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 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 Pacific Northwest Wednesday. The graphics for days 3-7 show a frontal system trying to make an impact on us Sunday night and another front approaching the coast next Tuesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 45 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 23 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 61 in the Moderate 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 10 PM THIS EVENING FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR THE DESCHUTES NATIONAL FOREST AND THE MINUS SISTERS RANGER DISTRICT.
• A FIRE WEATHER WATCH IS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT FOR ABUNDANT LIGHTNING AND GUSTY OUTFLOW WINDS FOR THE DESCHUTES NATIONAL FOREST AND THE MINUS SISTERS RANGER DISTRICT.
• A RED FLAG WARNING IS IN EFFECT 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.
• A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM WEDNESDAY FOR ABUNDANT DRY LIGHTNING WITH DRY FUELS FOR THE UMPQUA NATIONAL FOREST.
• 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:

• Clear tonight,
• AM clouds, sunny Wednesday afternoon, mostly clear at night,
• AM clouds, sunny and a bit cooler Thursday afternoon, clear Thursday night,
• Partly cloudy Friday AM, sunny and a bit warmer in the afternoon, clear in the evening, then partly cloudy Friday night
• lows 56-53 highs 86-82.
• Partly cloudy Saturday AM, mostly sunny and a bit warmer in the afternoon, mostly clear Saturday night,
• Mostly sunny and a bit warmer Sunday, clear at night,
• Sunny and a bit warmer Monday, clear at night,
• Then sunny and a bit cooler Tuesday.
• highs 86-89 cooling to 87 Tuesday 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 isolated thunderstorms tonight,
• Mostly sunny and a bit cooler with a slight (20%) chance of isolated thunderstorms Wednesday and in the evening, mostly clear at night,
• AM clouds, sunny and a bit cooler Thursday afternoon, clear at night,
• Sunny Friday, then clear Friday night.
• lows 62-57 highs 90-88.
• Sunny and a bit warmer Saturday, Sunday, and Monday, clear each night,
• Then sunny and a bit cooler Tuesday.
• highs 92-94 cooling back to 92 Tuesday lows 58-60. (seasonal averages high 86 low 57)

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

• Mostly cloudy tonight,
• Mostly cloudy a slight (20%) chance of AM coastal rain and drizzle, partly cloudy Wednesday afternoon and at night,
• Mostly cloudy and a bit warmer Thursday with patchy AM fog, mostly cloudy with patchy coastal fog at night while mostly clear inland Thursday night,
• Partly cloudy  Friday with patchy AM and late night fog.
• lows near 55 highs near 63.
• Mostly cloudy with patchy AM fog, sunny and a bit warmer Saturday afternoon, partly cloudy in the evening, mostly clear Saturday night,
• Sunny Sunday, clear at night,
• Then mostly sunny and a bit cooler Monday and Tuesday, mostly clear Monday night.
• highs 67-70 cooling to 63 Tuesday lows near 55. (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, just partly cloudy tonight and Wednesday AM, a slight (20%) chance of showers and thunderstorms in the afternoon and in the evening, clear late Wednesday night,
• Mostly sunny and a bit cooler Thursday, clear Thursday night,
• Sunny and a bit warmer Friday, clear at night.
• snow level above 8,000 ft. tonight through Wednesday evening, free air freezing level above 12,000 ft. Thursday through Friday night.
• lows 53-50 highs 76-74 warming back to 76 Friday.
• Sunny and a bit warmer Saturday, clear at night,
• Mostly sunny and a bit warmer Sunday, mostly Sunday night,
• Then sunny Monday and Tuesday, clear Monday night.
• free air freezing level above 12,000 ft. Saturday through Tuesday.
• highs 78-80 lows near 52.

 

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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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