Check out my latest Eugene Daily News Weather Or Not column What’s the difference? It Can Be Important.
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Here is my weekly weather quiz question for the last time. What is a “Cold Air Funnel“? Here is the correct answer. A Cold Air Funnel is a funnel cloud or (rarely) a small, relatively weak tornado that can develop from a small shower or thunderstorm when the air aloft is unusually cold (hence the name). They are much less violent than other types of tornadoes. 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 blue arrows) has moved closer taking over from the High Pressure and enhancing the chance for precipitation. The graphics for days days 1-3 show the frontal system that moved through Oregon Friday. The graphics for days 3-7 show the complex frontal systems starting to move toward and then across the Pacific Northwest Tuesday through next Thursday.
Note: The overnight air quality in Eugene/Springfield and Oakridge has improved enough for the Home Wood Heating Advisory to be lowered to Yellow.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 104 in the Unhealthy for Sensitive Groups category measuring Particulate Matter.
Oakridge: The Air Quality Index is 53 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 55 in the Moderate category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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Home Wood Heating Advisory:
(Posted Daily)
Eugene-Springfield: YELLOW – Caution Is Advised.
Oakridge: YELLOW – Caution Is Advised.
*Note: Pellet stoves may be used anytime if they produce no visible emissions.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
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ADVISORIES:
- A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson 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:
- AM fog, mostly cloudy and a bit warmer with a slight (20%) chance of rain this afternoon, cloudy with areas of fog and a slight (20%) chance of rain late tonight,
- Areas of AM fog, a slight (20%) chance of rain and a bit warmer Sunday, patchy evening fog, a slight (20%) chance of showers at night,
- Mostly cloudy with areas of AM fog, mostly cloudy and a bit warmer Monday afternoon and Monday night.
- highs 45-50 lows 33-42.
- Cloudy and a bit cooler with a good (50%) chance of rain Tuesday, rain Tuesday night,
- Cloudy and a bit cooler with a good (50%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of showers at night,
- A mix of clouds and sun and a bit cooler Thursday, then partly cloudy Thursday night and Friday.
- highs 52-40 lows 36-27. (seasonal averages high 45 low 34)
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Forecast for Roseburg:
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain this afternoon, areas of fog late tonight,
- Areas of AM fog, mostly cloudy and a bit warmer Sunday, areas of fog at night,
- Mostly cloudy and a bit cooler with areas of AM and late night fog Monday and Monday night.
- highs 43-47 cooling to 42 Monday lows 36-40.
- Mostly cloudy with areas of AM fog, mostly cloudy and a bit warmer with a (30%) chance of rain Tuesday, rain in the evening, rain and snow showers late Tuesday night,
- Mostly cloudy with rain and snow showers likely (70%) and a bit cooler Wednesday, partly cloudy with a slight (20%) chance of rain and snow showers at night,
- Partly cloudy and a bit cooler Thursday, then partly cloudy with areas of freezing fog Thursday night and Friday.
- highs 48-42 lows 36-30. (seasonal averages high 47 low 36)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy this AM, mostly cloudy with slight (20%) chance of afternoon rain, a slight (20%) chance of evening coastal rain, areas of fog late tonight and Sunday AM, mostly cloudy a bit warmer with Sunday afternoon, a slight (20%) chance of evening coastal showers, areas fog late Sunday night,
- Areas of AM fog and late night fog, mostly cloudy and a bit warmer Monday and Monday night.
- highs 49-57 lows 39-43.
- Mostly cloudy with areas of AM fog, mostly cloudy with a (40%) chance of rain and a bit cooler Tuesday afternoon, rain in the evening, showers late Tuesday night,
- Mostly cloudy with a good (50%) chance of showers and a bit cooler Wednesday, partly cloudy and a bit cooler Wednesday night and Thursday, mostly clear at night,
- Then just partly cloudy and a bit warmer Friday.
- highs 56-47 warming to 49 Friday lows 40-35. (seasonal averages high 51 low 39)
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Forecast for the Cascades in Lane County:
- Mostly cloudy and a bit cooler with a slight (20%) chance of snow today, mostly cloudy with a slight (20%) chance of rain and snow tonight,
- Mostly cloudy and a bit warmer with a slight (20%) chance of rain Sunday afternoon, a slight (20%) chance of showers Sunday night,
- Mostly cloudy and a bit warmer with slight (20%) chance of showers Monday, then just mostly cloudy Monday night.
- free air freezing level 4,000 ft. this afternoon, snow level 4,000 ft. tonight, 7,500 ft. Sunday afternoon and Sunday night, 6,500 ft. Monday, then free air freezing level 7,500 ft. Monday night.
- highs 32-42 lows 24-29.
- Mostly cloudy with a slight (20%) chance of rain Tuesday, rain at night,
- Cloudy and a bit cooler with snow showers likely (70%) Wednesday, mostly cloudy with a (30%) chance of snow showers Wednesday night,
- A mix of clouds and sun with a slight (20%) chance of snow showers and a bit warmer Thursday, partly cloudy at night,
- Then partly cloudy and a bit warmer Friday.
- snow level 5,500 ft. Tuesday, 5,000 ft. falling to 3,500 ft. Tuesday night, at the surface Wednesday through Thursday, then free air freezing level 5,000 ft. Thursday night and Friday.
- highs 42-25 warming to 34 Friday lows 22-18.
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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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