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 Pressure Trough (Shaded “U”shape with blue arrows) currently off the California coast is still in control of our weather. The graphics for days days 1-3 show a weak frontal system approaching the Pacific Northwest Sunday. An Upper Level High Pressure Ridge (Shaded “Arch”shape with blue arrows) takes over for more warming Saturday and Sunday. The graphics for days 3-7 show a frontal system approaching the coast next Thursday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 18 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 13 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

• A Health Advisory remains in effect 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:

• Sunny and a bit warmer this afternoon, clear tonight,
• Sunny and a bit warmer Saturday and Sunday, clear both nights.
• highs 85-90 lows 52-54.
• Sunny and a bit warmer Monday and Tuesday, clear at night,
• Mostly sunny and still hot Wednesday, clear at night,
• Then sunny and a bit cooler Thursday.
• highs 95-99 cooling to 94 Thursday lows near 55. (seasonal averages high 84 low 52)

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Eugene-Springfield Pollen Count
Grass………. Moderate (18)
Trees………. Low (2)
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:

• Sunny and a bit warmer this afternoon, clear tonight,
• Sunny and a bit warmer Saturday and Sunday, then clear each night.
• highs 86-93 lows 56-62.
• Sunny and a bit warmer Monday, Tuesday, and Wednesday (a bit cooler), clear each night,
• Then sunny and a bit cooler Thursday.
• highs 96-99 cooling to 97 lows 62-59. (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 at the show while sunny inland and a bit cooler this afternoon, clear this evening, mostly cloudy with patchy fog late tonight and Saturday AM, sunny and a bit warmer Saturday afternoon, mostly clear in the evening and mostly cloudy with patchy coastal fog late while clear inland Saturday night,
• Patchy AM coastal fog, sunny  Sunday afternoon, then mostly clear Sunday night.
• highs 63-68 lows near 55.
• Patchy AM coastal fog, sunny Monday afternoon, mostly clear with patchy fog Monday night and Tuesday AM, mostly sunny and a bit cooler in the afternoon, mostly clear Tuesday night,
• Mostly sunny Wednesday, mostly clear at night,
• Then sunny with patchy fog and a bit warmer Thursday afternoon.
• highs 68-65 lows near 55. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Mostly sunny and a bit warmer today, partly cloudy this evening, clear late tonight,
• sunny and a bit warmer Saturday, partly cloudy in the evening, clear late at night,
• Sunny Sunday, then clear Sunday night.
• free air freezing level above 12,000 ft. today through Saturday, 15,000 ft. Saturday night and Sunday, then15,000 ft. rising to 16,000 ft. Sunday night.
• highs 76-80 lows near 52.
• Sunny Monday AM, partly cloudy in the afternoon and evening, clear at night.
• Sunny Tuesday AM, partly cloudy in the afternoon and Tuesday night,
• Mostly sunny in the AM, partly cloudy Wednesday afternoon and evening, clear late at night,
• Then sunny Thursday AM and party cloudy in the afternoon.
• free air freezing level 16,000 ft. Monday, 16,000 ft. falling to 15,000 ft. Monday night, 15,000 ft. Tuesday, 15,000 ft. rising to 16000 ft. Tuesday night, then 16,000 ft. Wednesday through Thursday.
• highs 83-87 lows near 53.

 

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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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