Here is my weekly weather quiz question. What is “Agglomerate?” 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. The graphic for days 3-7 shows more frontal systems heading our way. 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 5 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 13 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 7 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: YELLOW – Caution is Advised.

*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 FROM 4 AM UNTIL 10 PM SATURDAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 AM SATURDAY UNTIL 6 PM SUNDAY FOR THE  WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE,  AND THE UPPER HOOD RIVER VALLEY.
• A HIGH SURF ADVISORY IS IN EFFECT UNTIL 10 PM TONIGHT FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A HIGH SURF WARNING IS IN EFFECT FROM 10 PM TONIGHT UNTIL 10 PM SATURDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A HIGH WIND WARNING IS IN EFFECT FROM 1 AM UNTIL 1 PM SUNDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A HIGH WIND WATCH IS IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY AFTERNOON FOR JACKSON COUNTY.
• A HIGH WIND WATCH IS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING FOR CENTRAL, EASTERN AND WESTERN LAKE COUNTY,
• A WINTER WEATHER ADVISORY IS IN EFFECT FROM 4 PM SATURDAY UNTIL 4 PM SUNDAY FOR THE SOUTHERN OREGON CASCADES AND THE SISKIYOU MOUNTAINS.
• A HIGH WIND WATCH IS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY AFTERNOON FOR NORTHERN AND EASTERN KLAMATH COUNTY AND 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:

• Cloudy with a good (50%) chance of showers tonight ( 0.10 in. of rain possible),
• Showers and a bit cooler Saturday (0.25 in. of rain possible), a slight (20%) chance of evening showers,  rain late Saturday night (0.10 in. of rain possible),
• Cloudy with AM rain, a good (50%) chance of rain and a bit cooler Sunday afternoon, evening showers likely (70%), a good (50%) chance of showers late Sunday night,
• Cloudy and a bit warmer with a good (50%) chance of showers Monday, then mostly cloudy with a slight (20%) chance of showers Monday night.
• lows 38-32 highs 47-43 warming to 45 Monday.
• A mix of clouds and sun Tuesday, partly cloudy with patchy fog late at night,
• Patchy AM fog, partly cloudy Wednesday, then partly cloudy Wednesday night through Friday.
• highs 45-48 cooling back to 45 Friday lows 32-29. (seasonal averages high 48 low 35)

 

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Forecast for Roseburg:

• Cloudy with a good (50%) chance of showers tonight (0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft. late tonight),
• Mostly cloudy with AM rain and snow showers, showers and a bit cooler Saturday afternoon (snow level  2,500 ft. rising to 3,500 ft.), cloudy with rain late Saturday night,
• Cloudy with AM rain and snow likely (70%), a good (50%) of rain and snow and a bit cooler Sunday afternoon, cloudy with a (40%) chance of evening showers, a good (50%) chance of rain and snow showers late Sunday night (snow level 3,000 ft. falling to 2,000 ft.),
• Cloudy with a good (50%) chance of rain and snow showers and a bit cooler Monday, a (40%) chance of evening showers, a slight (20%) chance of rain and snow and colder late at night.
• lows 39-32 highs 50-47.
• Partly cloudy and a bit cooler Tuesday, just partly cloudy at night,
• Partly cloudy with patchy fog and a bit warmer Wednesday and Thursday, partly cloudy Wednesday night, mostly cloudy Thursday night,
• Then sunny Friday.
• highs 46-48 lows 32-35. (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 coastal showers and a slight (20%) chance of thunderstorms tonight while inland showers likely (70%) with a slight (20%) chance of thunderstorms this evening, showers likely (70%) late tonight ( 0.10 in. of rain possible)
• Mostly cloudy with coastal showers and a slight (20%) chance of thunderstorms Saturday AM and coastal showers and a bit warmer in the afternoon while inland showers Saturday, a slight (20%) chance of evening rain, rain likely (70%) at night and windy (Wind: SE 10-20 mph at the shore increasing to SE 25-35 mph while S 5-10 mph inland increasing to SE 15-25 mph late evening and at night.)
• Mostly cloudy with coastal rain Sunday while AM inland rain with inland rain likely (70%) in the afternoon and windy (Wind: S 25-35 at the shore while S 10-20 mph inland), coastal evening showers with coastal showers likely (70%) late at night while inland showers Sunday night and breezy (Wind: S 15-25 mph at the shore while S 10-20 mph inland),
• Cloudy with AM showers likely (70%), a good (50%) chance of afternoon showers and a bit cooler Monday afternoon, then mostly cloudy with a (40%) chance of showers at night.
• lows 42-37 highs 53-50.
• Partly cloudy and a bit warmer Tuesday through Wednesday night,
• Mostly cloudy and a bit warmer Thursday and Thursday night,
• Then partly cloudy and a bit warmer Friday.
• highs 50-54 lows 36-40. (seasonal averages high 52 low 40)

 

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Forecast for the Cascades in Lane County:

• Mostly cloudy with rain and snow showers likely (70%) tonight (0.10 in. of rain possible, 2 in. of snow possible),
• AM snow showers, rain and snow showers and a bit cooler Saturday afternoon (0.25 in. of rain possible, 1-4 in. of snow possible), evening rain and snow showers likely (70%), rain and snow late Saturday night (2 in. of snow possible),
• Rain and snow Sunday, snow showers likely (70%) and cold Sunday night,
• Cloudy and a bit cooler with a good (50%) chance of snow showers Monday, mostly cloudy with a (30%) chance of evening snow showers, then a slight (20%) chance of snow showers late Monday night.
• snow level 2,500 ft. tonight and Saturday, 3,000 ft. Saturday night through Sunday night, at the surface Monday, then 2,500 ft. Monday night.
• lows 25-16 highs 30-32 cooling to 29 Monday.
• A mix of clouds and sun and a bit warmer Tuesday, then partly cloudy and a bit warmer Tuesday night through Friday.
• free air freezing level at the surface Tuesday, 4,000 ft. Tuesday night, 5,000 ft. Wednesday, 4,500 ft. Wednesday night, 5,000 ft. Thursday and Thursday night, then 5,500 ft. Friday.
• highs 29-37 lows 15-19.

 

 

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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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