Jan
07.
Here is my new weekly weather quiz question. What is an “Abutment?”
An Upper Level High Pressure Ridge (“Arch” shape) has taken over to bring sunshine and dry weather to the Pacific Northwest. The graphics for days 1-3 show no frontal activity through the period. The graphics for days 3-7 Saturday through Wednesday show the frontal activity through the period.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 73 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 75 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 56 in the Moderate category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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ADVISORIES:
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL NOON FRIDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL NOON FRIDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 11 AM MST FRIDAY FOR HARNEY COUNTY, BAKER COUNTY, MALHEUR COUNTY, AND THE OREGON LOWER TREASURE VALLEY.
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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 warmer today, mostly clear with patchy dense evening fog, partly cloudy with patchy dense fog late tonight,
- Patchy AM dense fog, mostly sunny and a bit cooler Thursday afternoon, mostly cloudy with a slight (20%) chance of evening rain, patchy dense fog and with rain late at night,
- Mostly cloudy and a bit warmer with rain Friday, partly cloudy with a (40%) chance of Friday night,
- highs 49-46 warming to 52 Friday lows 34-38 cooling to 36 Friday night. .
- Mostly cloudy start, a mix of clouds and sun and a bit cooler Saturday afternoon, partly cloudy in the evening, mostly cloudy late Saturday night,
- A mix of clouds and sun and a bit cooler Sunday, partly cloudy at night,
- Mostly sunny and a bit cooler Monday, mostly clear in the evening, partly cloudy late Monday night,
- Then mostly sunny and a bit warmer Tuesday.
- highs 48-45 warming to 47 Tuesday lows 34-32. (seasonal averages high 47 low 35)
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HOME WOOD HEATING ADVISORY:
Eugene & Springfield: GREEN – The burning wood is allowed.
Oakridge and Westfir: GREEN – The burning wood is allowed.
The use of pellet stoves is always allowed.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Forecast for the Umpqua Valley including Roseburg:,
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer this afternoon, mostly clear with patchy evening fog, partly cloudy with patchy fog late tonight,
- Partly cloudy with patchy AM fog, partly cloudy and a bit warmer Thursday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog and a slight (20%) chance of rain late at night,
- Mostly cloudy with patchy AM fog, mostly cloudy and a bit cooler with rain Friday, then a slight (20%) of showers Friday night,
- highs 53-55 cooling to 52 Friday lows 37-42 cooling to 38 Friday night.
- Partly cloudy and a bit cooler Saturday, partly cloudy Saturday night,
- Partly cloudy Sunday, mostly clear in the evening, partly cloudy Sunday night,
- Some AM clouds, sunny and a bit warmer Monday afternoon, mostly clear in the evening, partly cloudy Monday night.
- Then partly cloudy and a bit warmer Tuesday.
- highs 47-52 lows near 34. (seasonal averages high 49 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with AM patchy fog, partly cloudy and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy with patchy fog and a slight (20%) chance of rain late tonight,
- Mostly cloudy with patchy AM fog, sunny and a bit warmer Thursday afternoon, mostly cloudy with patchy fog and a slight (20%) chance of rain late at night,
- Mostly cloudy with patchy AM fog and rain, rain likely (70%) and a bit cooler Friday afternoon, mostly cloudy with a slight (20%) chance of showers and colder Friday night.
- highs 60-62 cooling to 55 Friday lows 40-43 cooling to 39 Friday night.
- Partly cloudy and a bit cooler Saturday, partly cloudy Saturday night,
- Mostly sunny and a bit warmer Sunday, mostly clear at night,
- Mostly sunny Monday, mostly clear Monday night,
- Then partly cloudy and a bit warmer Tuesday.
- highs 52-55 lows 36-34 warming back to 36 Monday night (seasonal averages high 53 low 41)
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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 warmer today, mostly clear tonight,
- Sunny Thursday, partly cloudy in the evening, mostly cloudy with rain likely (70%) late at night,
- Mostly cloudy and a bit cooler with rain Friday, mostly cloudy with a good (50%) chance of rain and snow showers Friday night.
- free air freezing level 10,000 ft. rising to 11,000 ft. this afternoon, 11,000 ft. tonight, 12,000 ft. Thursday , and snow level above 8,000 ft. Thursday night, 6,000 ft. Friday, then 3,500 ft. Friday night.
- highs 43-36 low 28-32 cooling to 23 Friday night.
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of snow showers Saturday, partly cloudy Saturday night,
- Mostly sunny and a bit warmer Sunday, mostly clear at night,
- Sunny and a bit warmer Monday, mostly clear Monday night,
- Then sunny Tuesday.
- snow level 2,500 ft. Saturday, free air freezing level 4,000 ft. Saturday night, 4,000 ft. Sunday, 4,500 ft. Sunday night, 5,000 ft. Monday, then 7,500 ft. Monday night and Tuesday.
- highs 32-40 lows 19-23.