Here is my weekly weather quiz question for the last time. What is “Alluvium?” Here is the correct answer. 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. 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 pushes into the Pacific Northwest as you can see on the days 1,2 & 3 graphic bringing colder air and the potential for snow, little or none expected on the valley floor. The graphic for days 3-7 shows the typical parade of Winter-like storms that bring rain and snow. There will be continued snow on the Cascade Passes but snow levels will continue to rise and fall. Willamette Pass, Hoodoo ski area, and Mt. Ashland have all started their ski season. 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 10 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 15 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 WINTER STORM WARNING IS IN EFFECT FROM 4 PM THIS AFTERNOON THROUGH 10 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM THIS AFTERNOON THROUGH 10 AM TUESDAY FOR THE SOUTH CENTRAL OREGON COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN LAKE COUNTY.
• A WINTER STORM WARNING IS IN EFFECT FROM 10 AM TODAY UNTIL 10 AM TUESDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A WINTER STORM WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 10 AM TUESDAY FOR JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 10 AM TUESDAY FOR JACKSON COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 AM TODAY UNTIL 10 AM TUESDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR THE COAST RANGE OF NORTHWEST OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 6 PM THIS EVENING FOR THE CENTRAL COAST RANGE OF WESTERN OREGON.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 1 PM TODAY ABOVE 500 FT. FOR THE GREATER PORTLAND METRO AREA, AND THE CENTRAL WILLAMETTE VALLEY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 2 PM TODAY FOR THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, AND THE UPPER HOOD RIVER VALLEY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL MIDNIGHT TONIGHT FOR THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE CASCADE FOOTHILLS IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
• 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:

• Mostly cloudy with AM rain and snow showers, showers and a bit cooler this afternoon (0.50 in. of rain possible, little or no accumulation of snow possible with snow level 1,000 ft.), evening showers likely (70%), rain and snow showers likely (70%) late tonight (0.25 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft.),
• Mostly cloudy with a good (50%) chance of AM rain and snow showers, a bit cooler Tuesday with a slight (20%) chance of rain and snow showers in the afternoon, partly cloudy late Tuesday night and Wednesday, increasing clouds to cloudy with a good (50%) chance of snow Wednesday night.
• highs 42-37 lows 33-26 warming to 32 Wednesday night.
• Cloudy and warmer with rain and freezing rain Thursday, rain at night,
• Mostly cloudy with rain likely (70%) Friday, showers likely (70%) Friday night,
• Cloudy with a good (50%) chance of showers and a bit cooler Saturday, then mostly cloudy with a good (50%) chance of showers Saturday night and Sunday.
• highs 46-44 lows 32-40 cooling to 37 Saturday night. (seasonal averages high 46 low 35)

 

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Forecast for Roseburg:

• Cloudy with rain and snow showers a bit cooler today (0.25 in. of rain possible, 1-2 in. of snow possible above 1,500 ft., snow level 900 ft. rising to 1,500 ft. in the afternoon), rain and snow showers tonight (0.25 in. of rain possible, 3-5 in. of snow possible, snow level 1,5000 ft. falling to 1,000 ft.),
• Mostly cloudy with rain and snow showers likely (70%) Tuesday AM, partly cloudy and a bit cooler with a slight (20%) chance of rain and snow showers in the afternoon (0.10 in. of rain possible, 1 in. of snow possible in lower elevations, 1-2 in. of snow possible above 1,500 ft. snow level 600 ft.), partly cloudy with patchy fog and freezing fog late Tuesday night and Wednesday AM, just partly cloudy Wednesday afternoon, rain and snow likely (70%) in the evening, then snow likely (70%) with a slight (20%) chance of light freezing rain late Wednesday night.
• highs 44-39 lows 34-22 warming to 37 Wednesday night.
• Mostly cloudy with rain likely (70%) a bit warmer Thursday afternoon, rain Thursday night,
• Mostly cloudy and a bit cooler with rain likely (70%) Friday, cloudy with a (30%) chance of evening showers, a (40%) chance rain and snow showers and colder Friday night,
• Cloudy and a bit cooler with a (40%) chance of AM rain and snow showers Saturday, a (40%) chance of afternoon showers, rain likely (60%) Saturday night,
• Then cloudy with a (30%) chance of rain and snow Sunday.
• highs 52-47 lows 42-38 Friday night. (seasonal averages high 48 low 37)

 

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

• Mostly cloudy and cooler with AM coastal rain and showers this afternoon while inland AM rain and snow likely (70%) and a bit cooler with afternoon scattered rain and snow showers while a good (50%) chance of inland AM rain and snow showers and inland rain this afternoon (0.25 in. of rain possible, AM snow level 1,500 ft.), coastal showers while inland rain and snow showers (little or no accumulation of snow possible, snow level 2,000 ft. falling to 1,500 ft. late) tonight (0.25 in. of rain possible),
• Mostly cloudy with AM coastal showers likely (70%) Tuesday while inland AM rain and snow showers, just partly cloudy and a bit warmer in the afternoon (under 0.10 in. of rain possible, little or no snow accumulation, snow level 900 ft.), partly cloudy with patchy fog and freezing fog late Tuesday night,
• Areas of AM fog and freezing fog, just mostly cloudy and a bit warmer Wednesday afternoon, then rain likely (70%) at night.
• highs 47-50 lows 38-30 warming to 43 Wednesday night.
• Cloudy and a bit warmer with rain Thursday and Thursday night,
• Mostly cloudy with rain likely (70%) and a bit cooler Friday, showers likely (70%) at night,
• Cloudy with a good (50%) chance of showers Saturday, rain likely (70%) Saturday night,
• Then cloudy with a (30%) chance of rain Sunday.
• highs 55-50 lows 46-40. (seasonal averages high 51 low 40)

 

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Forecast for the Cascades in Lane County:

• Cloudy with snow showers and a bit cooler today (2-5 in. of snow possible), snow showers and cold tonight (3-5 in. of snow possible),
• Mostly cloudy with snow showers likely (60%) Tuesday AM, partly cloudy with a slight (20%) chance of snow showers and a bit cooler in the afternoon (1-2 in. of snow possible), then just mostly clear and cold at night,
• Partly cloudy and a bit warmer Wednesday, then becoming mostly cloudy with snow likely (70%) Wednesday night.
• snow level at the surface today through Tuesday, free air freezing level at the surface Tuesday night and Wednesday (a bit cooler), then snow level at the surface Wednesday night.
• highs near 27 lows 19-13 warming to 20 Wednesday night.
• Snow with rain likely (70%) and a bit warmer Thursday, rain and snow at night,
• Snow and rain and a bit cooler Friday, rain and snow showers Friday night,
• Cloudy with a good (50%) chance of snow showers Saturday, mostly cloudy with a good (50%) chance of rain and snow showers at night,
• Then mostly cloudy with a good (50%) chance of snow showers Sunday.
• snow level at  the surface Thursday, 4,500 ft. Thursday night, 3,000 ft. Friday and Friday night,  2,500 ft. Saturday, 3,000 ft. Saturday night, then 2,500 ft. Sunday.
• highs 33-30 lows 28-22.

 

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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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