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) pushed 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 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 19 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 41 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 52 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 HIGH SURF ADVISORY IS IN EFFECT UNTIL 10 PM MONDAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• 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 and a slight (20%) chance of thunderstorms this evening, a good (50%) chance of showers late tonight (0.10 in. of rain possible, more in storms),
• Mostly cloudy with a (30%) chance of AM showers, a slight (20%) chance of showers and a bit cooler Monday afternoon, mostly cloudy in the evening, just partly cloudy late Monday night,
• Mostly cloudy and a bit cooler Tuesday with a slight (20%) chance of afternoon sprinkles, mostly cloudy with evening sprinkles, partly cloudy with patchy fog late at night,
• Mostly cloudy with patchy AM fog, mostly cloudy and a bit warmer Wednesday afternoon, then a slight (20%)  chance of rain Wednesday night.
• lows 34-28 warming to 32 Wednesday night highs 47-44 warming back to 47 Wednesday.
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday, partly cloudy at night,
• Mostly sunny Friday, partly cloudy Friday night through Saturday night,
• Then mostly cloudy Sunday.
• 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 (30%) chance of rain and snow showers tonight (snow level 2,000 ft.),
• A (30%) chance of rain and snow showers and a bit cooler Monday (snow level 1,500 ft. rising to 2,500 ft. in the afternoon), cloudy with a slight (20%) chance of evening rain and snow showers, partly cloudy and colder with patchy freezing fog late at night (evening snow level 3,000 ft.),
• Patchy AM freezing fog, sunny and a bit cooler Tuesday afternoon, partly cloudy at night,
• Mostly cloudy with patchy fog and a bit warmer Wednesday, then a slight (20%) chance of rain and snow Wednesday night.
• lows 35-30 warming back to 35 Wednesday night highs near 47.
• Mostly cloudy with patchy fog and a slight (20%) chance of showers and a bit warmer Thursday, then partly cloudy and a bit warmer Thursday night through Sunday.
• highs 48-52 lows near 35. (seasonal averages high 51 low 37)

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

• Mostly cloudy with coastal evening showers likely (70%) and a slight (20%) chance of thunderstorms while a good (50%) chance of inland evening showers and a slight (20%) chance of thunderstorms, a good (50%) chance of showers late tonight (snow level 2,000 ft.),
• Mostly cloudy with a (40%) chance of showers and a bit warmer Monday (AM snow level 2,000 ft), a (30%) chance of evening showers, patchy coastal fog at night while patchy fog and freezing fog late Monday night,
• Sunny with patchy AM coastal fog while patchy AM fog and freezing fog inland, sunny Tuesday afternoon, mostly clear in the evening, partly cloudy late at night,
• Mostly cloudy with a slight (20%) chance of rain Wednesday afternoon, mostly cloudy with a (30%) chance of rain Wednesday night.
• lows 42-35 warming to 39 Wednesday night highs near 52.
• Mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday, then partly cloudy and a bit warmer Thursday night through Sunday.
• highs 53-57 lows 39-37. (seasonal averages high 52 low 40)

 

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Forecast for the Cascades in Lane County:

• Cloudy with a good (50%) chance of snow showers and cooler tonight,
• Mostly cloudy with a (40%) chance of snow showers Monday AM, a bit cooler with a slight (20%) chance snow showers in the afternoon and evening, just mostly cloudy late Monday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of show showers Tuesday afternoon, mostly cloudy with a slight (20%) chance of evening snow flurries, partly cloudy late Tuesday night,
• A mix of clouds and sun and a bit warmer Wednesday, then mostly cloudy with a (30%) chance of rain and snow Wednesday night.
• snow level at the surface tonight, 2,500 ft. Monday, free air freezing level at the surface late Monday night and Tuesday AM, snow level 2,500 ft. Tuesday night, free air freezing level at the surface Wednesday, then snow level 3,000 ft. Wednesday night.
• lows 20-13 warming to 20 Wednesday night highs 32-29 warming back to 32 Wednesday.
• A mix of clouds and sun with a slight (20%) chance of snow showers Thursday, partly cloudy at night,
• Mostly sunny and a bit warmer Friday, then partly cloudy and a bit warmer Friday night through Sunday.
• snow level at the surface Thursday, free air freezing level 4,000 ft. Thursday night, 5,000 ft. Friday, 7,000 ft. Friday night, 7,500 ft. Saturday, then 9,000 ft. Saturday night and Sunday.
• 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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