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Advisories: A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY FOR THE SOUTH CENTRAL OREGON COAST. A FREEZE WATCH IS IN EFFECT FROM 2 AM UNTIL 8 AM MONDAY NIGHT THROUGH TUESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM NEXT MONDAY FOR THE I-5 CORRIDOR FROM PORTLAND SOUTH THROUGH SALEM, AND FOR THE WESTERN COLUMBIA GORGE, AND UNTIL 6 PM MONDAY FOR THE SOUTH WILLAMETTE VALLEY INCLUDING EUGENE AND SPRINGFIELD. AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 4 PM NEXT WEDNESDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
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A high pressure ridge (“Arch” shape on the jet stream) is planted offshore and the airflow will keep us in the sunshine, as long as the fog clears. So, for the better part of the next week we’ll see sunshine after the late night and early AM fog and freezing fog clear out. That also means that our air quality is suffering with the sinking air of high pressure holding on to the pollutants at the surface.
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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: Mostly cloudy with patchy fog and freezing fog this AM, a mix of clouds and sun this afternoon with lingering afternoon fog, partly cloudy in the evening, mostly cloudy with areas of fog increasing late tonight and Monday AM, mostly sunny in the afternoon, partly cloudy in the evening, cloudy with increasing areas of fog late Monday night and Tuesday AM, partly cloudy in the afternoon, mostly cloudy with patchy evening fog, then increasing areas of fog late Tuesday night highs near 38-42 lows 28-32. AM clouds and patchy fog Wednesday, partly cloudy in the afternoon and evening with lingering fog, mostly cloudy with areas of fog late Wednesday night and Thursday AM, partly cloudy in the afternoon and evening, mostly cloudy Thursday night, a mix of clouds and sun Friday, partly cloudy Friday night, then a mix of clouds and sun with a slight (20%) chance of showers Saturday afternoon highs near 45 lows near 32. (seasonal averages high 47 low 35)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with patchy fog and freezing fog early this AM, partly cloudy this afternoon, clear in the evening, mostly cloudy with patchy fog and freezing fog late tonight and Monday AM, partly cloudy in the afternoon, mostly cloudy with patchy fog late Monday night and Tuesday AM, mostly sunny in the afternoon, patchy evening fog, mostly clear with areas of freezing fog late Tuesday night highs 40-47 lows 29-32. Patchy AM fog, sunny Wednesday afternoon, mostly clear Wednesday night, patchy fog and partly cloudy Thursday, mostly clear Thursday night, mostly sunny Friday, mostly clear Friday night, then partly cloudy Saturday highs 48-42 warming to near 45 Saturday lows 33-29 warming to 32 Saturday. (seasonal averages high 48 low 37)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Areas of frost and patchy fog this AM with freezing fog inland, sunny this afternoon, clear with patchy fog and areas of freezing fog again tonight and Monday AM, sunny in the afternoon, clear with patchy coastal fog Monday night, AM freezing fog, sunny Tuesday afternoon, mostly clear with patchy evening fog, then areas of freezing fog late Tuesday night highs near 50 lows 32-36. Patchy AM fog, sunny Wednesday afternoon, partly cloudy Wednesday night, patchy AM fog, partly cloudy Thursday afternoon and Thursday night, sunny Friday, partly cloudy Friday night, then mostly cloudy Saturday highs near 50 lows 38-34. (seasonal averages high 52 low 40).
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Forecast for the Cascades of Lane County: Sunny today, clear tonight, sunny Monday, mostly clear Monday night, mostly sunny Tuesday AM, partly cloudy in the afternoon, then mostly clear Tuesday night free air freezing level 6,500 ft. today, 6,000 ft. tonight, 7,000 ft. Monday, 6,500 ft. Monday night and Tuesday, then 8,000 ft. Tuesday night highs 40-46 lows 22-28. Mostly sunny Wednesday and Thursday with mostly clear nights, partly cloudy Friday and Friday night, then a mix of clouds and sun with a slight (20%) chance of rain and snow showers Saturday free air freezing level 8,000 ft. Wednesday, 7,000 ft. Wednesday night, 6,500 ft. Thursday, 7,000 ft. Thursday night and Friday, 7,500 ft. Friday night, then snow level 5,500 ft. Saturday highs 44-32 warming to 38 by Saturday lows near 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.
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Get your local Eugene-Springfield news on-line at Eugene Daily News.com.
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