Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/10/the-last-time-this-year-i-hope/
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Here is my weekly weather quiz question for the last time. What is a “Growing Degree Day?” Here is the correct answer. A Growing Degree Day is the number of degrees that the average temperature is above a baseline value. For example, 40 degrees for canning purposes; 45 degree for potatoes; and 50 degrees for sweet corn, snap beans, lima beans, tomatoes, grapes, and field corn. Every degree that the average temperature is above the baseline value becomes a growing degree day. Agricultural related interests use growing degree days to determine planting times. I’ll have a new weekly weather quiz question for you starting Monday. The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs. Good luck.
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An Upper Level Low Pressure Trough (Shaded “U” shape with arrows) is controlling our Fall weather pattern. Much cooler air had moved in from the north. The graphics for days 1-3 show a surface frontal system heading our way for Saturday. The warm front will move in first raising afternoon temperatures then the cold front will follow dropping temperatures again Saturday night. The graphics for days 3-7 more disturbances in our future.
Note: Due to the continued fire danger, the outdoor burning season has been delayed until October 13th. The next update on the burning season will be issued at 7 pm October 12th. Remember, burning is always prohibited within the city of Eugene.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 38 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 9 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
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 rain, showers late tonight (0.25 in. of rain possible),
- Mostly cloudy with a good (50%) of AM showers, warmer with a slight (20%) chance of showers Saturday afternoon (under 0.10 in. of rain possible), partly cloudy and colder with areas of fog late at night and Sunday AM, Partly cloudy and a bit warmer in the afternoon, becoming mostly cloudy with a slight (20%) chance of rain late Sunday night,
- Mostly cloudy with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit warmer with a (40%) chance of showers Monday afternoon (Columbus day), mostly cloudy with a (40%) chance of rain Monday night.
- lows 50-39 warming to 48 Monday night highs 64-66.
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night,
- Partly cloudy and a bit warmer Wednesday, mostly clear with patchy fog at night and Thursday AM, mostly sunny and a bit warmer in the afternoon, mostly clear with areas of fog Thursday night,
- Then mostly sunny and a bit warmer Friday after areas of AM fog.
- highs 65-69 lows 42-37. (seasonal averages high 69 low 43)
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Your College Football Forecast
Saturday October 6th:
Ducks have a bye week.
Beavers vs Washington State at Reser Stadium – Kickoff: 6 pm PDT- Mostly cloudy 62, a slight chance of late afternoon showers, partly cloudy with slow cooling as the game progresses.
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Forecast for Roseburg:
- Mostly cloudy with evening rain, increasing showers late tonight (0.25 in. of rain possible),
- Mostly cloudy with a (40%) chance of scattered showers and warmer Saturday (under 0.10 in. of rain possible), a slight (20%) chance of evening showers, just partly cloudy late Saturday night,
- AM clouds, partly cloudy and a bit warmer Sunday afternoon, partly cloudy with a slight (20%) chance of rain late at night,
- Partly cloudy and a bit warmer with a slight (20%) chance of rain Monday (Columbus Day), mostly cloudy with a (30%) chance of rain Monday night.
- lows 52-44 warming to 52 Monday night highs 65-58.
- Mostly cloudy with a slight (20%) chance of showers and a bit cooler Tuesday, partly cloudy with a slight (20%) chance of showers Tuesday night,
- Partly cloudy and a bit cooler Wednesday, mostly clear at night,
- Mostly sunny and a bit warmer Thursday, mostly clear Thursday night,
- Then mostly sunny Friday.
- highs 62-69 lows near 42. (seasonal averages high 72 low 47)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend,
- Mostly cloudy with evening rain, increasing showers late tonight (0.25 in. of rain possible),
- Mostly cloudy and a bit warmer with a (40%) chance of scattered showers Saturday AM, a (40%) of isolated showers and a bit warmer in the afternoon, (under 0.10 in. of rain possible), just partly cloudy Saturday night,
- Mostly cloudy in the AM, partly cloudy and a bit cooler Sunday afternoon, partly cloudy with a slight (20%) chance of rain at night,
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain Monday (Columbus Day) and in the evening, then partly cloudy with a slight (20%) chance of rain late Monday night.
- lows 54-48 warming to 52 Monday night highs 64-62 warming back to 64 Monday.
- Partly cloudy with a slight (20%) chance of showers and a bit cooler Tuesday, just partly cloudy and colder at night,
- Partly cloudy Wednesday, mostly clear Wednesday night,
- Then mostly sunny and a bit warmer Thursday and Friday (a bit cooler), mostly clear Thursday night.
- highs 62-65 cooling back to 62 Friday lows near 46. (seasonal averages high 63 low 47)
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Forecast for the Cascades in Lane County:
- Mostly cloudy with rain tonight,
- Cloudy with AM showers, a bit warmer with a good (50%) chance of showers Saturday afternoon, mostly cloudy with a slight (20%) chance of evening showers, partly cloudy late Saturday night,
- Partly cloudy and a bit warmer Sunday, partly cloudy with a slight (20%) chance of rain late Sunday night,
- A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Monday (Columbus Day), mostly cloudy with a good (50%) chance of rain Monday night.
- snow level above 7,500 ft. late tonight and Saturday, 6,000 ft. Saturday night, free air freezing level 9,000 ft. rising to 10,000 ft. Sunday afternoon, then snow level above 8,000 ft. late Sunday night through Monday night.
- lows 38-33 warming to 37 Monday night highs 45-52 cooling to 50 Monday.
- A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Tuesday, mostly cloudy with a slight (20%) chance of showers Tuesday night,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday, just partly cloudy at night,
- Partly cloudy and a bit warmer Thursday, mostly clear Thursday night,
- Then mostly sunny and a bit warmer Friday.
- snow level 7,000 ft. Tuesday, 6,000 ft. Tuesday night, 5,500 ft. Wednesday, free air freezing level 7,500 ft. Wednesday night, 7,000 ft. Thursday, 9,000 ft. Thursday night, then 11,000 ft. Friday.
- highs 45-56 lows 30-32.
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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.
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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.
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