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 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:
- AN AIR STAGNATION ADVISORY IS IN EFFECT FROM 7 PM TONIGHT 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 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 areas of fog late tonight and Sunday AM, mostly cloudy and a bit warmer in the afternoon, areas of fog, late Sunday night,
- Areas of AM fog, cloudy and a bit warmer Monday afternoon, mostly cloudy with patchy fog and a slight (20%) chance of rain late Monday night,
- Mostly cloudy with a good (50%) chance of AM rain, rain and a bit warmer Tuesday afternoon and evening (heavy at times in the evening), then showers late Tuesday night.
- lows 35-42 cooling back to 35 Tuesday night highs 47-52.
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Wednesday, partly cloudy at night,
- Partly cloudy and a bit cooler Thursday with patchy freezing fog, mostly cloudy with areas of freezing fog Thursday night,
- A mix of clouds and sun with patchy freezing fog and a bit cooler Friday, mostly cloudy with areas of freezing fog at night,
- Then mostly sunny and a bit warmer with patchy freezing fog Saturday.
- highs 43-39 warming to 42 Saturday lows 40-42. (seasonal averages high 45 low 34)
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Forecast for Roseburg:
- Mostly cloudy with areas of fog late tonight and Sunday AM, mostly cloudy and a bit warmer Sunday afternoon and at night, areas of fog late at night,
- Mostly cloudy and a bit cooler with areas of AM and late night fog Monday and Monday night,
- Mostly cloudy and a bit warmer with a (40%) chance of rain Tuesday, then rain and snow showers Tuesday night.
- lows 35-40 cooling to 37 Tuesday night highs 47-44 warming to 50 Tuesday.
- Cloudy with rain and snow showers likely (70%) and a bit cooler Wednesday, just partly cloudy at night,
- Partly cloudy with patchy AM freezing fog, mostly sunny and a bit cooler Thursday afternoon, partly cloudy with areas of freezing fog late Thursday night and Friday AM, partly cloudy Friday night,
- Patchy AM freezing fog, then sunny and a bit warmer Saturday.
- 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 of fog late tonight and Sunday AM, mostly cloudy a bit warmer with Sunday afternoon, areas fog late Sunday night,
- Areas of AM fog and late night fog, mostly cloudy and a bit warmer Monday and Monday night,
- Cloudy with a slight (20%) chance of AM rain, rain likely (70%) and a bit cooler Tuesday afternoon, showers at night.
- lows 37-44 cooling to 42 Tuesday night highs 52-56 cooling to 54 Tuesday.
- Mostly cloudy with a good (50%) chance of showers and a bit cooler Wednesday, partly cloudy and a bit cooler Wednesday night,
- Mostly sunny and a bit warmer Thursday, mostly clear at night,
- Just partly cloudy and a bit warmer Friday and Friday night,
- Then sunny and a bit warmer Saturday.
- highs 46-54 lows 32-35. (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 a slight (20%) chance of rain Sunday afternoon and at night,
- Mostly cloudy and a bit warmer with slight (20%) chance of AM rain Monday, just mostly cloudy Monday night,
- A slight (20%) chance of AM snow and rain, then mostly cloudy Tuesday afternoon and at night.
- snow level 4,000 ft. rising to 7,000 ft. late tonight, 7,500 ft. Sunday afternoon, 6,000 ft. late Sunday night, 5,500 ft. Monday, free air freezing level 5,000 ft. Monday night, snow level 5,000 ft. Tuesday, then 4,500 ft. falling to 2,500 ft. Tuesday night.
- lows 26-30 cooling to 22 Tuesday night highs 40-42.
- Mostly cloudy and a bit cooler with snow showers Wednesday, just partly cloudy Wednesday night,
- Partly cloudy and a bit warmer Thursday through Friday night,
- Then mostly sunny and a bit warmer Saturday.
- snow level at the surface Wednesday, free air freezing level at the surface Wednesday night and Thursday, 4,000 ft. Thursday night, 5,500 ft. Friday, 5,000 ft. Friday night, then 4,000 ft. Saturday.
- highs 24-36 lows 18-22.
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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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