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 Wednesday through Sunday show complex frontal system moving northeastward through the Pacific Northwest Thursday and Friday. Another front will be just offshore Saturday then pushing inland next Sunday.
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:
- A FLOOD WATCH IS IN EFFECT THROUGH THIS EVENING FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
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 cloudy, maybe a sun peek, with showers and a bit cooler today (0.10 in. of rain possible), mostly cloudy with a good (50%) chance of evening showers (under 0.10 in. of rain possible), just mostly cloudy late tonight,
- AM clouds, mostly sunny and a bit cooler Tuesday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late at night,
- Patchy dense AM fog, a mix of clouds and sun and a bit warmer Wednesday afternoon, then partly cloudy Wednesday night.
- highs 72-60 lows 40-38.
- Mostly sunny and a bit warmer with a slight (20%) chance of showers Thursday, mostly cloudy with a good (50%) chance of showers Thursday night,
- Mostly cloudy and a bit cooler with a good (50%) chance of Friday and at night,
- Mostly cloudy with a good (50%) chance of showers Saturday and Saturday night,
- Mostly cloudy and a bit cooler with showers likely (70%) Sunday.
- highs 62-64 cooling to 60 Saturday lows 39-45. (seasonal averages high 62 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: The Beavers lost to UNLV 33-25.
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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 cloudy with a (30%) chance of showers and warmer this afternoon (0.10 in. of rain possible), a slight (2o%) chance of evening showers, mostly cloudy and colder with patchy fog late tonight,
- Mostly cloudy start, partly cloudy and a bit warmer Tuesday afternoon and at night,
- Partly cloudy and a bit warmer Wednesday, partly cloudy Wednesday night.
- highs 64-68 lows 44-42 warming back to 44 Wednesday night.
- Partly cloudy and a bit warmer with a slight (20%) chance of rain Thursday afternoon, mostly cloudy with a (30%) chance of rain Thursday night,
- Mostly cloudy and cooler with a good (50%) chance of rain Friday, a (40%) chance of rain at night,
- Mostly cloudy and a bit warmer with a good (50%) chance of rain Saturday, a (40%) chance of rain Saturday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday.
- highs 68-69 cooling to 64 Friday and Saturday lows 44-48. (seasonal averages high 64 low 44)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a good (50%) chance of AM coastal showers and partly cloudy with a good (50%) chance of coastal showers and cooler this afternoon while a mostly cloudy with a good (50%) chance of AM inland showers and inland showers likely (70%) and cooler this afternoon (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of evening coastal showers, just mostly cloudy late tonight,
- Mostly cloudy start, partly cloudy and a bit warmer Tuesday afternoon, partly cloudy in the evening, mostly cloudy late at night,
- Partly cloudy and a bit cooler Wednesday, then partly cloudy Wednesday night.
- highs 59-62 cooling to 59 Tuesday lows 44-43 warming to 47 Wednesday night.
- Partly cloudy with a slight (20%) chance of AM rain, mostly cloudy and a bit warmer with a (30%) chance of rain Thursday afternoon, mostly cloudy with rain likely (70%) Thursday night,
- Mostly cloudy with rain likely (70%) Friday, a good (50%) chance of rain at night,
- Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) and a bit cooler Saturday afternoon, a good (50%) chance of rain Saturday night,
- Mostly cloudy with a good (50%) chance of AM rain, then rain likely (70%) and a bit cooler Sunday afternoon.
- highs 63-58 lows 54-48. (seasonal average high 62 low 46).
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly cloudy with AM showers, a mix of clouds and sun and a bit cooler cooler with a good (50%) chance of showers Monday afternoon (0.25 in. of rain possible), evening rain and snow showers likely (70%) (under 0.10 in. of rain possible), just mostly cloudy late Monday night,
- AM clouds, mostly sunny and a bit warmer Tuesday, mostly cloudy late Tuesday night,
- Mostly sunny and a bit warmer Wednesday, then partly cloudy Wednesday night.
- highs 43-59 lows 29-38.
- snow level 8,000 ft. tonight, 6,000 ft. Monday, 4,500 ft. Monday night, free air freezing level 7,500 ft. rising to 8,000 ft. Tuesday afternoon, 9,000 ft. rising to 10,000 ft. late Tuesday night , then 10,000 ft. Wednesday and Wednesday night.
- lows 38-29 warming to 38 Wednesday night highs 62-44 warming to 49 Tuesday.
- Mostly sunny and a bit warmer Thursday, becoming mostly cloudy with a good (50%) chance of showers Thursday night,
- Mostly cloudy and cooler with a good (50%) chance of showers Friday, a good (50%) of showers at night,
- A mix of clouds and sun and a bit warmer with a good (50%) chance of rain Saturday, mostly cloudy with a good (50%) chance of showers Saturday night,
- Then mostly cloudy and a bit cooler with showers likely (70%) Sunday.
- free air freezing level 12,000 ft. Thursday, snow level 7,500 ft. Thursday night through Friday night, 8,000 ft. Saturday and Saturday night, then 7,500 ft. Sunday.
- highs 60-50 warming to 52 Saturday cooling to 48 Sunday lows near 35.