Check out my latest Eugene Daily News Weather Or Not column: Not Much Winter Weather Until Now. What’s going on?
__________
Here is my new weekly weather quiz question. What is “Deep Percolation Loss?” 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.
________________
An Upper Level Low Pressure Trough (Shaded “U” shape with arrows) slides slowly eastward continuing the flow of colder Arctic air coming through Canada into the Northwest. Add that in the moisture that will be moving in and there’s the chance of some more snow. This time it might actually stick on the grounding the valley. The graphics for days 1-3 show the next frontal system that will be offshore Wednesday. The graphics for days 3-7 show a frontal system that will slide along the Pacific Northwest coast Sunday night through Monday.
Note: With the moisture remaining on the roadways and the cold temperatures you need to watch out for slippery road conditions.
________________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 13 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 13 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA)
__________________
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)
________________
Advisories:
- A FREEZE WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
- 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.
________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:,
- Partly cloudy and a bit cooler today (Presidents’ Day), partly cloudy and cold tonight,
- Mostly cloudy with a slight (20%) chance of AM snow, a bit warmer with a good (50%) chance of rain and snow Tuesday afternoon (under 0.10 in. of rain possible, 1 in. of snow possible), rain and snow at night (under 0.10 in. of rain possible, 2 in. of snow possible),
- A mix of clouds and sun Wednesday, mostly cloudy with a slight (20%) chance of evening rain and snow showers, a (30%) chance of rain and snow showers late Wednesday night,
- highs 38-42 cooling back to 38 Wednesday lows 23-32.
- Mostly cloudy with a (40%) chance of showers and a bit warmer Thursday, just mostly cloudy at night.
- A mix of clouds and sun with a (40%) chance of rain Friday, a good (50%) chance of rain Friday night,
- Cloudy with a good (50%) chance of rain Saturday, mostly cloudy with a (30%) chance of rain at night,
- Then mostly cloudy with rain likely (70%) Sunday.
- highs near 46 lows 32-37. (seasonal averages high 52 low 35)
_________________
Forecast for Roseburg:
- Mostly cloudy with a (30%) chance snow showers and a bit cooler this afternoon (Presidents’ Day), partly cloudy tonight,
- Mostly cloudy and a bit warmer with a slight (20%) chance of snow showers Tuesday afternoon, a (30%) chance of rain and snow showers Tuesday night (under 0.10 in. of rain possible, snow level 400 ft.),
- Mostly cloudy with a (30%) chance of rain and snow showers and a bit warmer Wednesday (snow level 100 ft. rising to 700 ft.), then a (40%) chance of rain and snow showers Wednesday night.
- highs 42-46 lows 24-32.
- Mostly cloudy with a (40%) chance of rain and snow Thursday, partly cloudy with a slight (20%) chance of rain and snow Thursday night,
- Partly cloudy Friday, mostly cloudy with a (30%) chance of rain and snow Friday night,
- Cloudy and a bit warmer with a good (50%) chance of rain and snow Saturday, mostly cloudy with a (30%) chance of rain and snow Saturday night,
- Then cloudy with a (30%) chance of rain and snow Sunday.
- highs 44-49 lows 27-35. (seasonal averages high 54 low 37)
_____________________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Becoming partly cloudy and a bit cooler this afternoon (Presidents’ Day) and tonight,
- Mostly cloudy and a bit warmer with a good (50%) chance of coastal rain and snow showers Tuesday while a slight (20%) chance of AM inland snow showers and a (30%) chance of inland rain and snow showers and a bit warmer in the afternoon (under 0.10 in. of rain possible, snow level at ground level rising to 500 ft. in the afternoon), a good (50%) chance of coastal showers at night while a (40%) chance of inland rain and snow showers Tuesday night (under 0.10 in. of rain possible, snow level 1,500 ft. falling to 1,000 ft. late),
- Mostly cloudy and a bit warmer with a (30%) chance of coastal showers while (30%) chance of inland rain and snow showers Wednesday (snow level 800 ft.), then a (40%) chance of rain and snow showers Wednesday night.
- highs 42-47 lows 27-33.
- Mostly cloudy with a (40%) chance of rain and snow Thursday, partly cloudy Thursday night and Friday, mostly cloudy with a (40%) chance of rain and snow Friday night,
- Mostly cloudy and a bit warmer with a good (50%) chance of rain Saturday, then mostly cloudy with a good (50%) chance of rain and snow Saturday night and Sunday.
- highs 47-50 lows 33-42. (seasonal averages high 53 low 40)
________________
Forecast for the Cascades in Lane County:
- Mostly cloudy with a slight (20%) chance of snow showers and a bit cooler this afternoon and evening (President’s Day), just partly cloudy and very cold tonight,
- A mix of clouds and sun and a bit warmer with a (30%) chance of snow Tuesday afternoon, snow likely (70%) and cold late Tuesday night (2 in. of snow possible),
- Mostly cloudy with a slight (20%) chance of AM snow showers, partly cloudy and a bit warmer with a slight (20%) chance of snow showers Wednesday afternoon, then mostly cloudy and cold with a (40%) of snow showers Wednesday night.
- snow level at the surface today, free air freezing level at the surface late tonight and Tuesday AM, snow level at the surface Tuesday night through Wednesday night.
- highs 19-26 lows 6-16.
- Mostly cloudy and a bit warmer with good (50%) chance of snow showers Thursday, a slight (20%) chance of snow showers Thursday night,
- A mix of clouds and sun with a slight (20%) chance of snow and a bit warmer Friday, mostly cloudy with a good (50%) chance of snow at night,
- Mostly cloudy with snow likely (70%) Saturday, then mostly cloudy with a good (50%) chance of snow Saturday night and Sunday.
- snow level at the surface at the surface Thursday through Sunday.
- highs 28-32 lows 17-22.
________________
**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.
________________
Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.
________________