Sunshine and even a bit cooler for your Saturday today.

Check out my latest Eugene Daily News “Weather Or Not” column now at:

Do It Often, With What?

Here is my weekly weather quiz question. What is a “Spring Tide?” The First person to post the correct answer as a comment will win a week of free personalized weather forecasts tailored to your needs. 

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ADVISORIES: None

HEALTH ADVISORIES:

  • THE OREGON HEALTH AUTHORITY HAS ISSUED A RECREATIONAL USE HEALTH ADVISORY FOR ODELL LAKE IN KLAMATH COUNTY DUE TO THE PRESENCE OF CYANOBACTERIA (HARMFUL ALGAE) BLOOM THAT HISTORICALLY PRODUCES CYANOTOXINS (HARMFUL ALGAE TOXINS) ABOVE RECREATIONAL GUIDELINE VALUES FOR HUMAN EXPOSURE. UNTIL THE ADVISORY IS LIFTED PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE WHERE BLOOMS ARE IDENTIFIED. ALTHOUGH TOXINS ARE NOT ABSORBED THROUGH THE SKIN, PEOPLE WITH SKIN SENSITIVITIES MAY EXPERIENCE A PUFFY RED RASH. VISITING ODELL LAKE IS SAFE AS LONG AS ANY BOATING OR OTHER ACTIVITIES DO NOT CAUSE EXCESSIVE WATER SPRAY WHICH COULD LEAD TO INHALATION RISKS IF THERE IS EXCESSIVE WATER SPRAY.

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THE WEATHER PATTERN:

  • An Upper Level Low Pressure Trough (Shaded “U” shape with arrows) brings cooler weather.  The graphics for days 1-3 show a couple of waves of cooler air headed our way. The graphics for days 3-7 Tuesday through next Saturday show a frontal system pushing through Thursday. Yet another complex frontal system will move in next Saturday.

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THE AIR QUALITY INDEX:

For the local area:

Eugene/Springfield: The Air Quality Index is 19 in the Good category measuring Ozone.

Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 21 in the Good category measuring Ozone.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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FORECASTS:

Forecast for the Southern Willamette Valley including Eugene-Springfield

  • AM clouds and sun, mostly sunny and a bit cooler this afternoon, mostly clear tonight,
  • AM sun, partly cloudy and a bit warmer Sunday afternoon, partly cloudy at night,
  • Partly cloudy and a bit cooler Monday with a slight (20%) chance of AM rain, then mostly clear Monday night.
  • highs 83-85 cooling to 82 Monday lows 55-53.
  • Mostly sunny Tuesday, clear Tuesday night,
  • Sunny Wednesday and Thursday, clear both nights,
  • Then mostly sunny Friday.
  • highs near 82 lows 54-52. (seasonal averages high 84 low 52)

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Eugene-Springfield Pollen Count:

Grass………. LOW (3)

Trees………. LOW (5)

Last Counted: 7/31/20

Data Courtesy of Oregon Allergy Associates

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Forecast for the Umpqua Valley including Roseburg:

  • Hazy with some AM clouds, sunny and hazy and a bit cooler this afternoon, mostly clear and hazy late tonight, (The persistent haze is from fires in Northern California)
  • Some AM clouds, sunny Sunday, mostly clear at night,
  • Partly cloudy and a bit cooler Monday, then mostly clear Monday night.
  • highs 88-85 lows near 60.
  • Mostly sunny and a bit warmer Tuesday, clear Tuesday night,
  • Sunny and a bit warmer Wednesday and Thursday, clear both nights,
  • Then mostly sunny Friday.
  • highs near 87 lows near 58. (seasonal averages high 86 low 57)

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Forecast for the Oregon Coast including Coos Bay and North Bend

  • Mostly cloudy with patchy AM coastal fog, sunny and a bit warmer this afternoon, partly cloudy  with patchy coastal fog late tonight,
  • Partly cloudy Sunday and at night,
  • AM clouds, partly cloudy Monday afternoon and Monday night.
  • highs near 72 lows 55-57 cooling to 54 Monday night.
  • Partly cloudy Tuesday, mostly clear Tuesday night,
  • Mostly sunny Wednesday and Thursday, mostly clear both nights,
  • Then  mostly sunny Friday.
  • highs near 72 lows near 53 (seasonal averages high 65 low 53)

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Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Some AM clouds, mostly sunny and a bit cooler this afternoon, clear tonight,
  • Mostly sunny and a bit cooler Sunday, mostly clear at night,
  • Mostly sunny and a bit cooler Monday with a slight (20%) chance of afternoon showers, then becoming partly cloudy Monday night.
  • free air freezing level 15,000 ft. today, 16,000 ft. tonight, 16,000 ft. falling to 15,000 ft. Sunday afternoon, 14,000 ft. Sunday night, snow level above 8,000 ft. Monday, then free air freezing level 15,000 ft. Monday night.
  • highs 76-69 lows 48-43.
  • Mostly sunny and a bit warmer Tuesday, clear Tuesday night,
  • Sunny and a bit warmer Wednesday, clear at night,
  • Then sunny and a bit cooler Thursday and Friday, clear Thursday night.
  • free air freezing level 16,000 ft. falling to 15,000 ft. Tuesday afternoon, then 15,000 ft. Tuesday night through Friday.
  • highs 73-75 cooling back to 73 Friday lows near 48.

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Note: Weather is a constantly changing phenomenon and weather forecasting is a combination of science, experience, and intuition. The accuracy of any given forecast can change due to unexpected changes in atmospheric conditions, so there are no guarantees that the actual weather will conform to the projected forecast.

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For all of your Lane County and Eugene-Springfield News, Weather and Sports go to: eugenedailynews.com

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