Here is my weekly weather quiz question for the last time. What is “Sublimation”? Sublimation is the transition of a substance from the solid phase directly to the vapor phase, or vice versa, without passing through an intermediate liquid phase. Thus an ice crystal or icicle sublimes under low relative humidity at temperatures below 0°C. The process is analogous to evaporation of a liquid.
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An Upper Level Low Pressure Trough (“U” shape) is enhancing frontal movement. The graphics for days 1-3 show a cold front pushing through Sunday. The graphics for days 3-7 Tuesday through Saturday show complex frontal system moving northeastward through the Pacific Northwest Thursday and Friday. Another front will be just offshore next Saturday.
Note: Lane County residents will have to wait until Friday, November 1, 2024, at the earliest for the opening of the fall outdoor burning season. The season is typically scheduled to start on October 1st each year. However, the decision to delay has been jointly made by the Lane County Fire Defense Board and the Oregon Department of Forestry (ODF).
ADVISORIES:
- NONE AT THIS TIME
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:
- Partly cloudy with patchy fog late tonight,
- Mostly sunny and a bit cooler with a slight (20%) chance of rain Sunday afternoon, rain Sunday night,
- Mostly cloudy with AM rain, showers likely (70%) and cooler Monday, mostly cloudy with a slight (20%) chance of evening showers, mostly cloudy with patchy dense fog late at night,
- AM clouds with patchy dense fog, sunny and a bit cooler Tuesday afternoon, then partly cloudy Tuesday night.
- lows 48-38 highs 72-60.
- Mostly sunny and a bit warmer Wednesday, partly cloudy Wednesday night,
- Mostly sunny and a bit warmer with a (40%) chance of rain Thursday, mostly cloudy with a good (50%) chance of rain at night,
- Then mostly cloudy and a bit cooler with rain likely (70%) Friday and Saturday, rain likely (70%) Friday night,
- highs 62-64 cooling to 60 Saturday lows 39-45. (seasonal averages high 63 low 41)
Your College Football Weather Forecast:
Friday October 18th:
Ducks vs Perdue Boilermakers at Ross-ADE Stadium, West Lafayette, Indiana: Game time: 5:00 pm- The Ducks shut out Perdue 35-0.
Saturday October 19th:
Beavers vs UNLV Rebels at Reser Stadium: Game time 7:00 pm- Weather Forecast: Partly cloudy 66 degrees and cooling throughout the game.
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HOME WOOD HEATING ADVISORY:
Eugene & Springfield: GREEN Fireplace and wood stove use permitted.
Oakridge and Westfir: GREEN Fireplace and wood stove use permitted.
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 clear this evening, partly cloudy with patchy fog late tonight,
- Partly cloudy start, mostly cloudy with a slight (20%) chance of rain and a bit cooler Sunday afternoon, mostly cloudy with rain Sunday night,
- Mostly cloudy with AM rain, a good (50%) chance of rain cooler Monday afternoon, a slight (2o%) chance of evening rain, mostly cloudy and colder with patchy fog late at night,
- lows 49-52 cooling to 43 Tuesday night highs 76-64.
- Partly cloudy and a bit warmer Wednesday, mostly clear Wednesday night,
- Partly cloudy with a good (50%) chance of AM rain, mostly cloudy and a bit warmer with a (30%) chance of rain Thursday afternoon, mostly cloudy rain likely (70%) Friday night,
- Then mostly cloudy with rain likely (70%) Saturday.
- highs 68-69 cooling to 64 Friday and Saturday lows 44-48. (seasonal averages high 65 low 44)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Partly cloudy with patchy coastal late evening fog and mostly cloudy late tonight while partly cloudy with inland late evening patchy fog and mostly cloudy with patchy inland fog late tonight,
- Mostly cloudy with a (40%) chance of coastal rain and a bit cooler Sunday afternoon while mostly cloudy with inland AM rain and drizzle and a bit cooler with a slight (20%) chance of inland rain Sunday afternoon, rain Sunday night,
- Mostly cloudy with AM coastal rain likely (70%) and a good (50%) chance of coastal rain and a bit cooler Monday afternoon while a good (50%) chance inland rain and a bit cooler Monday, a slight (20%) chance of evening rain, just mostly cloudy late at night,
- Mostly cloudy start, partly cloudy and a bit warmer Tuesday afternoon, then partly cloudy Tuesday night.
- lows 52-43 highs 67-59 warming to 62 Tuesday.
- Mostly cloudy start, partly cloudy Wednesday, partly cloudy with a slight (20%) chance of rain Wednesday night,
- Partly cloudy with a (30%) chance of AM rain, mostly cloudy and a bit warmer with a (30%) chance of rain Thursday afternoon, mostly cloudy with rain likely (70%) at night,
- Mostly cloudy with rain likely (70%) Friday through Saturday.
- highs 62-64 cooling back to 62 Saturday lows 45-48. (seasonal average high 62 low 46).
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Partly cloudy tonight,
- Mostly sunny and a bit cooler Sunday, rain Sunday night,
- Mostly cloudy with AM rain, showers likely (70%) and cooler Monday afternoon, mostly cloudy with a (30%) chance of evening showers, just mostly cloudy Monday night,
- A mix of clouds and sun and a bit warmer Tuesday, then mostly cloudy Tuesday night.
- lows 42-32 highs 62-45.
- free air freezing level 13,000 ft. tonight, 13,000 ft. falling 12,000 ft. Sunday, snow level 8,000 ft. Sunday night, 6,000 ft. Monday, 5,500 ft. Monday night, free air freezing level 9,000 ft. Tuesday, then 11,000 ft. Tuesday night.
- lows 44-30 warming to 33 Tuesday night highs 62-44 warming to 49 Tuesday.
- Mostly sunny and a bit warmer Wednesday, partly cloudy in the evening, mostly cloudy late Wednesday night,
- Mostly sunny with a slight (20%) chance of rain and snow Thursday, mostly cloudy with a good (50%) chance of rain at night,
- Mostly cloudy and cooler with rain likely (70%) Friday, rain likely (70%) Friday night,
- Mostly cloudy and a bit cooler with rain likely (70%) and a slight (20%) chance of snow Saturday.
- free air freezing level 13,000 ft. Wednesday and Wednesday night, then snow level 7,000 ft. Thursday through Saturday.
- highs 57-45 lows 37-34.