Apr
07.
_______________
An upper air trough of low pressure (“U” shape) is moving South through Oregon. It has brought in even more rain and cool temperatures today with falling mountain snow levels. There is a chance of thunderstorms, but more often we just end up with small hail without the thunderstorms. After a break Friday another frontal system should be moving in Saturday night and Sunday morning.
________________
Advisories: A FROST ADVISORY IS IN EFFECT FROM 3 AM UNTIL 9 AM FRIDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST, AND CENTRAL DOUGLAS COUNTY. A FREEZE WARNING IS IN EFFECT FROM 3 AM UNTIL 9 AM FRIDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
________________
Here are your detailed forecasts. **
_________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: A mix of clouds and sun with a (40%) chance of showers today and a slight (20%) chance of afternoon thunderstorms (snow level 1,200 ft. in the afternoon, 0.10 in. of rain possible, more in thunderstorms), mostly cloudy with a (30%) chance of showers this evening, patchy fog late at night, AM clouds and fog, partly cloudy Friday afternoon, partly cloudy Friday night, mostly cloudy with a (30%) chance of rain Saturday, and rain likely (60%) Saturday night highs 50-56 lows 30-36. Mostly cloudy with rain likely (60%) Sunday and Sunday night, mostly cloudy with a (40%) chance of showers Monday through Tuesday night, then a (40%) chance of rain Wednesday highs 58-50 warming to 59 by Wednesday lows 42-33 rising to near 40 Wednesday. (seasonal averages high 59 low 38)
_______________
Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with rain and snow showers with a slight (20%) chance of afternoon thunderstorms (snow level 500 ft. rising to 2,000 ft., small hail possible), a good (50%) chance of rain and snow showers this evening with areas of frost late at night (evening snow level 1,500 ft.), partly cloudy with patchy AM frost Friday, mostly cloudy Friday night, mostly cloudy with a (40%) chance of rain and snow Saturday AM, a slight (20%) chance of afternoon rain (snow level 2,000 ft. rising to 3,500 ft.), and a good (50%) chance of rain Saturday night highs 49-55 lows 33-43. Mostly cloudy with rain likely (60%) Sunday, evening rain , rain and snow late Sunday night and colder, rain and snow showers likely (60%) Monday, a good (50%) chance of showers Tuesday night, then showers likely (60%) Wednesday highs 60-52 warming to near 60 Wednesday lows 38-33 rising to 42 Tuesday night. (seasonal averages high 63 low 40)
_______________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy with AM coastal showers likely (60%) and isolated thunderstorms today with AM snow showers likely (60%) inland, then showers likely (60%) with isolated thunderstorms this afternoon (snow level 1,000 ft. rising to 1,500 ft. in the afternoon), a slight (20%) chance of evening showers, mostly cloudy tonight with areas of frost late tonight and Friday AM, partly cloudy in the afternoon, mostly cloudy Friday night, a good (50%) chance of rain Saturday, rain likely (60%) Saturday night highs 48-53 lows 35-45. Mostly cloudy with rain and breezy Sunday, rain Sunday night, showers likely (60%) Monday, then mostly cloudy with a good (50%) chance of showers Monday night through Tuesday night, then showers likely (60%) Wednesday highs from 52-55 lows 37-44. (seasonal averages high 57 low 42).
_________________
Forecast for the Cascades of Lane County: Mostly cloudy with showers likely (60%) today (1 in. of snow possible), mostly cloudy with a (40%) chance of snow showers this evening, a slight (20%) chance of snow showers at night, a mix of clouds and sun Friday, partly cloudy with a slight (20%) chance of showers Friday night, snow level at the surface today and tonight, free air freezing level 3,500 ft. Friday afternoon, and snow level 3,500 ft. Friday night highs 30-42 lows 15-20. Mostly cloudy with a good (50%) chance of snow Saturday, then a (40%) chance of snow and rain Saturday night, rain and snow Sunday and Sunday night, cloudy with snow showers likely (60%) Monday and Monday night, a good (50%) chance of snow showers Tuesday, mostly cloudy with a good (50%) chance of rain and snow showers Tuesday night, then a good (50%) chance of snow and rain Wednesday snow level 4,500 ft. Saturday, 5,000 ft. Saturday night and Sunday, 3,000 ft. Sunday night, at the surface Monday and Monday night, 3,000 ft. Tuesday, then 3,500 ft. Tuesday night and Wednesday highs 44-25 lows 28-20.
_________________
**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.