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 next frontal system moving into Oregon Monday. 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 62 in the Moderate category measuring Particulate Matter.
Oakridge: The Air Quality Index is 96 in the Moderate category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 45 in the Good 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:
- AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 8 AM TUESDAY FOR EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- A WINTER STORM WATCH IS IN EFFECT ABOVE 2,000 FT. FROM TUESDAY AFTERNOON THROUGH WEDNESDAY MORNING FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE KLAMATH BASIN, AND NORTHERN AND EASTERN KLAMATH COUNTY.
- 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:
- Mostly cloudy with light (20%) chance rain and areas of fog late tonight and Monday AM, cloudy and a bit warmer with a slight (20%) chance of rain Monday afternoon, mostly cloudy with patchy fog and a good (50%) chance of rain late Monday night (under 0.10 in. of rain possible),
- Mostly cloudy with rain and a bit warmer Tuesday afternoon and evening (0.50 in. of rain possible), showers likely (70%) late Tuesday night (0.50 in. of rain possible),
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Wednesday, then partly cloudy at night.
- lows 35-39 cooling to 25 Wednesday night highs 48-43.
- Partly cloudy and a bit cooler Thursday, mostly cloudy at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of rain and snow Friday (snow level 1,000 ft.) and Friday night (snow level 1,500 ft.),
- Then partly cloudy and a bit cooler Saturday through Sunday.
- highs 43-35 lows 27. (seasonal averages high 45 low 33)
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Forecast for Roseburg:
- Mostly cloudy with areas of fog late tonight and Monday AM, just mostly cloudy and a bit cooler in the afternoon, a slight (20%) chance of rain with patchy fog late Monday night,
- Cloudy with a good (50%) chance of AM rain, rain and a bit warmer Tuesday afternoon (0.50 in. of rain possible), rain and snow showers likely (70%) Tuesday night (0.50 in. of rain possible),
- A good (50%) chance of rain and snow showers and a bit cooler Wednesday, just mostly cloudy at night.
- lows 37-40 cooling back to 37 Tuesday night highs 47-44 warming to 50 Tuesday.
- Mostly cloudy with patchy AM freezing fog, sunny Thursday afternoon, partly cloudy in the evening, mostly cloudy with areas of freezing fog late Thursday night and Friday AM, a slight (20%) chance of rain and snow showers and a bit cooler in the afternoon, a slight (20%) chance of rain and snow showers late Friday night,
- Patchy AM and late night freezing fog, partly cloudy and a bit cooler Saturday through Sunday.
- highs 44-34 warming to 37 Saturday lows 32-29 warming back to 32 Friday night (seasonal averages high 47 low 36)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with areas fog late tonight and Monday AM, mostly cloudy and a bit warmer Monday, a slight (20%) chance of rain with patchy fog late Monday night,
- Cloudy with AM costal rain likely (70%) while a good (50%) chance of inland AM rain, rain (0.75 in. of rain possible) and a bit cooler Tuesday afternoon and windy (Wind: S 10-15 mph increasing to 20-30 mph at the shore), coastal showers at night while inland evening rain with inland rain and snow showers likely (70%) late Tuesday night (0.50 in. of rain possible),
- Mostly cloudy with a good (50%) chance of rain and snow showers and a bit cooler Wednesday, just partly cloudy and a bit cooler Wednesday night.
- lows 40-42 cooling to 32 Wednesday night highs 56-48.
- Sunny and a bit cooler Thursday, partly cloudy at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Friday and Friday night,
- Partly cloudy Saturday AM, sunny and a bit cooler in the afternoon, clear at night,
- Then sunny and a little bit warmer Sunday.
- highs 47-42 lows 33-27. (seasonal averages high 51 low 39)
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Forecast for the Cascades in Lane County:
- Mostly cloudy tonight,
- Mostly cloudy and a bit warmer with slight (20%) chance of rain Monday and Monday night,
- Cloudy with a (30%) chance of AM rain and snow, rain and snow Tuesday afternoon, evening rain and snow, snow showers and colder late at night,
- Mostly cloudy and a bit cooler with snow showers Wednesday, a slight (20%) chance of evening snow showers, just partly cloudy late Wednesday night.
- free air freezing level 9,000 ft. rising to 10,000 ft. late tonight, snow level 5,500 ft. Monday and Monday night, 4,500 ft. Tuesday, 4,500 ft. falling to 2,500 ft. late Tuesday night, at the surface Wednesday, then free air freezing level at the surface Wednesday night.
- lows 29-32 cooling to 14 Wednesday night highs 40-26.
- Partly cloudy and a bit cooler Thursday and Thursday night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of snow Saturday, just mostly cloudy at night,
- Then partly cloudy and a bit warmer Sunday.
- free air freezing level at the surface Thursday, 5,500 ft. Thursday night, snow level at the surface Friday, snow level at the surface Friday night, then free air freezing level at the surface Saturday through Sunday.
- highs 32-16 warming to 22 Sunday lows 19-8.
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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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