Here is my weekly weather quiz question for the last time. What are “Backing Winds?” Here is the correct answer. Backing Winds are winds which shift in a counterclockwise direction with time at a given location (e.g. from southerly to southeasterly), or change direction in a counterclockwise sense with height (e.g. westerly at the surface but becoming more southerly aloft). The opposite of veering winds. I’ll have a new weekly weather quiz question for you starting Monday. 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 even more heat. The graphics for days 3-7 show frontal system movement over the Pacific Northwest Tuesday.

Note: With the oppressive heat 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 28 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 19 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 20 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 UNTIL 9 PM TODAY FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST, 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, AND THE CASCADE FOOTHILLS IN LANE COUNTY.
• AN EXCESSIVE HEAT WARNING IS IN EFFECT 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 FIRE WEATHER WATCH IS IN EFFECT UNTIL 11 AM MONDAY FOR THE EASTERN ROGUE RIVER VALLEY AND THE WESTERN ROGUE BASIN.
• A FIRE WEATHER WATCH IS IN EFFECT UNTIL 5 PM MONDAY FOR 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 today, clear tonight,
• Mostly sunny and still hot but a bit cooler Sunday, mostly cloudy in the evening, partly cloudy late Sunday night,
• Mostly cloudy Monday AM, partly cloudy and much cooler in the afternoon and evening, then becoming cloudy late Monday night.
• highs 99-80 lows 54-58 cooling to 52 Monday night.
• Cloudy Tuesday AM, partly cloudy and a bit cooler in the afternoon at night,
• Partly cloudy and a bit cooler Wednesday and in the evening, becoming mostly cloudy late Wednesday night,
• Partly cloudy and a bit warmer Thursday, mostly clear at night,
• Then mostly sunny and a bit warmer Friday.
• highs 73-78 lows 50-52. (seasonal averages high 76 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 HOT today, clear tonight,
• Sunny and still hot but a bit cooler Sunday, partly cloudy with a slight (20%) chance of thunderstorms at night,
• Partly cloudy in the AM, mostly sunny and much cooler Monday with a slight (20%) chance of thunderstorms Monday afternoon, then just partly cloudy Monday night.
• highs 102-85 lows 63-55.
• Partly cloudy and a bit cooler Tuesday and at night.
• Partly cloudy Wednesday through Thursday, mostly clear Thursday night,
• Then mostly sunny and a bit warmer Friday.
• highs 78-82 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 today with areas of patchy afternoon and evening coastal fog and areas of drizzle and fog late tonight while clear inland tonight,
• Cloudy with areas of coastal fog and drizzle in the AM and cloudy and much cooler in the afternoon while sunny Sunday AM inland and party cloudy with patchy fog and much cooler inland Sunday afternoon, partly cloudy with a slight (20%) chance of  thunderstorms in the evening, patchy fog and drizzle late Sunday night,
• Partly cloudy with patchy AM fog and drizzle, patchy lingering fog and a bit cooler Monday afternoon, mostly clear with patchy evening fog, just partly cloudy late at night.
• highs 83-63 lows 56-53.
• Partly cloudy and a bit cooler Tuesday and at night,
• Partly cloudy Wednesday through Thursday, mostly clear Thursday night,
• Then mostly sunny and a bit warmer Friday.
• 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 HOT today, clear tonight.
• Mostly sunny and HOT again Sunday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers and thunderstorms late Sunday night,
• Partly cloudy and a bit cooler with a slight (20%) chance of showers and thunderstorms Monday, just partly cloudy at night.
• free air freezing level 16,000 ft. today through Sunday, snow level above 8,000 ft. Sunday night and Monday, free air freezing level 14,000 ft. falling to 13,000 ft. late Monday night.
• highs 89-76 lows 58-45.
• Partly cloudy Tuesday AM, mostly sunny but cooler in the afternoon, mostly clear Tuesday night,
• Mostly sunny and a bit cooler Wednesday and Thursday (a bit warmer), mostly clear both nights,
•  Then mostly sunny and a bit warmer Friday.
• free air freezing level 13,000 ft. Tuesday, 13,000 ft. falling to 12,000 ft.Tuesday night, 12,000 ft. Wednesday and Wednesday night, 12,000 ft. rising to 13,000 ft. Thursday, 13,000 ft. rising to 14,000 ft. Thursday night, then 14,000 Friday.
• 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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