Apr
14.
Here is my weekly weather quiz question for the last time. “What is a “Radiosonde?” Here is the correct answer. A Radiosonde is an instrument that is carried aloft by a balloon to send back information on atmospheric temperature, pressure and humidity by means of a small, expendable radio transmitter. Radiosondes can be tracked by radar, radio direction finding, or navigation systems (such as the satellite Global Positioning System) to obtain wind data.
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An Upper Lever High Pressure Ridge brings the Pacific Northwest sunshine. The graphics for days 1-3 show a cold front sliding into Oregon Monday. The graphics for days 3-7 Wednesday through Sunday show a frontal system offshore next Saturday moving across the Pacific Northwest Saturday through next Sunday.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 19 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 15 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A WIND ADVISORY IS IN EFFECT FROM 6 PM THIS EVENING UNTIL 11 PM MONDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON AND NORTH CENTRAL OREGON.
- A WIND ADVISORY IS IN EFFECT FROM 8 PM THIS EVENING UNTIL 11 PM MONDAY FOR THE LOWER COLUMBIA BASIN OF OREGON.
- A WIND ADVISORY IS IN EFFECT FROM 5 AM UNTIL 11 PM MONDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
- A WIND ADVISORY IS IN EFFECT FROM 6 PM THIS EVENING UNTIL 11 PM MONDAY FOR THE EASTERN COLUMBIA GORGE OF OREGON AND NORTH CENTRAL OREGON.
- A FLOOD WARNING IS IN EFFECT UNTIL EARLY FRIDAY APRIL 19 TH FOR THE OWYHEE RIVER BELOW THE OWYHEE DAM AFFECTING MALHEUR COUNTY.
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 this evening, mostly cloudy late tonight,
- Mostly cloudy start, a mix of clouds and sun and a bit cooler Monday afternoon, mostly cloudy in the evening, partly cloudy late Monday night,
- Mostly sunny and a bit warmer Tuesday, partly cloudy in the evening, mostly clear late at night,
- Sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- lows 42-34 warming to 37 Wednesday night highs 57-63.
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Sunny and a bit warmer Friday, partly cloudy at night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Saturday, mostly cloudy with a slight (20%) chance of evening rain, partly cloudy with a slight (20%) chance of rain late Saturday night,
- Then mostly sunny and a bit cooler with a slight (20%) chance of rain Sunday.
- highs 70-73 cooling to 66 Sunday lows 40-43. (seasonal averages high 61 low 40)
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EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: LOW (13)
WEEDS: ABSENT (0)
Measured 4.14.24
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 this evening, mostly cloudy late tonight,
- Mostly cloudy with patchy AM fog, partly cloudy and slightly warmer Monday afternoon and evening, mostly cloudy late Monday night,
- AM clouds and patchy fog, partly cloudy and a bit warmer Tuesday afternoon and evening, mostly clear late at night,
- Areas of AM frost, sunny and warmer Wednesday afternoon, then mostly clear late Wednesday night.
- lows 44-37 warming to 40 Wednesday night highs 59-65.
- Mostly sunny and warmer Thursday, partly cloudy in the evening, mostly clear Thursday night,
- Sunny and a bit warmer Friday, partly cloudy with a slight (20%) chance of rain late at night,
- Partly cloudy and a bit cooler with a slight (20%) chance of rain Saturday and Saturday night,
- Then partly cloudy and a bit cooler with a slight (20%) chance of rain Sunday.
- highs 73-76 cooling to 69 Sunday lows 44-46 cooling back to 44 Saturday night. (seasonal averages high 63 low 42)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy tonight,
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Monday afternoon and evening, mostly cloudy with patchy fog late Monday night,
- AM clouds with patchy fog, partly cloudy Tuesday afternoon and evening, clear late at night,
- Some AM clouds, sunny and a bit warmer Wednesday afternoon, then mostly clear Wednesday night.
- lows 44-38 warming to 42 Wednesday night highs 56-60.
- Partly cloudy and a bit warmer Thursday, partly cloudy Thursday night,
- Partly cloudy and a bit warmer Friday, partly cloudy with a slight (20%) chance of rain late at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain Saturday, a slight (20%) chance of rain Saturday night,
- Mostly cloudy with a slight (20%) chance of AM rain, then partly cloudy Sunday afternoon.
- highs 66-60 lows 43-45 cooling back to 43 Saturday night. (seasonal average high 57 low 44)
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with a slight (20%) chance of evening showers, just mostly cloudy late tonight,
- Mostly cloudy with a slight (20%) chance of AM snow showers, a mix of clouds and sun and a bit cooler Monday afternoon, mostly cloudy with a slight (20%) chance of evening rain and showers, just mostly cloudy late Monday night,
- A mix of clouds and sun and a bit warmer Tuesday, partly cloudy in the evening, clear late at night,
- Sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- snow level 6.000 ft. this evening, 3,500 ft. Monday, 4,500 ft. Monday evening, free air freezing level 4,000 ft. rising to 5,000 ft. Tuesday afternoon, 5,000 ft. falling to 3,500 ft. late Tuesday night, 5,500 ft. Wednesday, then 7,000 ft. Wednesday night.
- lows 32-24 warming to 29 Wednesday night highs 43-50.
- Sunny and a bit warmer Thursday, mostly clear Thursday night,
- Sunny and a bit warmer Friday, partly cloudy at night,
- A mix of clouds and sun and a bit cooler with a (30%) chance of rain and snow Saturday, mostly cloudy with a slight (20%) chance of rain and snow Saturday night,
- Then mostly sunny and a bit cooler with a slight (20%) chance of rain and snow Sunday.
- free air freezing level 8,000 ft. Thursday, 9,000 ft. Thursday night through Friday night, then snow level 6,500 ft. Saturday through Sunday.
- highs 57-59 cooling to 55 Sunday lows 32-35.
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