Feb
18.
Here is my new weekly weather quiz question. What is a “PIBAL?”
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The Upper Level High Pressure Ridge (“Arch” shape) has moved to the east and will be followed by an Upper Level Low Pressure Trough (“U” shape). The graphics for days 1-3 show low pressure off the California coast that will move northward along the Oregon coast while dragging a cold front behind it. The graphics for days 3-7 Thursday through Monday show active weather with complex frontal systems active over the Pacific Ocean moving toward the Pacific Northwest.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 55 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 57 in the Moderate category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A DENSE FOG ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS.
- A WIND ADVISORY IS IN EFFECT FROM 9 AM UNTIL 7 PM TODAY FOR JACKSON 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:
- Clouds and sun with a good (50%) chance of AM rain, increasing clouds with rain likely (70%) and a bit cooler (under 0.10 in. of rain possible) this afternoon (President’s Day), mostly cloudy with a good (50%) chance of evening rain, a good (50%) of rain tonight (0.10 in. of rain possible),
- Mostly cloudy and a bit warmer with showers likely (70%) Tuesday (under 0.10 in. of rain possible) and at night (under 0.10 in. of rain possible),
- Mostly cloudy and a bit cooler with showers likely (70%) Wednesday, a (40%) chance of evening showers, then partly cloudy with a (40%) chance of showers late Wednesday night.
- highs 54-58 cooling to 55 Wednesday lows 44-39.
- Partly cloudy and a bit warmer Thursday and Friday, partly cloudy both nights,
- Some AM clouds, sunny Saturday afternoon, partly cloudy with a slight (20%) chance of showers Saturday night,
- Then mostly cloudy and a bit cooler with showers Sunday.
- highs 56-57 cooling to 54 Sunday lows 37-39. (seasonal averages high 52 low 35)
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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:
- Mostly cloudy and a bit warmer with a good (50%) chance of rain today (President’s Day)(under 0.10 in. of rain possible), a good (50%) chance of rain late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) Tuesday and in the evening, patchy fog with showers likely (70%) late at night,
- Mostly cloudy with patchy AM fog, showers, a bit cooler Wednesday, patchy fog with a (30%) chance of evening showers, just mostly cloudy with patchy fog late Wednesday night.
- highs 59-56 lows 45-40.
- Patchy AM and late night fog, partly cloudy and a bit warmer Thursday and Thursday night,
- AM clouds with patchy fog, partly cloudy and a bit warmer Friday afternoon, partly cloudy at night,
- Partly cloudy and a bit warmer Saturday, mostly clear with a slight (20%) chance of evening rain, partly cloudy with a slight (20%) chance of rain Saturday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday.
- highs 58-62 cooling to 57 Sunday lows near 42 (seasonal average high 54 low 38)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with AM coastal rain and afternoon coastal rain likely (70%) with a slight (20%) chance of thunderstorms and a bit cooler this afternoon while inland rain likely (70%) this afternoon (President’s Day)(0.10 in. of rain possible), coastal rain likely (70%) with a slight (20%) chance of thunderstorms tonight while inland rain likely (70%) tonight (0.25 in. of rain possible),
- Mostly cloudy and a bit cooler with coastal rain likely (70%) while AM inland likely (70%) and inland rain Tuesday afternoon (0.10 in. of rain possible) and breezy (Wind: S 15-25 mph), evening coastal rain likely (70%) with a slight (20%) chance of thunderstorms and coastal showers likely (70%) with a slight (20%) chance of thunderstorms late at night while inland evening rain with a slight (20%) chance of thunderstorms and inland showers with a slight (20%) chance of thunderstorms late at night (0.10 in. of rain possible),
- Mostly cloudy with AM showers, a good (50%) chance of showers and a bit cooler Wednesday afternoon and evening, then just mostly cloudy Wednesday night.
- highs 59-56 lows 47-42.
- Partly cloudy and a bit warmer Thursday, mostly cloudy, mostly cloudy Thursday night,
- Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy with a slight (20%) chance of rain Friday afternoon, partly cloudy at night,
- Partly cloudy and a bit cooler Saturday and in the evening, mostly cloudy with a slight (20%) chance of rain Saturday night,
- Mostly cloudy with a (30%) chance of AM rain, then rain Sunday night.
- highs 60-56 lows near 42. (seasonal averages high 54 low 41).
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Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with AM rain likely (70%) and snow likely (70%), rain likely (70%) and a bit cooler this afternoon (President’s Day) and this evening (under 0.10 in. of rain possible), a good (50%) of rain late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a good (50%) chance of AM rain and snow showers, rain and snow showers likely (70%) Tuesday afternoon, evening rain and snow showers likely (70%), a good (50%) chance of rain and snow showers late at night,
- Mostly cloudy with rain and snow showers Wednesday, mostly cloudy with a good (50%) chance of evening showers, then partly cloudy with a good (50%) chance of showers late Wednesday night.
- snow level 5,000 ft. today and tonight, then 4,500 ft. Tuesday through Wednesday night.
- highs 42-39 lows 32-27.
- Partly cloudy and a bit warmer Thursday and Friday, partly cloudy both nights,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Saturday, a slight (20%) chance of rain and snow showers Saturday night,
- Then rain and snow showers likely (70%) and a bit cooler Sunday.
- free air freezing level 5,500 ft. Thursday, 6,500 ft. Thursday night, 7,000 ft. Friday, 8,000 ft. Friday night, snow level 4,500 ft. Saturday, 5,000 ft. Saturday night, then 4,500 ft. Sunday.
- highs 42-47 cooling to 43 Sunday lows 26-30.
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