Apr
13.
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.
__________
An Upper Lever High Pressure Ridge brings the Pacific Northwest sunshine. The graphics for days 1-3 show a frontal system 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.
________________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 42 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 21 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 42 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
_______________
ADVISORIES:
- 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.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Mostly sunny with a slight (20%) chance of AM showers, mostly sunny and a bit warmer this afternoon, 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 at night,
- A mix of clouds and sun and a bit warmer Tuesday, then partly cloudy Tuesday night.
- highs 63-59 warming to 60 Tuesday lows 42-38.
- Sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
- Sunny and a bit warmer Friday, mostly clear Friday night,
- Then mostly sunny and a bit cooler Saturday.
- highs 66-75 cooling to 73 Saturday lows 39-44. (seasonal averages high 61 low 40)
__________
EUGENE-SPRINGFIELD POLLEN COUNT:
GRASS: ABSENT (0)
TREES: MODERATE (77)
WEEDS: ABSENT (0)
Measured 4.13.24
Data courtesy of Oregon Allergy Associates.
__________
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)
________________
Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with a (30%) chance of showers today (under 0.10 in. of rain possible), just mostly cloudy tonight,
- Mostly cloudy start, partly cloudy and a bit warmer Monday afternoon, partly cloudy in the evening, mostly cloudy late at night,
- AM clouds, partly cloudy and a bit warmer Tuesday afternoon, then partly cloudy Tuesday night.
- highs 59-63 lows 44-42.
- Partly cloudy and a bit warmer Wednesday, partly cloudy in the evening, mostly clear late Wednesday night,
- Sunny start, partly cloudy and warmer Thursday, mostly clear at night,
- Mostly sunny and a bit warmer Friday, mostly clear Friday night,
- Then partly cloudy and a bit cooler Saturday.
- highs 69-79 cooling to 75 Saturday lows 43-48. (seasonal averages high 63 low 42)
____________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a (30%) chance of AM showers, just mostly cloudy and a bit cooler this afternoon and tonight,
- Mostly cloudy start, partly cloudy and a bit warmer Monday afternoon and evening, mostly cloudy at night,
- AM clouds, partly cloudy and a bit warmer Tuesday afternoon, mostly cloudy in the evening, then partly cloudy late Tuesday night.
- highs 55-57 lows 44-42.
- Partly cloudy and a bit warmer Wednesday, partly cloudy Wednesday night,
- Mostly sunny and a bit warmer Thursday, partly cloudy at night,
- Partly cloudy Friday and Friday night,
- Partly cloudy with a slight (20%) chance of AM rain, then just partly cloudy and a bit cooler Saturday afternoon.
- highs 60-67 cooling to 63 Saturday lows 43-46. (seasonal average high 56 low 44)
__________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with a (30%) chance of AM showers and a slight (20%) chance of thunderstorms, cooler with a slight (20%) chance of showers this afternoon (under 0.10 in. of rain possible, more in storms with AM gusty winds and small hail possible), a good (50%) chance of evening showers, a slight (20%) chance of evening showers, just mostly cloudy late tonight,
- Mostly cloudy with a slight (20%) chance of AM snow showers, mostly sunny with a slight (20%) chance of snow showers and a bit cooler Monday afternoon, a slight (20%) chance of evening showers, mostly cloudy with a slight (20%) chance of snow snow showers at night,
- A mix of clouds and sun and a bit warmer Tuesday, mostly cloudy in the evening, then partly cloudy late Tuesday night.
- snow level 7,000 ft. today, 6.000 ft. this evening, 3,500 ft. Monday and Monday night, free air freezing level 6,000 ft. Tuesday, then 7,000 ft. Tuesday night.
- highs 45-48 lows 32-29 warming back to 32 Tuesday night.
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Sunny and a bit warmer Thursday, partly cloudy in the evening, mostly clear late at night,
- Sunny and a bit warmer Friday, mostly clear Friday night,
- Then mostly cloudy with a slight (20%) chance of rain and snow showers Saturday.
- free air freezing level 8,000 ft. Wednesday, 9,000 ft. Wednesday night and Thursday, 10,000 ft. Thursday night and Friday, then snow level 6,500 ft. Saturday.
- highs 53-62 lows 33-37.
_______________
For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com