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 and heat.  Now the rapid warm up. The graphics for days 3-7 show frontal system movement Monday through Wednesday.

Note: With the oppressive heat that is expected remember to keep hydrated, wear sunscreen, and stay where it is cool if possible. Also, don’t forget to keep fresh cool water and shelter for your pets.

 

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 15 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 3 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

• A HEAT ADVISORY IS IN EFFECT FROM NOON UNTIL 9 PM SATURDAY FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST.
• AN EXCESSIVE HEAT WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING 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, THE NORTHERN OREGON CASCADES, THE CASCADES IN LANE COUNTY, AND THE UPPER HOOD RIVER VALLEY.
• AN EXCESSIVE HEAT WARNING IS IN EFFECT  IS IS EFFECT FROM 11 AM SATURDAY UNTIL 8 PM SUNDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, JOSEPHINE COUNTY, JACKSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SOUTHERN OREGON CASCADES, AND THE SISKIYOU MOUNTAINS.
• 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 Hot this afternoon and Saturday, clear both nights,
• Mostly sunny and still hot but a bit cooler Sunday, then partly cloudy Sunday night.
• highs 92-98 cooling to 93 Sunday lows 54-58.
• Partly cloudy Monday AM, sunny and much cooler in the afternoon, becoming cloudy late Monday night and Tuesday AM, partly cloudy and a bit cooler in the afternoon at night,
• A mix of clouds and sun in the AM, mostly sunny and a bit cooler Wednesday afternoon, clear in the evening, becoming mostly cloudy late Wednesday night,
• AM clouds and sun, then mostly sunny Thursday afternoon.
• highs 80-74 lows near 52. (seasonal averages high 75 low 49)

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Eugene-Springfield Pollen Count

Grass………. Very High (434)

Trees………. Moderate (19)

Last Counted: 6/23/17

Data Courtesy of Oregon Allergy Associates.

 

 

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Forecast for Roseburg:

• Sunny and a bit warmer, HOT, today and Saturday, clear each night,
• Sunny and still hot but a bit cooler Sunday, then partly cloudy with a slight (20%) chance of thunderstorms at night.
• highs 93-103 cooling to 99 Sunday lows 60-63 cooling back to 60 Sunday night.
• Mostly sunny and a bit cooler Monday with a slight (20%) chance of thunderstorms in the afternoon and mostly clear with a slight (20%) chance of thunderstorms Monday night,
• Mostly sunny and a bit cooler Tuesday, Wednesday and  Thursday, mostly clear each night,
• highs 86-78 lows near 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 this afternoon, clear tonight,
• Sunny and a bit warmer Saturday with areas of afternoon coastal fog and drizzle, clear in the evening, mostly cloudy with areas of coastal fog and drizzle late Saturday night while clear inland Saturday night.
• Areas of fog and drizzle in the AM, patchy drizzle and a bit cooler Sunday afternoon, partly cloudy with patchy drizzle and a slight (20%) chance of  thunderstorms in the evening, then mostly clear with patchy fog late Sunday night.
• highs 70-80 cooling to 69 Sunday lows 58-55.
• Sunny with patchy AM fog and drizzle, patchy lingering fog and a bit cooler Monday afternoon, mostly clear with patchy evening fog, partly cloudy late at night and Tuesday AM, sunny in the afternoon, mostly clear at night,
• Then mostly sunny Wednesday and Thursday, mostly clear Wednesday night.
• highs near 62 lows near 52. (seasonal averages high 63 low 51)

 

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Forecast for the Cascades in Lane County:

• Sunny and a bit warmer this afternoon, clear tonight,
• Sunny and hot Saturday, clear Saturday night.
• Mostly sunny in the AM, partly cloudy and a bit warmer Sunday afternoon, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of  thunderstorms late at night.
• free air freezing level 16,000 ft. tonight through Sunday, 15,000 ft. Sunday evening, then snow level above 8,000 ft. late Sunday night.
• highs 80-88 lows 46-52.
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms and a bit cooler in the afternoon and evening, just partly cloudy late Monday night and Tuesday AM, mostly sunny but a bit cooler in the afternoon, partly cloudy Tuesday night,
• Then mostly sunny and a bit cooler Wednesday and Thursday, mostly clear Wednesday night.
• snow level above 8,000 ft. Monday and in the evening, free air freezing level 13,000 ft. late Monday night, 13,000 ft. falling to 12,000 ft. Tuesday afternoon, then 12,000 ft. Tuesday night through Thursday.
• highs 74-65 lows 45-42.

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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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