May
06.
An Upper Level High Pressure Ridge (“Arch” shape) is building up toward the coast bringing a lengthy dry spell. The graphics for days 1-3 show a weak cold front pushing into the Willamette Valley Wednesday. The graphics for days 3-7 Friday through Tuesday show a complex frontal system moving into Oregon next Monday and Tuesday.
_______________
ADVISORIES:
- NONE AT THIS TIME.
HEALTH ADVISORIES:
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE RIVER.
_______________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 39 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 17 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 26 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
_______________
Eugene-Springfield Area Pollen count:
GRASS: 6 MODERATE
TREES: 36 MODERATE
WEEDS: 0 ABSENT
Measured 5.6.25
Data courtesy of Oregon Allergy Associates
_______________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly clear this evening, partly cloudy late tonight,
- Mostly sunny and cooler Wednesday, mostly cloudy with a slight (20%) chance of evening rain, just partly cloudy late Wednesday night,
- Mostly sunny Thursday, partly cloudy in the evening, mostly clear late at night,
- Sunny and a bit warmer Friday, then partly cloudy Friday night.
- lows 45-40 warming to 43 Friday night highs 69-75.
- A mix of clouds and sun and a bit cooler Saturday, mostly cloudy Saturday night,
- AM clouds with a good (50%) chance of rain, a mix of clouds and sun and cooler with a good (50%) chance of rain Sunday afternoon, mostly cloudy with rain likely (70%) late at night,
- Mostly cloudy and a bit cooler with rain likely (70%) Monday, a good (50%) chance of rain Monday night,
- Then a mix of clouds and sun with a good (50%) chance of rain Tuesday.
- highs 73-62 lows 45-43. (seasonal averages high 67 low 43).
_______________
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:
- Mostly clear this evening, partly cloudy late tonight,
- Sunny and cooler Wednesday, partly cloudy late Wednesday night,
- Some AM clouds, sunny and and a bit cooler Thursday afternoon, mostly clear at night,
- Mostly sunny and a bit warmer Friday, then partly cloudy Friday night.
- lows 49-45 warming to 48 Friday night highs 75-80.
- Partly cloudy and a bit cooler Saturday, partly cloudy with a slight (20%) chance of rain late Saturday night,
- Mostly cloudy and cooler with a (30%) chance of rain Sunday, mostly cloudy with a rain rain likely (70%) at night,
- Mostly cloudy and a bit cooler with rain likely (70%) Monday, a good (50%) chance of rain Monday night,
- Then mostly cloudy with a (40%) chance of rain Tuesday.
- highs 78-62 warming to 64 Tuesday lows 48-45. (seasonal averages high 69 low 46).
_______________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Becoming mostly cloudy with patchy inland fog late tonight,
- Mostly cloudy with patchy AM coastal fog, mostly cloudy and a bit cooler Wednesday afternoon, mostly cloudy with patchy coastal fog late Wednesday night,
- Some AM clouds, sunny and a bit warmer Thursday afternoon, mostly clear in the evening, partly cloudy with patchy coastal fog late at night,
- Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, then mostly cloudy with patchy fog late Friday night.
- lows 46-42 warming to 44 Friday night highs 62-64.
- Mostly cloudy start, partly cloudy and a bit cooler Saturday afternoon, mostly cloudy with a slight (20%) chance of rain and patchy fog late Saturday night,
- Mostly cloudy with a (40%) chance of rain and a bit cooler Sunday and in the evening, rain likely (70%) late at night,
- Mostly cloudy with a rain likely (70%) Monday, a (40%) chance of rain Monday night,
- Then mostly cloudy with a (40%) chance of rain Tuesday.
- highs 63-58 warming to 60 Tuesday lows 43-45 cooling to back to 43 Sunday night.
- (seasonal averages high 59 low 47). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly clear tonight,
- Mostly sunny and cooler Wednesday, mostly cloudy with a good (50%) chance of evening rain (under 0.10 in. of rain possible), becoming partly cloudy late Wednesday night,
- Sunny and a bit cooler Thursday, mostly clear at night,
- Sunny and a bit warmer Friday, then partly cloudy Friday night.
- free air freezing level 12,000 ft. tonight, 11,000 ft. Wednesday, snow level above 8,000 ft. Wednesday evening, free air freezing level 10,000 ft. rising to 11,000 ft. Thursday afternoon, 11,000 ft. Thursday night, then 12,000 ft. Friday and Friday night.
- lows 42-35 warming to 37 Thursday night highs 60-68 cooling to 65 Wednesday.
- Mostly sunny and a bit cooler Saturday, partly cloudy with a slight (20%) chance of rain Saturday night,
- A mix of clouds and sun and cooler with a (40%) chance of rain and a slight (20%) chance of snow Sunday, mostly cloudy with rain and snow likely (70%) at night,
- Mostly cloudy and cooler with rain and snow Monday, a good (50%) chance of rain and snow Monday night,
- Then mostly cloudy and a bit cooler with snow likely (70%) and a good (50%) chance of rain Tuesday.
- free air freezing level 11,000 ft. Saturday, snow level 7,500 ft. Saturday night, 6,500 ft. Sunday, 5,500 ft. Sunday night, 5,000 ft. Monday, then 4,500 ft. Monday night and Tuesday.
- highs 63-72 cooling to 60 Friday warming to 68 Friday cooling to 66 Saturday lows 42-40.
_______________