An upper level High Pressure ridge (the “arch” shaped portion of the yellow lines) is slowly moving away from us. A trough of low pressure ( “U” shaped area) is sliding down from the Gulf of Alaska and it will move eastward just to the north of us. A weak cool front has brought cooler temperatures and a few morning sprinkles today. A very weak cold front will drop down from the northwest by Thursday, but it looks like it will have little or no effect.
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Advisories: NON AT THIS TIME.
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The Updated Pollen Count Forecast for the Eugene-Springfield area : Trees LOW, Grass VERY HIGH, and weeds LOW. Data from Allergy and Asthma Research Group.
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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: AM clouds and a few light sprinkles, then a mix of clouds and sun and cooler today, partly cloudy tonight, AM clouds and a mix of clouds and sun Tuesday, and partly cloudy Tuesday night highs 77-80 lows 50-47. Mostly sunny Wednesday through Sunday and mostly clear at night highs 83-87 lows 49-52. (seasonal averages high 81 low 51)
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Forecast for the Umpqua Basin including Roseburg: AM clouds and patchy fog with a slight (20%) chance of light rain or drizzle, then mostly sunny today through Wednesday, and mostly clear this evening and mostly cloudy at night highs varying from 80-88 lows near 52-54. Clear nights and sunny Thursday through Sunday highs upper 80’s to 90 lows mid 50’s. (seasonal averages high 85 low 54)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Patchy AM fog and light drizzle then mostly cloudy at the shore today and AM clouds then mostly sunny inland high 65. AM clouds then mostly sunny Tuesday, mostly cloudy Tuesday night and Wednesday AM, sunny Wednesday afternoon and mostly clear at night highs 66-67 lows 50-53. Mostly sunny to sunny Thursday through Sunday, and clear each night highs varying from 62-66 lows near 50. (seasonal averages high 66 low 52).
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Forecast for the Cascades of Lane County: A mix of clouds and sun today, and partly cloudy and cooler tonight, a mix of clouds and sun Tuesday, and partly cloudy at night free air freezing level 14,000 ft. highs 69-72 low 42 . Mostly sunny Wednesday through Sunday, and mostly clear at night free air freezing level 14,000 ft. falling to 13,000 ft. Thursday, rising to 14,000 ft. Friday through Sunday highs 74-79 lows 46-48.
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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.