Here is my weekly weather quiz question for the last time. What is “Agglomerate?” Here is the correct answer.  Agglomerate is an ice cover of floe formed by the freezing together of various forms of ice. 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 Air Low Pressure Trough (Shaded “U” shape with blue arrows) is pushing another frontal system shown on the days 1-3 graphic into the Pacific Northwest Sunday. The graphic for days 3-7 shows more frontal systems heading our way that will try to break through blocking surface high pressure. 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 3 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 11 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 10 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 HIGH SURF ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 3 AM UNTIL 6 PM SUNDAY FOR THE  WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE,  AND THE UPPER HOOD RIVER VALLEY.
• A HIGH SURF WARNING IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A HIGH WIND WARNING IS IN EFFECT FROM 1 AM UNTIL 7 PM SUNDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WIND ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 7 AM SUNDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS,
• A HIGH WIND WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 7 AM SUNDAY FOR JACKSON COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING FOR CENTRAL, EASTERN AND WESTERN LAKE COUNTY,
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM THIS AFTERNOON FOR THE SOUTHERN OREGON CASCADES AND THE SISKIYOU MOUNTAINS, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL AND EASTERN LAKE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 10 AM SUNDAY FOR THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN, CENTRAL AND EASTERN 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  a (40%) chance of evening showers, rain late tonight (0.25 in. of rain possible),
• Mostly cloudy with AM rain, a good (50%) chance of rain and a bit cooler Sunday afternoon (0.10 in. of rain possible), cloudy with a (40%) chance of showers Sunday night,
• Mostly cloudy with a slight (20%) chance of AM showers, a bit warmer with a (30%) chance of showers Monday afternoon, a slight (20%) chance of evening showers, just partly cloudy late Monday night,
• Mostly cloudy and a bit cooler Tuesday, then partly cloudy with patchy fog late at night.
• lows 37-30 highs 45-47 cooling back to 45 Tuesday.
• Patchy AM fog, partly cloudy Wednesday afternoon, then partly cloudy Wednesday night through Saturday.
• highs 46-50 cooling back to 46 Saturday lows near 32. (seasonal averages high 48 low 35)

 

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Forecast for Roseburg:

• Mostly cloudy with a slight (20%) chance of evening rain, rain and snow late tonight (snow level 3,000 ft. late tonight) and windy (Wind: SE 10-20 mph gusts to 35 mph increasing to S 20-30 mph gusts to 50 mph late tonight),
• Mostly cloudy with AM rain, snow likely (70%) with isolated thunderstorms a good (50%) chance of afternoon rain and snow showers (1 in. of snow possible, snow level 2,000 ft.) and breezy (Wind: S 15-25 mph), a good (50%) of rain and snow Sunday afternoon, a (30%) chance of rain and snow showers Sunday night (snow level 2,000 ft. rising to 2,500 ft.),
• Cloudy with a (30%) chance of rain and snow showers and a bit cooler Monday (snow level 1,500 ft. rising to 2,000 ft. in the afternoon), mostly cloudy with a slight (20%) chance of rain and snow showers and colder late at night (snow level 3,000 ft. falling to 2,000 ft.),
• Then partly cloudy and a bit cooler Tuesday and at night.
• lows 39-33 highs 50-46.
• Partly cloudy with patchy fog and a bit warmer Wednesday, partly cloudy with a slight chance of rain Wednesday night,
• Partly cloudy with a slight (20%) chance of showers and a bit warmer Thursday, mostly cloudy at night,
• Then just partly cloudy and a bit warmer Friday through Saturday.
• highs 47-52 lows near 35. (seasonal averages high 50 low 37)

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

• Mostly cloudy with a slight (20%) chance of evening rain, coastal rain and isolated thunderstorms late tonight while inland rain late tonight, windy (Wind: SE 10-20 mph increasing to S 20-30 mph gusts to 50 mph tonight.)
• Mostly cloudy with AM showers and isolated thunderstorms, coastal showers with a slight (20%) chance of thunderstorms in the afternoon while inland showers likely (70%) with a slight (20%) chance of thunderstorms in the afternoon and windy (Wind: S 25-35 mph at the shore while S 25-35 inland decreasing to S 15-25 mph by late morning), coastal evening showers and a slight (20%) chance of thunderstorms while inland showers, snow showers, and a slight (20%) chance of thunderstorms then showers late Sunday night, (evening snow level 2,000 ft.) and breezy (Wind: S 15-25 mph),
• Mostly cloudy with showers and a bit cooler Monday, breezy (Wind: S 15-25 mph), a (40%) chance of showers at night,
• Partly cloudy and a bit warmer Tuesday, mostly clear in the evening, then partly cloudy at night.
• lows 42-37 highs 46-52.
• Partly cloudy Wednesday, partly cloudy with a slight (20%) chance of rain Wednesday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday, mostly cloudy at night,
• Then partly cloudy and a bit warmer Friday through Saturday.
• highs 52-56 lows near 38. (seasonal averages high 52 low 40)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with a good (50%) chance of evening rain and snow showers, rain and snow late tonight (0.25 in. of rain possible, 1-3 in. of snow possible),
• Rain and snow Sunday AM, a good (50%) chance of rain and snow showers in the afternoon (0.10 in. of rain possible, 1 in. of snow possible), cloudy and colder with a good (50%) chance of snow showers and colder Sunday night,
• Mostly cloudy and a bit cooler with a (40%) chance of snow showers Monday, mostly cloudy with a slight (20%) chance of evening snow showers, partly cloudy with a slight (20%) chance of snow showers late Monday night,
• A mix of clouds and sun and a bit cooler Tuesday, then partly cloudy Tuesday night.
• snow level 3,000 ft. tonight and Sunday, at the surface Sunday night, 2,500 ft. Monday afternoon, 2,50 ft. Monday evening, free air freezing level at the surface Tuesday, then 3,500 ft. Tuesday night.
• lows 25-13 highs 33-29.
• Partly cloudy and a bit warmer Wednesday through Saturday.
• free air freezing level at the surface Wednesday, 4,000 ft. Wednesday night and Thursday, 5,000 ft. Thursday night and Friday, 6,500 ft. Friday night, then 7,000 ft. Saturday.
• highs 32-39 lows 20-24.

 

 

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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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