Here is my weekly weather quiz question. What is an “Anemometer?” 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 Low (Shaded “U”shape with blue arrows) currently off the California coast will move across the Pacific Northwest. The graphics for days days 1-3 show a weak frontal system moving over the Pacific Northwest Thursday night. The graphics for days 3-7 show frontal systems approaching the coast Sunday next Wednesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 44 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 27 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 45 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT LIGHTNING ON DRY FUELS FOR THE KLAMATH BASIN, THE FREMONT-WINEMA NATIONAL FOREST, THE SOUTHERN OREGON CASCADES, THE EASTERN ROGUE VALLEY, AND FOR THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES, THE UMPQUA NATIONAL FOREST, THE SOUTHERN OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE DESCHUTES NATIONAL FOREST AND THE MINUS SISTERS RANGER DISTRICT.
• The Oregon Health Authority has issued a Health Advisory for Odel Lake, located 75 miles southeast of Eugene off highway 58  in the northwest corner of Klamath County. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. People should avoid swallowing water while swimming or inhaling water droplets as a result of high-speed water activities , such as water skiing or power boating, in areas where blooms are identified. Although toxins are not absorbed through the skin, people who have skin sessitivities may experience a puffy, red rash at the affected area.
• 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.
• The Oregon Health Authority has updated the Health Advisory issued June 30 for Lake Billy Chinook, located about 12 miles west of Madras in Jefferson County. The update lifts the advisory on those areas of the Deschutes and Crooked River of Lake Billy Chinook arms affected by the advisory, and confines the advisory on the Metolius Arm to Perry South Cove. Water monitoring has confirmed that the level of blue-green algae toxins are below guideline values for human exposure. However, OHA recommends that people remain cautious when using the lake, particularly with pets because toxins are still well above the very low exposure levels established for dogs.

 

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

• Mostly clear tonight,
• AM clouds, sunny and a bit cooler Thursday afternoon, clear Thursday night,
• Mostly sunny and a bit warmer Friday, clear in the evening, partly cloudy late at night,
• Partly cloudy Saturday AM, mostly sunny and a bit warmer in the afternoon, clear Saturday night.
• lows 56-52 highs 82-87.
• Sunny and a bit warmer Sunday, clear at night,
• Sunny and a bit warmer Monday and Tuesday, clear Monday night, clear in the evening, partly cloudy Tuesday night,
• Partly cloudy Wednesday AM, then sunny Wednesday afternoon.
• highs 86-90 lows near 54. (seasonal averages high 84 low 52)

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Eugene-Springfield Pollen Count
Grass………. Moderate (5)
Trees………. Low (0)
Last Counted: 7/27/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season just about over.

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Forecast for Roseburg:

• Mostly clear tonight,
• AM clouds, sunny and a bit cooler Thursday afternoon, clear at night,
• Sunny and a bit warmer Friday, clear Friday night,
• Sunny and a bit warmer Saturday, then clear at night.
• lows 60-56 warming to 59 Saturday night highs 84-90.
• Sunny Sunday, clear at night,
• Sunny and a bit warmer Monday, Tuesday, and Wednesday,clear each night,
• highs 90-94 lows 58-62 cooling back to 58 Tuesday night. (seasonal averages high 86 low 57)

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

• Partly cloudy tonight,
• Mostly cloudy and a bit warmer Thursday with patchy AM coastal fog, mostly cloudy with patchy coastal fog at night while mostly clear inland Thursday night and Friday AM, sunny and a bit warmer in the afternoon, mostly clear in the evening, mostly cloudy with patchy fog late Friday night,
• Mostly cloudy with patchy AM fog, sunny and a bit warmer Saturday afternoon, mostly with patchy fog late Saturday night.
• lows 56-54 warming back to 56 Saturday night highs 62-65.
• Patchy AM fog, mostly sunny and a bit cooler Sunday afternoon, clear at night,
• Sunny and a bit cooler Monday, mostly clear with patchy fog Monday night and Tuesday AM, mostly sunny and a bit cooler Tuesday afternoon, mostly clear at night,
• Then mostly sunny and slightly warmer Wednesday.
• highs 65-63 warming to 67 Wednesday lows 55-57 cooling back to 55 Tuesday night. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Partly cloudy with a slight (20%) chance of showers and thunderstorms this evening, clear late tonight,
• Mostly sunny and a bit cooler Thursday, clear Thursday night,
• Sunny and a bit warmer Friday and Saturday, clear both nights.
• snow level above 8,000 ft. this evening, free air freezing level above 12,000 ft. Thursday through Saturday night.
• lows 49-52 highs 74-78.
• Sunny and a bit warmer Saturday and Sunday, clear both nights,
• Sunny Monday AM, partly cloudy in the afternoon and Monday night
• The mostly sunny Tuesday and Wednesday, mostly clear Tuesday night.
• free air freezing level above 12,000 ft. Saturday through Wednesday.
• highs 78-80 lows 52-54.

 

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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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