Feb
19.
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’s moving 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 27 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 26 in the Good 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 FROM 10 PM TONIGHT UNTIL NOON TUESDAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A WIND ADVISORY IS IN EFFECT UNTIL 7 PM TODAY FOR JACKSON COUNTY.
- A WIND ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE 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:
- Mostly cloudy with evening showers and a slight (20%) chance of thunderstorms, a good (50%) of showers late tonight (0.10 in. of rain possible, more in storms),
- Mostly cloudy with a slight (20%) chance of AM showers, a bit warmer with a good (50%) chance of showers with a slight (20%) chance of thunderstorms Tuesday afternoon (0.10 in. of rain possible, more in storms) evening showers likely (70%) with a slight (20%) chance of thunderstorms, and showers late Tuesday night (0.10 in. of rain possible, more in storms),
- Mostly cloudy and a bit cooler with showers Wednesday (0.10 in. of rain possible, more in storms), a (40%) chance of evening showers, just partly cloudy late at night (under 0.10 in. of rain possible, more in storms),
- A mix of clouds and sun and a bit warmer Thursday, then partly cloudy Thursday night.
- lows 44-39 highs 58-54 warming to 56 Thursday.
- Partly cloudy Friday and Friday night,
- Some AM clouds, sunny and a bit warmer Saturday afternoon, partly cloudy at night,
- Mostly cloudy and a bit cooler with rain likely (70%) Sunday, showers Sunday night,
- Then mostly cloudy and a bit cooler with showers Monday.
- highs 56-58 cooling to 46 Monday lows near 38. (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 with early evening showers likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of showers with a slight (20%) chance of thunderstorms late tonight (under 0.10 in. of rain possible),
- Mostly cloudy with a (30%) chance of rain Tuesday, a good (50%) chance of evening rain, rain likely (70%) late Tuesday night (under 0.10 in. of rain possible),
- Mostly cloudy with rain a bit cooler Wednesday (0.10 in. of rain possible), a (30%) chance of evening rain, just partly cloudy late at night (under 0.10 in. of rain possible),
- Patchy AM fog, mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday afternoon, then a slight (20%) chance of showers Thursday night.
- lows 45-40 warming to 43 Thursday night highs 58-55 warming to 59 Thursday.
- Mostly cloudy with a slight (20%) chance of AM showers, just mostly cloudy and a bit warmer Friday afternoon, mostly cloudy with patchy fog Friday night,
- Some AM clouds with patchy fog, sunny Saturday afternoon, partly cloudy with a slight (20%) chance of rain late at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday, evening rain, rain and snow late Sunday night,
- Then mostly cloudy and a bit cooler rain and snow Monday.
- highs 60-47 lows 42-39 (seasonal average high 55 low 38)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with evening coastal showers likely (70%) with a slight (20%) chance of thunderstorms while inland evening showers and a slight (20%) chance of thunderstorms, rain likely (70%) late tonight (0.10 in. of rain possible),
- Mostly cloudy with a good (50%) chance of AM coastal rain and coastal rain likely (70%) a bit warmer with a slight (20%) chance of coastal rain thunderstorms while mostly cloudy and a bit warmer with a (40%) chance of inland rain Tuesday (0.25 in. of rain possible) and breezy (Wind: S 15-25 mph), coastal showers with a slight (20%) chance of thunderstorms late at night while inland evening rain likely (70%) with inland rain late Tuesday night (0.25 in. of rain possible) and breezy (Wind: S 15-25 mph decreasing to S 10-15 mph late at night),
- Mostly cloudy with AM coastal rain likely (70%) with a slight (20%) chance of thunderstorms and coastal rain likely (70%) in the afternoon while inland AM rain and a good (50%) chance of rain Wednesday afternoon (0.10 in. of rain possible), a (30%) chance of evening coastal rain while a (40%) chance of inland evening rain and just partly cloudy inland at night while mostly cloudy at the shore Wednesday night (under 0.10 in. of rain possible),,
- Patchy AM fog, mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday afternoon, mostly cloudy with a (%) chance of showers Thursday night.
- lows 46-42 warming to 44 Thursday night highs 57-60.
- Mostly cloudy with a slight (20%) chance of AM showers, mostly cloudy and a bit cooler Friday afternoon, mostly cloudy with patchy fog Friday night,
- Some AM clouds with patchy fog, sunny Saturday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of rain Saturday night,
- Mostly cloudy and a bit cooler with a (40%) chance of rain Sunday, rain Sunday night,
- Then mostly cloudy and a bit cooler with rain Monday.
- highs 59-50 lows 43-40. (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 a good (50%) chance of evening showers and partly cloudy with a good (50%) of showers tonight with a (40%) chance of snow showers late at night (under 0.10 in. of rain possible),
- A mix of clouds and sun with a good (50%) chance of rain and snow showers and a bit warmer Tuesday (under 0.10 in. of rain possible), mostly cloudy with a good (50%) chance of rain and snow showers Tuesday night (under 0.10 in. of rain possible, 1 in. of snow possible),
- Mostly cloudy and a bit cooler with rain and snow showers Wednesday, a good (50%) chance of evening rain and snow showers, just partly cloudy at night,
- Partly cloudy and a bit warmer Thursday, then partly cloudy Thursday night.
- snow level 5,000 ft. tonight, 4,500 ft. Tuesday and Tuesday night, 4,000 ft. Wednesday and Wednesday night, free air freezing level 5,500 ft. Thursday, then 6,500 ft. Thursday night.
- lows 32-26 warming to 28 Thursday night highs 42-38 warming back to 42 Thursday.
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Friday, just partly cloudy Friday night,
- Mostly sunny and a bit warmer Saturday, partly cloudy at night,
- Mostly cloudy with rain and snow likely (70%) and a bit cooler Sunday, snow and rain showers Sunday night (snow possibly heavy at times),
- Then mostly cloudy and colder with snow showers Monday (snow possibly heavy at times).
- snow level 5,000 ft. Friday, free air freezing level 7,500 ft. Friday night through Saturday night, snow level 4,500 ft. Sunday, 3,000 ft. Sunday night, then 1,500 ft. Monday.
- highs 44-47 cooling to 29 Monday lows 28-24.
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