Here is my weekly weather quiz question. What are “Backing Winds?” The first person to post the correct answer as a comment on this page will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper Level High Pressure Ridge (Shaded “Arch” shape with blue arrows) has taken over control of the Pacific Northwest weather bringing lots of sunshine. The graphics for days 1-3 show the weak frontal system that moved through Oregon and brought some short-lived cooling. Now a rapid warm up. The graphics for days 3-7 show frontal system movement Sunday through Tuesday.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 16 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

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

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

• 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:

• Sunny and a bit warmer today, clear tonight,
• Then sunny and Hot Friday and Saturday, clear both nights.
• highs 83-98 lows 48-56.
• Sunny and HOT Sunday, clear Sunday night.
• Mostly sunny and cooler Monday, clear in the evening, becoming cloudy late Monday night and Tuesday AM, partly cloudy and a bit cooler in the afternoon and evening, mostly cloudy late Tuesday night,
• Mostly cloudy Wednesday AM, then mostly sunny in the afternoon.
• highs 95-76 lows 56-52. (seasonal averages high 75 low 49)

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Eugene-Springfield Pollen Count

Grass………. High (159)

Trees………. Low (12)

Last Counted: 6/21/17

Data Courtesy of Oregon Allergy Associates.

 

 

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Forecast for Roseburg:

• Sunny and a bit warmer today, Friday, and Saturday, clear each night,
• highs 83-99 lows 55-64.
• Sunny and a bit cooler Sunday, mostly clear at night,
• Sunny and a bit cooler Monday with a slight (20%) chance of thunderstorms in the afternoon and evening, clear Monday night,
• Mostly sunny and a bit cooler Tuesday, mostly clear at night,
• Then sunny Wednesday.
• highs 96-78 lows 63-55. (seasonal averages high 78 low 53)

 

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

• Sunny and a bit warmer today and breezy (Wind: N 15-25 mph gusts to 40 mph), clear tonight and still breezy (Wind: N 20-30 mph at the shore decreasing to N 10-15 mph late tonight while N 20 mph inland decreasing to N 10-15 mph late this evening and tonight),
• Mostly cloudy with patchy fog at the shore Friday AM and sunny and a bit cooler in the afternoon while patchy AM inland fog and sunny and a bit cooler in the afternoon, clear Friday night,
• Sunny and a bit warmer Saturday, then clear at night.
• highs 68-76 lows 53-57.
• Sunny and a bit cooler Sunday with patchy fog and drizzle in the afternoon, mostly clear with patchy fog Sunday night.
• Mostly sunny with patchy fog and drizzle and a bit cooler Monday, clear with patchy evening drizzle, patchy fog late at night and Tuesday AM, sunny and a bit cooler in the afternoon, mostly clear at night,
• Then mostly sunny and a bit cooler Wednesday.
• highs 76-63 lows 55-53. (seasonal averages high 62 low 51)

 

 

 

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Forecast for the Cascades in Lane County:

• Sunny and a bit warmer today, Friday, and Saturday, clear each night,
• free air freezing level 16,000 ft. falling to 15,000 ft. this afternoon, then 16,000 ft. tonight through Saturday night.
• highs 78-85 lows 45-56.
• Mostly sunny and a bit cooler Sunday, partly cloudy with a slight (20%) chance of showers late Sunday night,
• Mostly sunny with a slight (20%) chance of showers Monday AM, partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms in the afternoon and evening, just partly cloudy late Monday night,
• Mostly sunny but a bit cooler Tuesday, partly cloudy at night and Wednesday AM, then mostly sunny and a bit cooler in the afternoon.
• free air freezing level 16,000 ft. Sunday and in the evening, snow level above 8,000 ft. late Sunday night through Monday evening, free air freezing level 14,000 ft. late Monday night, 14,000 ft. falling to 13,000 ft. Tuesday afternoon and evening, then 13,000 ft. Tuesday night and Wednesday.
• highs 84-68 lows 54-44.

 

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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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