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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A series of Upper Level Lows (Shaded “U”shape with blue arrows) will keep enough moisture available for possible showers and thunderstorms in the mountains and to the south of Lane county. The graphics for days days 1-3 show a weak frontal system moving over the coast Wednesday. The graphics for days 3-7 show a frontal system trying to make an impact on us next Monday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 26 in the Good category measuring Ozone.

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

Cottage Grove: The Air Quality Index is 34 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

 

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Advisories:

• 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.
• A RED FLAG WARNING IS IN EFFECT FROM 11 AM UNTIL 11 PM WEDNESDAY 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 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 RED FLAG WARNING IS IN EFFECT UNTIL 11 PM THIS EVENING 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.
• A RED FLAG WARNING IS IN EFFECT FROM 11 AM UNTIL 11 PM WEDNESDAY FOR ABUNDANT DRY LIGHTNING WITH DRY FUELS FOR THE UMPQUA NATIONAL FOREST.
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR ABUNDANT DRY LIGHTNING WITH DRY FUELS FOR THE UMPQUA NATIONAL FOREST.

 

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

• Sunny today, clear this evening, partly cloudy late tonight,
• AM clouds, mostly sunny and a bit cooler Wednesday afternoon, mostly clear at night,
• Sunny and a bit cooler Thursday, clear in the evening, then partly cloudy late Thursday night.
• highs 88-84 lows 56-53.
• Partly cloudy Friday AM, mostly sunny in the afternoon, partly cloudy Friday night  and Saturday AM, mostly sunny and a bit warmer Saturday afternoon and Sunday, mostly clear at night,
• Then sunny Monday.
• highs 84-89 lows near 54. (seasonal averages high 84 low 52)

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Eugene-Springfield Pollen Count
Grass………. Moderate (9)
Trees………. Low (5)
Last Counted: 7/20/17
Data Courtesy of Oregon Allergy Associates.
Note: It would seem the pollen season just about over.

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Forecast for Roseburg:

• Partly cloudy with a slight (20%) chance of thunderstorms today and tonight,
• Partly cloudy in the AM, sunny and a bit cooler Wednesday afternoon, mostly clear at night,
• Sunny and a bit cooler Thursday, then clear at night.
• highs 90-88 lows 62-58.
• Sunny Friday, clear at night,
• Sunny and a bit warmer Saturday, Sunday, and Monday, clear each night.
• highs 88-92 lows near 57. (seasonal averages high 86 low 57)

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

• Cloudy with patchy fog this AM, partly cloudy and a bit cooler with a slight (20%) chance of inland thunderstorms this afternoon and evening, mostly cloudy with patchy fog late tonight,
• Mostly cloudy with patchy AM fog, partly cloudy Wednesday afternoon and evening, mostly cloudy late Wednesday night and Thursday AM, mostly sunny and a bit warmer in the afternoon, then partly cloudy with patchy fog late Thursday night.
• highs 64 lows near 55.
• Partly cloudy with patchy AM and late night fog Friday,
• Mostly sunny and a bit warmer Saturday, Sunday, mostly clear each night,
• Mostly sunny and a bit cooler Monday.
• highs 63-67 cooling to 64 Monday lows near 55. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Partly cloudy and a bit warmer with a slight (20%) chance of showers and thunderstorms this afternoon, a slight (20%) chance of showers and thunderstorms tonight,
• Partly cloudy and a bit cooler Wednesday and and in the evening, clear late at night,
• Mostly sunny and a bit cooler Thursday, then mostly clear Thursday night.
• snow level above 8,000 ft. today and tonight, then free air freezing level 14,000 ft. Wednesday through Thursday night.
• highs 79-75 lows 53-50.
• Mostly sunny and a bit warmer Friday, Saturday, and Sunday, mostly clear each night,
• Then sunny Monday.
• free air freezing level 12,000 ft. Friday, 15,000 ft. Friday night through Sunday night, then 15,000 ft. rising to 16,000 ft. Monday.
• highs 76-82 lows near 50.

 

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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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