Here is my weekly weather quiz question. What is “Limnology?
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An Upper Level High Pressure Ridge (“Arch” shape) still has a hold on the Pacific Northwest. The graphics for days 1-3 show fronts off the Oregon coast. The graphics for days 3-7 Saturday through next Wednesday show cold fronts moving through Friday Saturday into Sunday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 45 in the good category measuring Ozone.
Oakridge: The Air Quality Index is 15 in the good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 45 in the Good category measuring Ozone.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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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.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Partly cloudy tonight,
- A mix of clouds and sun to start, sunny and cooler Thursday afternoon, mostly clear Thursday night,
- Some AM clouds, mostly sunny and a bit warmer Friday afternoon, mostly clear at night,
- Then partly cloudy and a bit cooler Saturday and Saturday night.
- lows 54-52 warming back to 54 Friday night cooling back to 52 Saturday night highs 77-82 cooling to 79 Saturday.
- A mix of clouds and sun and a bit cooler Sunday, partly cloudy Sunday night,
- Partly cloudy and a bit cooler Monday, partly cloudy at night,
- Partly cloudy and a bit warmer Tuesday, mostly clear Tuesday night,
- Some AM clouds, then mostly sunny and a bit warmer Wednesday afternoon.
- highs 72-69 warming to 73 Wednesday lows 46-44 warming back to 46 Tuesday night (seasonal averages high 69 low 44)
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Home Wood Heating Advisory:
Posted Daily
Eugene-Springfield: GREEN– Burning is Allowed.
Oakridge: GREEN– Burning is Allowed.
*Note: Pellet stoves may be used anytime if they produce no visible emissions.
Data courtesy of Lane Regional Air Protection Agency (LRAPA
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Eugene-Springfield Pollen Count:
Grass Pollen: High (86)
Weeds: Moderate (23)
Tree Pollen: High (299)
Last counted: 5.16.23
Data courtesy of Oregon Allergy Associates.
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Forecast for the Umpqua Valley including Roseburg:
- Mostly clear with patchy evening fog, partly cloudy with areas of fog late tonight,
- Some AM clouds with patchy fog, sunny and cooler Thursday afternoon, mostly clear in the evening, partly cloudy late Thursday night,
- Some AM clouds, sunny Friday afternoon, mostly clear in the evening, becoming mostly cloudy late at night,
- Then mostly cloudy Saturday and Saturday night.
- lows 57-55 warming back to 57 Friday night cooling back to 55 Saturday night highs near 80.
- Mostly cloudy start, partly cloudy and a bit cooler Sunday afternoon, mostly clear Sunday night,
- Some AM clouds, sunny Monday afternoon, mostly clear at night,
- Mostly sunny Tuesday, mostly clear Tuesday night,
- Then mostly sunny and a bit warmer Wednesday.
- highs 73-75 lows 50-47. (seasonal averages high 72 low 48)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with areas of fog late tonight,
- Mostly cloudy with areas of AM fog, partly cloudy and a bit cooler with areas of coastal fog Thursday afternoon, mostly cloudy with areas of coastal fog late Thursday night,
- Mostly cloudy with patchy AM coastal fog while areas of inland AM fog, sunny and a bit warmer Friday afternoon, mostly cloudy at night,
- Then mostly cloudy and a bit cooler Saturday and Saturday night.
- lows 52-49 warming back to 52 Friday night highs 64-66 cooling back too 64 Saturday.
- Mostly cloudy start, partly cloudy and a bit cooler Sunday afternoon, mostly clear in the evening, partly cloudy late Sunday night,
- Mostly sunny and a bit cooler Monday, mostly clear at night,
- Mostly sunny Tuesday, mostly clear Tuesday night,
- Some AM clouds, then sunny Wednesday afternoon.
- highs near 64 lows 47-45 warming back to 47 Wednesday. (seasonal averages high 61 low 48)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Partly cloudy tonight,
- Some AM clouds, mostly sunny and cooler with a slight chance of showers and thunderstorms Thursday afternoon and evening, just partly cloudy late Thursday night,
- Mostly sunny start, partly cloudy and a bit warmer with a (40%) chance of showers and a slight (20%) chance of thunderstorms Friday afternoon and evening, just partly cloudy late Friday night,
- Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Saturday afternoon and evening, then just mostly cloudy late Saturday night.
- free air freezing level 13,000 ft. tonight, snow level above 8,000 ft. Thursday through Saturday night.
- lows near 47 highs 72-75 cooling to 73 Saturday.
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
- Some AM clouds, sunny and a bit cooler Monday afternoon, partly cloudy at night,
- Then mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear Tuesday night,
- snow level above 8,000 ft. Sunday, 7,000 ft. Sunday night, free air freezing level 13,000 ft. Monday and Monday night, 12,000 ft. Tuesday and Tuesday night, then 11,000 ft. Wednesday.
- highs 62-48 warming to 63 Wednesday lows 35-37.