Check out my latest Eugene Daily News Weather Or Not column: Not Much Winter Weather Until Now. What’s going on?
__________
Here is my 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 ground in 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. This storm most likely will give us a real snowfall down to the valley floor so please drive extra carefully.
________________
Air Quality Index:
Eugene/Springfield: The Air Quality Index is 28 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 32 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 23 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 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:
- Mostly cloudy and bit cooler this afternoon, a slight (20%) chance of evening rain and snow, a good (50%) chance of snow late tonight (0.10 in. of rain possible, 1 in. of snow possible),
- Mostly cloudy with AM snow showers, a mix go clouds and sun with a (40%) chance of rain and snow showers Thursday afternoon (1 in. of snow possible), just partly cloudy and cold at night,
- Mostly cloudy with a slight (20%) chance of rain and snow and a bit warmer Friday afternoon, mostly cloudy with evening rain and snow likely (70%), rain likely (70%) late Friday night (snow level 1,500 ft.).
- highs 40-42 lows 28-25 warming to 33 Friday night.
- Mostly cloudy with rain Saturday, rain likely (70%) at night and Sunday (a bit warmer), showers likely (70%) Sunday night,
- Cloudy with a good (50%) chance of rain Monday, mostly cloudy with a good (50%) chance of rain and snow showers at night (snow level 1,500 ft.),
- Then mostly cloudy and a bit warmer with a (40%) chance of rain and snow showers Tuesday (snow level 1,000 ft.)
- highs 42-46 lows 33-35 cooling back to 33 Monday night. (seasonal averages high 52 low 35)
_________________
Forecast for Roseburg:
- Mostly cloudy with a good (50%) chance of AM rain and snow (1 in. of snow possible, snow level 200 ft.), just mostly cloudy and a bit warmer this afternoon, a (40%) chance of rain and snow at night (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 200 ft. late at night),
- Mostly cloudy with AM rain and snow likely (70%) Thursday, a good (50%) chance of rain and snow and a bit cooler in the afternoon (snow level 100 ft. rising to 700 ft. in the afternoon), partly cloudy with a slight (20%) chance of evening rain and snow, just mostly cloudy Thursday night,
- Partly cloudy with a slight (20%) chance of rain and snow and a bit warmer Friday afternoon, then mostly cloudy with a (40%) chance of rain and snow Friday night.
- lows 32-26 highs 40-44 cooling to 42 Thursday.
- Mostly cloudy and a bit warmer with rain and snow likely (70%) Saturday through Sunday, rain and snow showers Sunday night,
- Rain and snow showers likely (70%) and a bit warmer Monday and Monday night,
- Then mostly cloudy and a bit cooler with a good (50%) chance of rain and snow showers Tuesday.
- highs 46-43 warming to 50 Monday lows 32-36. (seasonal averages high 55 low 38)
_____________________
Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with a slight (20%) chance of inland AM showers, just mostly cloudy and a bit warmer this afternoon, a slight (20%) chance of evening rain and snow showers,rain and snow showers late tonight (under 0.10 in. of rain possible, snow level 500 ft.),
- Mostly cloudy with AM coastal showers likely (60%) and partly cloudy with a slight (20%) chance of coastal rain and snow showers Thursday afternoon while AM inland rain and snow showers likely (60%) a good(50%) chance of inland rain and snow showers in the afternoon (snow level 1,500 ft. falling to 600 ft.), mostly clear late at night,
- Partly cloudy and a bit warmer with a slight (20%) chance of coastal rain in the afternoon while a slight (20% chance of inland rain and snow in the afternoon (snow level 1,500 ft.), mostly cloudy with a (40%) chance of rain and snow in the evening, then a (30%) chance of rain Friday night.
- highs 45-48 lows 35-30 warming to 39 Friday night.
- Mostly cloudy and a bit warmer with rain likely (70%) Saturday through Sunday, showers Sunday night and Monday, rain and snow showers likely (70%) Monday night,
- Then mostly cloudy and a bit warmer with a (40%) chance of rain and snow Tuesday.
- highs 48-50 lows near 40. (seasonal averages high 53 low 40)
________________
Forecast for the Cascades in Lane County:
- Mostly cloudy with a (40%) chance of AM snow, a bit warmer with a slight (20%) chance of snow showers this afternoon (1 in. of snow possible), a (40%) of snow tonight (1-2 in. of snow possible),
- Cloudy with AM snow showers, mostly cloudy with a good (50%) chance of snow showers Thursday afternoon (1-2 in. of snow possible), a (30%) chance of evening snow showers, partly cloudy and very cold late at night,
- Partly cloudy in the AM, mostly cloudy with a slight (20%) chance of snow and a bit warmer Friday afternoon, snow likely (70%) and cold Friday night (2-4 in. of snow possible).
- snow level at the surface tonight through Thursday, free air freezing level at the surface late Thursday night, and Friday AM, then snow level at the surface Friday night.
- highs 25-27 lows 14-11 warming to 19 Friday night.
- Mostly cloudy with snow Saturday, snow likely (70%) at night and Sunday (a bit warmer), snow showers Sunday night,
- Cloudy and a bit warmer with snow likely (70%) Monday, mostly cloudy with a good (50%) chance of snow showers at night,
- Then mostly cloudy with a (40%) chance of snow showers and a bit warmer Tuesday.
- snow level at the surface Saturday through Sunday, 2,500 ft. Sunday night, then at the surface Monday through Tuesday.
- highs 27-33 lows 20-23 cooling back to 20 Monday night.
________________
**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.
________________