday highs 49-44 lows 34-30. (seasonal  averages high 50 low 35)

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Forecast for the Umpqua Basin including, Roseburg: Cloudy with rain likely (60%) this AM, a (40%) chance of rain this afternoon, mostly cloudy tonight, mostly cloudy with a slight (20%) chance of AM rain Monday, rain likely (60%) in the afternoon, rain and breezy (wind: S 15-25 mph gusts to 40 mph in the evening) Monday night (snow level 3,500 ft. falling to 3,000 ft. late) highs 58-53 lows 42-38. Mostly cloudy with rain Tuesday, rain and snow showers Tuesday evening, rain and snow showers likely (60%) Tuesday night through Thursday, rain and snow showers likely (60%) Thursday night and Friday AM, then a good (50%) chance of rain and snow showers Friday night and  and a (30%) chance Saturday highs 45-42 rising to near 50 Saturday lows 37-32. (seasonal averages high 54 low 36)

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Forecast for the South Oregon Coast including Coos Bay and North Bend: Cloudy with AM coastal rain today, AM rain likely (60%) inland, a good (50%) chance of rain this afternoon, a slight (20%) chance of coastal rain this evening and breezy (wind: S 15-25 mph at the beaches S 10-20 mph inland, gusts to 40 mph late tonight), a slight (20%) chance of rain Monday AM, then rain and windy (wind: S 25-35 mph at the shore, S 20-30 mph inland) Monday afternoon, and  rain and windy (wind: S 25-35 mph gusts to 50 mph shifting SW 20-25 mph gusts to 40 mph late at night) Monday night, mostly cloudy with rain and breezy (wind: Sw 15-25 mph) Tuesday, evening showers, then showers likely (60%) Tuesday night highs 56-45 lows 43-38. Mostly cloudy with showers likely (60%) Wednesday and Wednesday evening, rain and snow showers late at night, showers likely (60%) Thursday,  a (40%) chance of rain and snow showers Thursday night and a good (50%) chance Friday, then a  good (50%) chance of showers Friday night, and a (30%) chance of showers Saturday highs 44-50 lows 35-39. (seasonal averages high 54 low 41).

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Forecast for the Cascades of Lane County:  Periods of AM rain and snow, then rain likely (60%) this afternoon (1-2 in. of snow possible), a slight (20%) chance of rain this evening, then just mostly cloudy tonight, mostly cloudy with a slight (20%) chance of rain Monday AM, rain and snow likely (60%) Monday afternoon, rain and snow Monday night (3-7 in. of snow possible) and breezy (wind: SW 15-25 mph gusts to 35 mph), periods of snow Tuesday, and snow showers likely (60%) Tuesday night snow level 4,000 ft. rising to 5,500 ft.  today, 6,000 ft. tonight, 5,000 ft. Monday afternoon, 3,500 ft.  Monday night, 3,000 ft. Tuesday, and 2,500 ft. Tuesday night highs 43-33 lows 30-24. Mostly cloudy with a snow showers likely (60%) Wednesday through Thursday, mostly cloudy with snow showers likely (60%) Thursday, then a good (50%) chance of snow showers Thursday night through Saturday snow level 2,500 ft. Wednesday and Saturday, at the surface Thursday night through Friday night highs 34-40 lows 23-27.

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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.