Here is my weekly weather quiz question for the last time. What is “a Wasatch Wind?” Here is the correct answer. A Wasatch Wind is a strong easterly wind blowing out of the mouths of the canyons of the Wasatch Mountains onto the plains of Utah. It is also called canyon wind. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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A high pressure ridge (Shaded “Arch” shape with blue arrows) is moving over the Pacific Northwest and warmed us up to hot today. There will be a little cooling Sunday, but it will still be hot. The more serious cooling will take place in the beginning of the workweek.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 38 in the Good category measuring Ozone.

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

Cottage Grove: The Air Quality Index is 40 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM SUNDAY FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA GORGE,  THE NORTHERN OREGON CASCADES FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Clear tonight,
• Sunny, just a bit cooler, Sunday afternoon, clear in the evening, partly cloudy late Sunday night and Monday AM, mostly sunny and a bit cooler Monday afternoon, mostly clear in the evening, then mostly cloudy late Monday night,
• AM clouds, a mix of clouds and sun and a bit cooler Tuesday afternoon, partly cloudy in the evening, then mostly cloudy late Tuesday night.
• lows 57-54 highs 92-84.
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Wednesday afternoon and at night,
• A mix of clouds and sun with a slight (20%) chance of showers Thursday AM, partly cloudy and a bit warmerThursday afternoon through Friday night,
• Then a mix of clouds and sun and just a bit cooler Saturday.
• highs 80-85 cooling to 82 Saturday lows near 55. (seasonal averages high 84 low 52)

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Forecast for the Umpqua Basin including Roseburg:

• Clear tonight,
• Sunny and warm, but a bit cooler Sunday and Monday, clear Sunday night, mostly clear Monday night,
• Mostly sunny and cooler Tuesday, then mostly clear at night.
• lows 62-56 highs 97-85.
• Partly cloudy Wednesday through Thursday night,
• Sunny and a bit warmer Friday, then partly cloudy Friday night and Saturday.
• highs 83-89 lows 52-56. (seasonal averages high 85 low 57)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Clear at the shore this evening and mostly cloudy with patchy fog late tonight while clear inland tonight,
• Mostly cloudy with patchy coastal fog Sunday AM and sunny in the afternoon while sunny and cooler inland, mostly cloudy at the shore in the evening and partly cloudy with patchy fog late at night while  mostly clear inland Sunday night,
• Mostly cloudy with patchy coastal AM drizzle and fog Monday and just mostly cloudy in the afternoon while partly cloudy inland in AM and sunny in the afternoon, mostly cloudy at the shore at night while partly cloudy  inland,
• Then partly cloudy and a bit cooler Tuesday and Tuesday night.
• lows near 56 highs 66-64.
• Mostly cloudy Wednesday, partly cloudy Wednesday night and Thursday, partly cloudy with patchy fog Thursday night and Friday, then just partly cloudy Friday night and Saturday.
• highs near 65 lows near 55. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Mostly clear tonight,
• Mostly sunny and warmer Sunday, clear at night,
• Mostly sunny but cooler Monday, then mostly clear Monday night.
• Partly cloudy in the AM, mostly sunny and cooler Tuesday afternoon, partly cloudy Tuesday night.
• free air freezing level 14,000 ft. tonight, 15,000 ft. Sunday and Sunday night, 14,000 ft. Monday and Monday night, then 12,000 ft. Tuesday and Tuesday night,
• lows 52-46 highs 82-73.
• Partly cloudy and cooler Wednesday, then partly cloudy with a slight (20%) chance of showers late Wednesday night and Thursday AM,  just partly cloudy Thursday night,
• Then just partly cloudy and a bit warmer Friday through Saturday.
• free air freezing level 12,000 ft. Wednesday, snow level above 8,000 ft. Wednesday night and Thursday, free air freezing level 11,000 ft. Thursday night, then 13,000 ft. Friday through Saturday.
• highs 68-70 lows 45-48.

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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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