An Upper Level High Pressure Ridge (“Arch” shape) will be replacing a short-lived Upper Level Low Pressure Trough (“U shape”) that helped cool our temperatures. The graphics for days 1-3 show the weak cold front that pushed the Pacific Northwest over this weekend. The graphics for days 3-7 Wednesday through Sunday show no frontal systems approaching the Pacific Northwest until next Friday when a cold font slides through.
____________
ADVISORIES:
- A FROST ADVISORY IS IN EFFECT FROM MIDNIGHT MONDAY NIGHT UNTIL 9 AM TUESDAY FOR NORTH OREGON COAST RANGE LOWLANDS, CENTRAL OREGON COAST RANGE LOWLANDS, THE NORTH OREGON COAST RANGE, THE CENTRAL OREGON COAST RANGE, THE LOWER COLUMBIA RIVER, TUALATIN VALLEY, OUTER SOUTHEAST PORTLAND METRO, WEST CENTRAL WILLAMETTE VALLEY, EAST CENTRAL WILLAMETTE VALLEY, THE BENTON COUNTY LOWLANDS, THE LINN COUNTY LOWLANDS, THE LANE COUNTY LOWLANDS, WEST COLUMBIA RIVER GORGE OF OREGON ABOVE 500 FT., UPPER HOOD RIVER VALLEY, CLACKAMAS COUNTY CASCADE FOOTHILLS, CASCADE FOOTHILLS OF OF MARION AND LINN COUNTIES, AND THE LANE COUNTY CASCADE FOOTHILLS.
- A FREEZE WATCH IS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING FOR THE LOWER COLUMBIA BASIN OF OREGON AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Partly cloudy this evening, mostly cloudy late tonight,
- Mostly sunny Monday, mostly clear areas of frost late Monday night,
- AM frost, sunny and a bit warmer Tuesday afternoon, clear at night,
- Sunny and a bit warmer Wednesday, then clear Wednesday night.
- lows 42-35 warming to 40 Wednesday night highs 62-68.
- A mix of clouds and sun Thursday, mostly cloudy with a good (50%) chance of showers Thursday night,
- Mostly cloudy with showers likely and a bit cooler Friday, a good (50%) chance of showers at night,
- Mostly cloudy with a good (50%) chance of AM showers, a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Saturday afternoon mostly cloudy with a (40%) chance of evening showers, partly cloudy with a (4o%) chance of showers late Saturday night,
- Then a mix of clouds and sun and a bit warmer with a (30%) chance of showers Sunday.
- highs 68-59 warming to 63 Sunday lows 46-42. (seasonal averages high 62 low 41).
_______________
HOME WOOD HEATING ADVISORY:
The Eugene & Springfield: GREEN– Fireplace and wood stove used is allowed. Protect air quality by not heating with wood when possible.
Oakridge And Westfir: GREEN– Fireplace and wood stove used is allowed. Protect air quality by not heating with wood when possible.
The use of pellet stoves is always allowed.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
________________
Forecast for the Umpqua Valley including Roseburg:
- Partly cloudy this evening, mostly cloudy late tonight,
- Mostly cloudy start, sunny and a bit warmer Monday, mostly clear with patchy frost late Monday night,
- Patchy AM frost, sunny and a bit warmer Tuesday afternoon, clear at night,
- Sunny and warmer Wednesday, then mostly clear Wednesday night.
- lows 42-38 warming back to 42 Wednesday night highs 67-73.
- Partly cloudy start, mostly cloudy and a bit cooler Thursday afternoon, mostly cloudy with a slight (20%) chance of evening thunderstorms, a (30%) chance of showers late Thursday night,
- Mostly cloudy and cooler with a good (50%) chance of showers Friday, a (40%) chance of showers at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday, a (30%) chance of showers Saturday night,
- Then mostly cloudy and a bit warmer with a (30%) chance of showers Sunday.
- highs 70-60 warming to 66 Sunday lows 44-46 cooling to 43 Friday night. (seasonal averages high 64 low 43).
_______________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy this evening, mostly cloudy with patchy fog late tonight,
- Some AM clouds with patchy fog, sunny and a bit cooler Monday afternoon, mostly clear with patchy coastal fog at night while inland patchy fog and frost late Monday night,
- Patchy AM coastal fog while patchy inland AM frost, sunny and a bit warmer Tuesday afternoon, mostly clear at night,
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night.
- lows 44-39 warming to 42 Wednesday night highs 55-62.
- Mostly cloudy and a bit cooler Thursday, mostly cloudy with a (30%) chance of showers Thursday night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Friday, a (30%) chance of showers at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Saturday, a
(40%) chance of showers Saturday night, - Then mostly cloudy and a bit warmer with a (30%) chance of showers Sunday.
- highs 59-57 warming to 62 Sunday lows 44-42.
- (seasonal averages high 57 low 45). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with a slight (20%) chance of evening rain and snow showers, just mostly cloudy late tonight,
- AM clouds and sun, sunny Monday afternoon, mostly clear Monday night,
- Sunny and a bit warmer Tuesday, the clear at night,
- Sunny and a bit warmer Wednesday, clear Wednesday night.
- free air freezing level 4,000 ft. tonight, 5,500 ft. Monday afternoon, 6,500 ft. falling to 5,500 ft. Monday night, 6,000 ft. Tuesday, 4,500 ft. rising to 6,000 ft. late Tuesday night, 6,500 ft. falling to 6,000 ft. Tuesday night, 7,500 ft. Wednesday, then 9,000 ft. Wednesday night.
- lows 30-28 warming to 34 Wednesday night highs 49-57.
- Mostly sunny and a bit warmer with a slight (20%) chance of showers Thursday, mostly cloudy with showers likely (70%)Thursday night,
- Mostly cloudy and cooler with rain and snow showers likely (70%) Friday, a good (50%) chance of rain and snow showers at night,
- Mostly cloudy and a bit cooler with rain and snow showers likely (70%) Saturday, a good (50%) chance of rain and snow showers Saturday night,
- Then a mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow showers Sunday.
- snow level 6,500 ft. Thursday and Thursday night, 5,500 ft. Friday, 4,500 ft. Friday night, 4,000 ft. Saturday and Saturday night, then 4,500 ft. Sunday.
- highs 59-42waring to 45 Sunday lows 35-29.
.