Check out my latest Eugene Daily News Weather Or Not column:
http://eugenedailynews.com/2018/01/doesnt-go-boom-bomb/
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Here is my weekly weather quiz question for the last time. What is the “Coriolis Force?” Here is the correct answer. The Coriolis Force is a fictitious force used to account for the apparent deflection of a body in motion with respect to the earth, as seen by an observer on the earth. The deflection (to the right in the Northern Hemisphere) is caused by the rotation of the earth. I’ll have a new weekly wether 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 taken control returning the wet weather. It has slowly moved across the Pacific Northwest. The graphics for days 1-3 show the next frontal system well offshore Sunday morning as a short-lived High Pressure Ridge (Shaded “Arch” shape with blue arrows) decreases the showers for the day today. The graphics for days 3-7 show the next frontal system heading our way Wednesday and another one out over the Pacific Ocean next Friday that will be heading our way.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 5 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 0 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: GREEN – Burning is Allowed.
Oakridge: GREEN – Burning is Allowed.
*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 HIGH WIND WARNING IS IN EFFECT FROM 2 AM UNTIL 10 AM SUNDAY NEAR THE BEACHES AND HEADLANDS FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 6 PM SUNDAY ABOVE 3,500 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
- A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM SUNDAY UNTIL 4 PM SUNDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCDES, ANDTHE SISKIYOU MOUNTAINS.
- A HIGH WIND WARNING IS IN EFFECT FROM 4 AM UNTIL 1 PM SUNDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
- A HIGH WIND WARNING IS IN EFFECT FROM 7 AM UNTIL 7 PM SUNDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
- 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:
- Cloudy with a good (50%) chance of showers and a bit cooler this afternoon (0.10 in. of rain possible) and tonight (0.10 in. of rain possible),
- Mostly cloudy with rain and a bit cooler Sunday and breezy (Wind: S 15-25 mph gusts to 35 mph decreasing to S 10-15 mph gusts to 25 mph), showers likely (70%) Sunday night,
- Cloudy and a bit warmer with a good (50%) chance of showers showers Monday, then a (30%) chance of showers at night.
- highs near 46 lows 40-35.
- Mostly cloudy and a bit cooler with rain likely (70%) Tuesday and at night,
- Rain Wednesday, showers likely (70%) and a bit cooler Wednesday night,
- Cloudy with showers likely (70%) and a bit cooler Thursday and at night,
- Then a bit warmer with a good (50%) chance of showers Friday.
- highs 49-46 lows 39-34. (seasonal averages high 48 low 34)
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Forecast for Roseburg:
- Cloudy with (40%) chance of rain and snow showers and a bit cooler today (snow level 2,000 ft. rising to 2,500 ft.), a slight (20%) chance of evening rain, a (30%) chance of rain and snow late tonight (snow level 3,000 ft.),
- Mostly cloudy with rain and a bit warmer Sunday (snow level 3,000 ft. rising to 3,500 ft.), cloudy with evening showers likely (70%), a good (50%) chance of rain and snow showers late Sunday night (snow level 3,500 ft. falling to 3,000 ft. late at night),
- Mostly cloudy with a (30%) chance of AM rain and snow showers, a slight (20%) chance of showers Monday afternoon (snow level 2,500 ft. rising to 3,000 ft. in the afternoon), a slight (20%) chance of evening rain, then a slight (20%) chance of showers late at night.
- highs 46-49 lows 40-36.
- Mostly cloudy and a bit cooler with a rain likely (70%) Tuesday and Tuesday night,
- Rain and a bit cooler Wednesday, evening rain and snow showers, rain and snow showers likely (70%) and colder late Wednesday night,
- Mostly cloudy with rain and snow showers and a bit cooler Thursday, then rain and snow showers likely (70%) and a bit warmer Thursday night and Friday.
- highs 47-40 warming to 43 Friday lows 42-34. (seasonal averages high 50 low 37)
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Cloudy with coastal showers likely (70%) and a bit cooler this afternoon while a (40%) chance of inland showers, evening rain, coastal rain rain late tonight while inland rain likely (60%) late tonight,
- Mostly cloudy and a bit warmer with rain Sunday and windy (Wind: S 25-35 mph gusts to 50 mph decreasing and shifting SW 10-20 mph in the afternoon), coastal showers likely (70%) while inland evening showers and a good (50%) chance of inland showers late Sunday night.
- Mostly cloudy with AM coastal showers likely (70%) and a good (50%) chance of coastal afternoon showers while a (30%) chance of inland showers and a bit cooler Monday afternoon, a slight (20%) chance of evening rain, then a slight (20%) chance of showers late Monday night.
- highs 49-53 lows 45-42.
- Cloudy with rain Tuesday through Wednesday, a bit cooler with rain and snow showers Wednesday night and Thursday, showers likely (70%) Thursday night,
- Then mostly cloudy and a bit warmer with rain and snow showers likely (70%) Friday.
- highs 52-44 warming to 47 Friday lows 46-39. (seasonal averages high 52 low 40)
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Forecast for the Cascades in Lane County:
- Cloudy with a snow showers likely (70%) today (1 in. of snow possible), mostly cloudy with a slight (20%) chance of evening rain and snow, a slight (20%) chance of snow late tonight,
- Mostly cloudy with AM snow, rain and snow (4-8 in. of snow possible) Sunday afternoon and a bit warmer and breezy (S 15-25 mph gusts to 45 mph), rain and snow showers Sunday night (2 in. of snow possible),
- Mostly cloudy with a good (50%) chance of rain and snow showers Monday (1 in. of snow possible), then mostly cloudy with a (30%) chance of snow showers at night.
- snow level 2,500 ft. today through Sunday, then 3,000 ft. Sunday night and Monday, then 2,500 ft. Monday night.
- highs 32-34 lows 25-28 cooling to 23 Monday night.
- Cloudy with a good (50%) chance of AM snow, a bit warmer with rain and snow likely (70%) Tuesday afternoon and Tuesday night,
- Mostly cloudy with rain and snow and a bit cooler Wednesday, then snow showers and a bit cooler Wednesday night,
- Snow showers likely (70%) and a bit cooler Thursday and at night,
- Then cloudy and a bit warmer with a good (50%) chance of snow showers Friday.
- snow level 3,500 ft. Tuesday, 5,000 ft. Tuesday night through Wednesday night, then at the surface Thursday through Friday.
- highs 38-32 warming to 34 Friday lows 32-24.
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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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