Here is my weekly weather quiz question for the last time. What is a “Jet Max?” Here is the correct answer. A Jet Max (or Jet Streak) is a point or area of relative maximum wind speeds within a jet stream. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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Not much relief from the drought, but with northwesterly winds at least we clear out some smoke. A couple of upper level lows (Shaded “U” shapes with blue arrows) will march out of the Gulf of Alaska at us. That will keep us in cooler temperatures for short a while. A high pressure ridge (Shaded “Arch” shape with blue arrows on previous graphic) will really heat us up Tuesday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 62 in the Moderate category measuring Particulate Matter.

Oakridge: The Air Quality Index is 10 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 35 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories:

• A HEALTH ADVISORY CONTINUES FOR SUNSET BAY STATE PARK BEACH LOCATED IN COOS COUNTY FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.
• A HEALTH ADVISORY CONTINUES FOR UPPER KLAMATH LAKE AND AGENCY LAKE DOWN TO KENO DAM, LOCATED JUST NORTH OF KLAMATH FALLS ALONG HIGHWAY 97 IN KLAMATH COUNTY. THE SECTION FROM THE KENO DAM TO THE CALIFORNIA BORDER HAS BEEN CLEARED FOR USE. WATER MONITORING BY THE USGS HAS CONFIRMED THE PRESENCE OF BLUE-GREEN ALGAE TOXINS WHICH CAN BE HARMFUL TO HUMANS AND ANIMALS. SWALLOWING, INHALING OR SKIN CONTACT WITH WATER DROPLETS SHOULD BE AVOIDED.
• A HEALTH ADVISORY CONTINUES FOR SEAL ROCK STATE PARK BEACH FOR HIGHER-THAN-NORMAL FECAL BACTERIA WHICH CAN RESULT IN DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. DIRECT CONTACT WITH THE WATER – ESPECIALLY BY CHILDREN AND THE ELDERLY, WHO MAY BE VULNERABLE TO WATERBORNE BACTERIA  – SHOULD BE AVOIDED IN THIS AREA UNTIL THE ADVISORY IS LIFTED. VISITORS  SHOULD AVOID WADING IN NEARBY CREEKS, POOLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.

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

• Clear with patchy smoke tonight,
• Sunny and warmer with patchy smoke Monday, clear with patchy smoke Monday night,
• Sunny and warmer, hot, with patchy smoke Tuesday, patchy evening smoke, clear late Tuesday night,
• Sunny, still hot, Wednesday, then clear Wednesday night.
• lows 54-59 cooling to 57 Wednesday night highs 92-100 cooling to 96 Wednesday.
• Sunny and a bit cooler Thursday, partly cloudy Thursday night and Friday AM, mostly sunny and still cooler in the afternoon, mostly clear Friday night,
• Sunny and a bit warmer Saturday and Sunday, clear Saturday night.
• highs 82-80 warming to 86 Saturday and Sunday lows 55-52 warming to 56 Saturday night. (seasonal averages high 83 low 51)

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Forecast for the Umpqua Basin including Roseburg:

• Clear with areas of smoke tonight,
• Sunny with haze and areas of smoke Monday and Tuesday, clear with haze and areas of smoke each night,
• Mostly sunny and a bit cooler with areas of smoke Wednesday, mostly clear with areas of smoke at night.
• lows 57-59 highs 90-99.
• Mostly sunny, hazy and cooler Thursday and Friday, mostly clear Thursday night, clear Friday night,
• Sunny, hazy and a bit warmer Saturday and Sunday, mostly clear and hazy Saturday night.
• highs 95-85 warming to 88 Saturday lows near 58. (seasonal averages high 85 low 56)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:

• Mostly clear tonight,
• Sunny Monday, Tuesday and Wednesday, mostly clear Monday night and Tuesday night, partly cloudy Wednesday night.
• lows near 56 highs 66-70.
• Partly cloudy and a bit cooler Thursday, mostly clear Thursday night,
• Mostly sunny Friday and Saturday, mostly clear both nights,
• Then sunny Sunday.
• highs 65-67 lows near 56. (seasonal averages high 65 low 53)

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Forecast for the Cascades in Lane County:

• Clear tonight,
• Sunny and warmer with patchy smoke Monday, Tuesday and sunny and a bit cooler Wednesday, clear with patchy smoke each night.
• free air freezing level 15,000 ft. tonight through Wednesday night,
• lows 44-52 highs 80-85 cooling back to near 80 Wednesday.
• Sunny and cooler Thursday and Friday, sunny and warmer Saturday and Sunday, clear each night.
• free air freezing level 15,000 ft. Thursday and Thursday night, 14,000 ft. Friday, then 15,000 ft. Friday night through Sunday.
• highs 82-70 warming to 74 Saturday lows 47-44.

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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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