Here is my new weekly weather quiz question. What is “Alluvium?”  Please remember to post your answer at the bottom of this page. An email will not suffice. 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 area with blue arrows) is sending more storms our way.  A frontal system will push into the Pacific Northwest today as you can see on the days 1,2 & 3 graphic. The graphic for days 3-7 shows the typical parade of storms that bring our Autumn rain. There will be continued snow on the Cascade Passes but snow levels will continue to rise and fall. Willamette Pass is open. Hoodoo ski area plans to open today. Mt. Ashland announced Wednesday that they are starting their ski season early- this Sunday December 4th. It looks like the ski season has a good chance of starting reasonably early this year. For mountain snow conditions check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 63 in the Moderate category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 56 in the Moderate 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 WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 AM UNTIL 4 PM SUNDAY FOR THE NORTHERN OREGON CASCADES AND FROM 4 AM UNTIL 4 PM FOR THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 AM UNTIL 10 PM SUNDAY FOR THE SOUTH CENTRAL CASCADES, THE SOUTHERN OREGON CASCADES,  THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN LAKE COUNTY.
• A HIGH WIND WARNING IS IN EFFECT FROM 4 PM UNTIL 7 PM SUNDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A HIGH SURF ADVISORY IS IN EFFECT 6 PM THIS EVENING FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A BEACH HAZARD STATEMENT IS IN EFFECT UNTIL 4 PM TODAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST. THAT MEANS LARGE BREAKERS ARE EXPECTED MOST OF THE DAY ON SATURDAY WITH HIGHEST POTENTIAL FOR DANGEROUS WAVE RUNUP ON BEACHES LATE SATURDAY AFTERNOON. JETTIES AND SURF ZONES WILL BE ESPECIALLY DANGEROUS.
• A Permanent Health Advisory remains 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.
• A Blue-Green Algae Health Advisory remains in effect for Agency Lake. Agency Lake is located just north of Upper Klamath Lake near Klamath Falls along Highway 97 in Klamath County. Water monitoring on the lake has confirmed the presence of high levels of blue-green algae and associated toxins that can be harmful to people and animals. Swallowing water while swimming or inhaling water droplets as a result of high-speed water activities, such as water skiing and power boating, should be avoided in areas where blooms are identified. Although toxins are not absorbed through the skin, contact with cells from a bloom can cause skin irritation and a red, puffy rash in individuals with skin sensitivities, or those who develop rashes easily.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Cloudy with a (30%) chance of evening rain, rain late tonight (0.25 in. of rain possible),
• Mostly cloudy with rain and a bit cooler Sunday (0.50 in. of rain possible), a good (50%) chance of evening showers, a good (50%) chance of rain and snow and colder late Sunday night (under 0.10 in. of rain possible),
• Mostly cloudy with AM rain and snow, rain and a bit cooler Monday afternoon (0.50 in. of rain possible), evening rain and snow showers, snow showers likely (70%) late at night (0.25 in. of rain possible),
•  A mix of clouds and sun with a slight (20%) chance of snow showers Tuesday AM, just a mix of clouds and sun and a bit cooler Tuesday afternoon, then partly cloudy with patchy freezing fog late Tuesday night.
• lows 43-26 highs 48-39.
• Patchy AM freezing fog, a mix of clouds and sun and a bit cooler Wednesday afternoon, becoming cloudy with a (40%) chance of showers or a slight (20%) chance of  freezing rain Wednesday night,
• Cloudy with AM rain or freezing rain likely (70%), a bit warmer with rain likely (70%) Thursday afternoon, rain at night,
• Mostly cloudy with rain likely (70%) and a bit warmer Friday, then cloudy with a good (70%) chance of showers Friday night and Saturday.
• highs 37-47 lows 32-39. (seasonal averages high 47 low 35)

 

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Forecast for Roseburg:

• Cloudy with rain likely (70%) tonight,
• Mostly cloudy with rain Sunday (0.50 in. of rain possible), a (30%) chance of evening rain and snow (under 0.10 in. of rain possible, snow level 2,500 ft.), a slight (20%) chance of rain and colder at night ,
• Cloudy with a (40%) chance of rain and snow Monday AM, a bit cooler with rain and snow in the afternoon (0.10 in. of rain possible), rain and snow showers Monday night (0.25 in. of rain possible, snow level 1,500 ft.),
• Mostly cloudy with rain and snow showers Tuesday, just mostly cloudy and a bit cooler in the afternoon, partly cloudy with patchy fog late at night.
• lows 44-30 highs 50-40.
• Areas of AM fog, just partly cloudy and a bit warmer Wednesday afternoon, mostly cloudy with a slight (20%) chance of showers with light freezing rain and snow showers in the evening, a slight (20%) chance of showers and light freezing rain late Wednesday night,
• Cloudy with rain and a slight (20%) chance of freezing rain Thursday AM, rain a bit warmer in the afternoon and Thursday night,
• Mostly cloudy with rain likely (70%) Friday, a (30%) chance of rain and snow showers and colder Friday night,
• Then cloudy and a bit cooler with a slight (20%) chance of rain and snow showers Saturday.
• highs 40-50 cooling to 47 Saturday lows 38-44 cooling back to 38 Friday night. (seasonal averages high 48 low 37)

 

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

• Cloudy with coastal rain late tonight while inland rain likely (70%) late tonight (under 0.10 in. of rain possible),
• Mostly cloudy and a bit cooler with rain Sunday (0.50 in. of rain possible), a slight (20%) chance of rain late Sunday night (under 0.10 in. of rain possible, snow level 2,000 ft. late at night),
• Mostly cloudy with coastal rain and a bit cooler Monday while a good (50%) chance of inland AM rain and inland rain in the afternoon (0.25 in. of rain possible, AM snow level 2,000 ft.), coastal showers while inland rain and snow showers Monday night (0.25 in. of rain possible),
• Mostly cloudy with a (30%) chance of AM showers Tuesday, just mostly cloudy and a bit warmer in the afternoon, partly cloudy in the evening, then mostly cloudy with patchy fog late Tuesday night.
• lows 45-32 highs 52-47 warming to 50 Tuesday.
• Areas of AM fog, just mostly cloudy Wednesday, a slight (20%) chance of rain at night,
• Cloudy and a bit warmer with rain Thursday, rain and breezy Thursday night,
• Mostly cloudy with rain likely (70%) and a bit cooler Friday, a good (50%) chance of showers at night,
• Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Saturday.
• highs 50-54 cooling to 50 Saturday lows 43-48 cooling back to 43 Friday night. (seasonal averages high 52 low 40)

 

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Forecast for the Cascades in Lane County:

• Cloudy with a slight (20%) chance of rain and snow this evening, snow and rain late tonight (0.50 in. of rain possible, 1-2 in. of snow possible),
• Mostly cloudy with rain and snow and a bit cooler Sunday (1.00 in. of rain possible, 6-12 in. of snow possible), cloudy with a good (50%) chance of evening snow showers, a good (50%) chance of snow late Sunday night,
• Cloudy with snow and a bit cooler Monday, snow showers and cold at night,
• Mostly cloudy with a (30%) chance of snow showers Tuesday AM, a slight (20%) chance of snow showers and a bit cooler in the afternoon, then just partly cloudy at night.
• snow level 4,000 ft. today, 3,500 ft. Saturday night, 4,500 ft. Sunday, 2,500 ft. Sunday evening,  then at the surface Monday and  Monday night.
• lows 28-13 highs 35-24.
• A mix of clouds and sun and a bit warmer Wednesday, becoming cloudy with a good (50%) chance of snow showers or a slight (20%) chance of freezing rain Wednesday night,
• AM snow with rain or freezing rain likely (70%), snow with rain likely (70%) and a bit warmer Thursday afternoon, rain and snow at night,
• Snow and rain and a bit cooler Friday, rain and snow showers likely (70%) at night,
• Then cloudy with a good (50%) chance of snow showers Saturday.
• free air freezing level at the surface Tuesday night and Wednesday, snow level at the surface Wednesday night, 2,500 ft. Thursday, 5,000 ft. Thursday night, 3,500 ft. Friday, 3,000 ft. Friday night, then 2,500 ft. Saturday.
• highs 27- 35 cooling to 30 Saturday lows 14-29.

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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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