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 record heat Saturday. There will be more serious cooling in the beginning of the workweek.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 29 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 20 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 33 in the Good category measuring Particulate Matter.

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

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Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM THIS EVENING FOR  BREEZY WINDS AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE NORTHERN CASCADES AND THE LOWER COLUMBIA BASIN OF OREGON.
• A RED FLAG WARNING IS IN EFFECT FROM NOON  MONDAY UNTIL 8 PM TUESDAY FOR WINDY CONDITIONS AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE NORTHERN CASCADES AND THE LOWER COLUMBIA BASIN OF OREGON.
• A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TODAY 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 to partly cloudy late tonight.
• Partly cloudy Monday AM, mostly sunny and a bit cooler Monday afternoon, mostly clear in the evening, mostly cloudy late Monday night,
• AM clouds, mostly sunny and a bit cooler Tuesday afternoon, partly cloudy in the evening, mostly cloudy late Tuesday night and Wednesday AM, mostly sunny and cooler in the afternoon, mostly cloudy in the evening, then partly cloudy Wednesday night.
• lows 56-53 highs 89-82.
• Partly cloudy and a bit warmer Thursday through Friday night,
• A mix of clouds and sun and just a bit cooler Saturday, mostly cloudy in the evening, then partly cloudy Saturday night and Sunday.
• highs 84-86 cooling back to 84 Sunday lows 54-57. (seasonal averages high 84 low 52)

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Forecast for the Umpqua Basin including Roseburg:

• Clear tonight,
• Sunny Monday, mostly clear in the evening, partly cloudy Monday night,
• Mostly cloudy in the AM, sunny and cooler Tuesday afternoon, clear in the evening, partly cloudy at night,
• Then partly cloudy and cooler Wednesday and Wednesday night.
• lows 62-56 highs 97-85.
• Partly cloudy and a bit warmer Thursday, mostly clear at night,
• Mostly sunny and a bit warmer Friday and Saturday, mostly cloudy Friday night, then partly cloudy Saturday night and Sunday.
• highs 83-89 lows 52-56. (seasonal averages high 86 low 57)

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

• Mostly cloudy with patchy coastal fog late tonight while mostly clear inland tonight,
• 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 mostly cloudy in the evening inland mostly cloudy  late Monday night inland,
• Mostly cloudy Tuesday with patchy AM coastal fog, mostly cloudy in the afternoon, then mostly cloudy Tuesday night through Wednesday night.
• lows 57-55 highs 66-64.
• Mostly cloudy Thursday, just partly cloudy Thursday night and Friday, just partly cloudy Friday night through Saturday night,
• Then mostly cloudy Sunday AM, and sunny Sunday afternoon.
• 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 cooler Monday and Tuesday, then mostly clear Monday night, mostly cloudy Tuesday night,
• Then partly cloudy and cooler Wednesday and Wednesday night.
• free air freezing level 14,000 ft. tonight through Tuesday, 13,000 ft. Tuesday night, 12,000 ft. Wednesday, then 11,000 ft. Wednesday  night.
• lows 49-44 highs 78-68.
• Then partly cloudy Thursday AM through Sunday.
• free air freezing level 11,000 ft. Thursday, then 12,000 ft. Thursday night through Sunday.
• highs 70-74 cooling back to 70 Sunday 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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