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.
_______________
Advisories: NON AT THIS TIME.
________________
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.
__________________
Here are your detailed forecasts. **
_________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Partly cloudy tonight, AM clouds and mostly sunny Tuesday afternoon, mostly clear Tuesday night, AM clouds, sunny and warmer Wednesday, and mostly clear at night lows 48-52 highs 77-86. Mostly sunny and cooling a bit Thursday through Monday and mostly clear at night highs 87-83 lows near 50. (seasonal averages high 81 low 51)
_________________
Forecast for the Umpqua Basin including Roseburg: Clear this evening, mostly cloudy tonight and Tuesday AM, sunny and warmer Tuesday afternoon and Wednesday, and clear Wednesday night lows 50-53 highs 81-88. Sunny and warmer Thursday and cooler Friday, clear Thursday night, and mostly clear Friday night highs 91-81 lows 53-50. Mostly sunny Saturday and Sunday, mostly clear nights, and sunny Monday highs 86-88-83 lows 53-56. (seasonal averages high 85 low 55)
_________________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Clear this evening, mostly cloudy tonight and Tuesday morning, sunny in the afternoon, partly cloudy in the evening and mostly cloudy Tuesday night at the shore and mostly clear inland, and breezy (winds North 15-25 mph decreasing to 10-15 mph late at night) lows near 50 high 65. AM clouds then sunny and warmer Wednesday, afternoon, clear at night, and sunny and cooler Thursday highs 69-62 lows 50. Partly cloudy Thursday night and cooler Friday, mostly clear Friday night lows near 50 high near 60. Mostly sunny Saturday, mostly clear at night and mostly sunny again Sunday highs 67-64 low 48. Partly cloudy Sunday night and Monday low 49 high 65. (seasonal averages high 66 low 52).
_________________
Forecast for the Cascades of Lane County: Partly cloudy, breezy (winds West 15-25 mph gusts to 35 mph at higher elevations then Northwest 5-10 mph late at night) and cooler tonight, a mix of clouds and sun Tuesday, clear at night, and mostly sunny and warmer Wednesday while mostly clear Wednesday night free air freezing level 14,000 ft. rising to 15,000 ft. Wednesday and down to 14,000 ft. Wednesday night lows 42-44 highs 69-76 . Mostly sunny Thursday through Monday, and mostly clear at night free air freezing level 14,000 ft. falling to 13,000 ft. Sunday night and Monday highs 74-79 then back down to 74 lows 44-47.
_________________
**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.