Here is my weekly weather quiz question for the last time. What is  “Alluvium?” Alluvium: Sediments deposited by erosional processes, usually by streams. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer at the bottom of this page. The first person to post the correct answer 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 changed our weather and toward the end of the workweek we’ll get colder on the backside of that low with Northwesterly airflow. The graphic for days 1-3 shows the next frontal system moving up into the Pacific Northwest. The graphic for days 3-7 shows no particular surface fronts for the week until next Monday. For mountain snow conditions at the local ski areas check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 7 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 1 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Home Wood Heating Advisory:

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 FLOOD WATCH IS IN EFFECT THROUGH LATE MONDAY NIGHT FOR THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE SOUTHERN OREGON CASCADES AND THE SISKIYOU MOUNTAINS.
• A HIGH WIND WARNING IS IN EFFECT FROM 4 AM UNTIL 4 PM MONDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN LAKE COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH MONDAY AFTERNOON FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WIND ADVISORY IS IN EFFECT UNTIL 4 AM MONDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND CENTRAL, EASTERN, AND WESTERN 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 evening showers likely (60%), rain late tonight (0.25 in. of rain possible), rain (0.25 in. of rain possible) Monday afternoon (Presidents’ Day) and breezy (Wind: SE 5-10 mph increasing and shifting SW 15-25 mph gusts to 45 mph in the afternoon), evening showers likely (70%), rain late at night (0.50 in. of rain possible),
• Mostly cloudy with AM rain, showers likely (70%) and a bit cooler Tuesday afternoon (0.25 in. of rain possible), cloudy with a good (50%) chance of showers Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of showers and a bit cooler Wednesday afternoon, then a (40%) chance of showers Wednesday night.
• lows 42-32 highs 54-47.
• Mostly cloudy with a (30%) chance of rain and snow showers and a bit cooler Thursday (snow level 1,000 ft.), just mostly cloudy at night,
• Mostly cloudy and a bit warmer with a (30%) chance of rain and snow showers Friday (snow level 1,500 ft), partly cloudy with a slight (20%) chance of showers Friday night (snow level 1,000 ft.),
• Mostly sunny and a bit warmer Saturday, partly cloudy with a slight (20%) chance of rain and snow at night (snow level 1,000 ft.),
• Then cloudy with a good (50%) chance of rain and snow Sunday (snow level 1,000 ft.).
• highs 45-48 lows 30-32. (seasonal averages high 52 low 35)

 

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Forecast for Roseburg:

• Cloudy with showers likely (70%) this evening, rain late tonight (0.25 in. of rain possible, evening snow level 3,500 ft.),
• Mostly cloudy with AM rain, rain likely (70%) and a bit warmer (0.50 in. of rain possible) Monday afternoon (Presidents’ Day), rain at night (0.50 in. of rain possible),
• Mostly cloudy and a bit cooler with showers likely (60%) Tuesday (0.50 in. of rain possible, afternoon snow level 3,000 ft.), a good (50%) chance of evening showers, a good (50%) chance of rain and snow showers Tuesday night (under 0.10 in. of rain possible),
• Cloudy with rain and snow showers likely (70%) and a bit cooler Wednesday, then mostly cloudy with a (40%) chance of rain and snow showers Wednesday night.
• lows 44-34 highs 56-45.
• Mostly cloudy and a bit cooler with a (30%) chance of rain and snow showers Thursday and Thursday night,
• Cloudy with a (40%) chance of rain and snow showers and a bit warmer Friday, mostly cloudy with a (30%) chance of rain and snow showers at night,
• Partly cloudy and a bit warmer with a slight (20%) chance of snow showers Saturday, mostly cloudy with a slight (20%) chance of rain and snow showers Saturday night,
• Then cloudy and a bit cooler with rain and snow likely (70%) Sunday.
• highs 44-47 cooling to 43 Sunday lows 34-30. (seasonal averages high 54 low 37)

 

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Forecast for The South Central Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with coastal evening showers while evening inland showers likely (70%), rain late tonight (0.50 in. of rain possible),
• Mostly cloudy and a bit cooler with rain (0.25 in. of rain possible) and windy (Wind: S 25 -35 mph at the shore decreasing and shifting SW 15-25 mph in the afternoon while SW 10-20 mph gusts to 45 mph into early afternoon inland) Monday (Presidents’ Day), rain Monday night (0.75 in. of rain possible),
• Mostly cloudy with showers and a bit cooler Tuesday (0.50 in. of rain possible), evening showers likely (70%), a good (50%) chance of showers late Tuesday night (under 0.10 in. of rain possible),
• Cloudy and a bit cooler with showers likely (70%) Wednesday, then mostly cloudy with a good (50%) chance of rain and snow showers at night.
• lows 47-33 highs 54-47.
•  Mostly cloudy with a (40%) chance of rain and snow showers and a bit cooler Thursday, a slight (20%) chance of rain and snow showers Thursday night,
• Cloudy and a bit warmer with a good (50%) chance of rain and snow showers Friday, a (30%) chance of showers Friday night,
• Just partly cloudy and a bit warmer Saturday, partly cloudy with a slight (20%) chance of rain and snow showers Saturday night,
• Then mostly cloudy and a bit cooler with rain and snow likely (70%) Sunday.
• highs 46-50 cooling back to 46 Sunday lows 36-33 warming to 38 Saturday night. (seasonal averages high 53 low 40)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with evening rain and snow showers likely (70%), rain and snow late tonight (0.50 in. of rain possible, 2-5 in. of snow possible),
• Cloudy with AM rain and snow, rain and snow showers (0.25 in. of rain possible, 1-3 in. of snow possible) Monday afternoon (Presidents’ Day) and breezy (Wind: SW 15-25 mph gusts to 40 mph), rain and snow at night (0.50 in. of rain possible, 3-6 in. of snow possible),
• Mostly cloudy with AM rain and snow, rain and snow showers and a bit cooler Tuesday afternoon and breezy (Wind: S 15-25 mph decreasing and shifting SW 10-15 mph gists to 35 mph in the afternoon), evening rain and snow showers likely (70%), cloudy with rain and snow showers likely (70%) late Tuesday night,
• Then mostly cloudy with a good (50%) chance of snow showers and a bit cooler Wednesday and at night.
• snow level 4,000 ft. tonight, 5,000 ft. Monday, 4,000 ft. Monday night, 3,500 ft. Tuesday, then at the surface Tuesday night through Wednesday night.
• lows 30-18 highs 38-30.
• Mostly cloudy and a bit cooler with a (30%) chance of snow showers Thursday, a slight (20%) chance of snow showers Thursday night through Friday night,
• Partly cloudy and a bit warmer with a slight (20%) chance of snow showers Saturday, just partly cloudy at night,
• Then mostly cloudy with a good (50%) chance of snow Sunday.
• snow level at the surface Wednesday through Saturday, free air freezing level at the surface Saturday night, then snow level at the surface Sunday.
• highs 27-33 lows 14-16.

 

 

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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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