May
31.
Here is my weekly weather quiz question for the last time. “What is a “Rocketsonde?” Here is the correct answer. A Rocketsonde is type of radiosonde that is shot into the atmosphere by a rocket, allowing it to collect data during its parachute descent from a higher position in the atmosphere than a balloon could reach. Radiosondes are launched into the sky by helium weather balloons.
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An Upper Level High Pressure Ridge (“Arch” shape ) is approaching the West Coast. The graphics for days 1-3 show no frontal systems approaching the Pacific Northwest until Sunday. The graphics for days 3-7 Tuesday through Saturday show a cold front that will be moving through Oregon Wednesday and another front to our northwest next Saturday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 43 in the Good category measuring Ozone.
Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 18 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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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:
- A mix of clouds and sun and a bit cooler today, mostly cloudy with a (40%) chance of rain late tonight,
- Mostly cloudy with a good (50%) chance of AM rain, rain and a bit warmer Sunday afternoon (under 0.10 in. of rain possible), rain at night (1.00 in. of rain possible),
- Mostly cloudy with rain Monday, then a slight (20%) chance of rain Monday night.
- high 73-66 lows 53-56 cooling to 50 Monday night .
- A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night,
- Mostly sunny and a bit warmer Wednesday, mostly clear at night,
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Then mostly sunny and a bit warmer Friday.
- highs 73-85 lows 52-54. (seasonal averages high 71 low 46)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: HIGH VERY (361)
TREES: MODERATE (25)
WEEDS: LOW (5)
Measured 5.31.24
Data courtesy of Oregon Allergy Associates.
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Home Wood Heating Advisory:
Eugene-Springfield: GREEN- Burning wood in wood stoves or fireplaces is allowed.
Oakridge: GREEN- Burning wood in wood stoves or fireplaces is allowed.
*Pellet stoves can be used anytime since they don’t produce the particulate smoke.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Forecast for the Umpqua Valley including Roseburg:
- Partly cloudy start, mostly cloudy and a bit cooler this afternoon and tonight,
- Mostly cloudy and a bit cooler with a (30%) chance of rain Sunday (under 0.10 in. of rain possible), rain at night (0.50 in. of rain possible),
- Mostly cloudy with AM rain, a good (50%) chance of showers and a bit cooler Monday afternoon, then a slight (20%) chance of showers Monday night.
- highs 77-67 lows 54-59 cooling to 52 Monday night.
- Partly cloudy and warmer with a slight (20%) chance of showers Tuesday afternoon, mostly clear in the evening, partly cloudy late Tuesday night,
- Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
- Then partly cloudy and a bit warmer Friday.
- highs 68-89 lows 50-57. (seasonal average high 73 low 50)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Patchy AM and late night fog, mostly cloudy this afternoon and tonight,
- Patchy AM fog and a good (50%) chance of rain, rain likely (70%) and a bit cooler Sunday afternoon (0.10 in. of rain possible), rain at night (1.00 in. of rain possible),
- Mostly cloudy with AM rain, a good (50%) chance of rain and a bit cooler Monday afternoon, then just mostly cloudy Monday night.
- highs 64-62 lows 50-52 cooling to 49 Monday night.
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday, partly cloudy in the evening, mostly cloudy late Tuesday night,
- Partly cloudy and a bit cooler Wednesday, partly cloudy at night,
- Partly cloudy and a bit warmer Thursday, partly cloudy Thursday night,
- Then partly cloudy and a bit cooler Friday.
- highs 70-72 cooling back to 70 Friday lows 50-48. (seasonal average high 62 low 50)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- A mix of clouds and sun and a bit cooler today, mostly cloudy with a slight (20%) chance of rain tonight,
- Mostly cloudy with rain and a bit cooler Sunday, rain at night,
- Mostly cloudy and a bit cooler with rain Monday, then a (50%) chance of showers Monday night.
- free air freezing level 11,000 ft. this afternoon, snow level 7,500 ft. tonight, above 8,000 ft. Sunday night through Monday night.
- highs 60-50 lows 42-45 cooling to 38 Monday night.
- Mostly sunny and a bit warmer with a slight (20%) chance of rain Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night,
- Sunny and warmer Wednesday, mostly clear at night,
- Mostly sunny and a bit warmer Thursday, partly cloudy with a slight (20%) chance of showers Thursday night,
- Then mostly sunny and a bit cooler with a slight (20%) chance of showers Friday.
- snow level above 8,000 ft. Tuesday and Tuesday night, free air freezing level 15,000 ft. Wednesday through Thursday, then snow level above 8,000 ft. Thursday night and Friday.
- highs 63-82 cooling to 78 Friday lows 43-52.