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September 22, 2022

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 chance due to unexpected changes in atmospheric conditions, so there are no guarantees the the actual weather will conform to the projected forecast.

ADVISORIES

  • AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 11 AM FRIDAY FOR THE CASCADE FOOTHILLS IN LANE COUNTY AND THE CASCADES IN LANE COUNTY DUE TO WILDFIRE SMOKE.

HEALTH ADVISORIES

  • A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR ALL OF UPPER KLAMATH LAKE IN KLAMATH COUNTY INCLUDING SHOALWATER BAY DUE THE PRESENCE OF A CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOM AND CYANOTOXINS ABOVE RECREATIONAL USE VALUES FOR HUMAN EXPOSURE. PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE WHERE BLOOMS ARE, AS THE MAJOR RISK OF EXPOSURE IS FROM INGESTING WATER. THESE TOXINS ARE NOT ABSORBED THROUGH THE SKIN. HOWEVER, IF YOU HAVE SKIN SENSITIVITIES  YOU MAY GET A PUFFY RED RASH. IT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SPECIAL CARE SHOULD BE TAKEN WITH CHILDREN, ESPECIALLY THE YOUNGER ONES, WHEN THEY ARE NEAR THE WATER.
  • NOTE: A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE WILLAMETTE RIVER NEAR CATHEDRAL PARK IN NORTH PORTLAND  DUE THE PRESENCE OF A CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOM AND CYANOTOXINS ABOVE RECREATIONAL USE VALUES FOR HUMAN EXPOSURE. IT HAS BEEN EXPANDED UPSTREAM (SOUTH) TO THE WILLAMETTE COVE AREA NEAR THE SP&S RAILROAD BRIDGE. PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE WHERE BLOOMS ARE, AS THE MAJOR RISK OF EXPOSURE IS FROM INGESTING WATER. THESE TOXINS ARE NOT ABSORBED THROUGH THE SKIN. HOWEVER, IF YOU HAVE SKIN SENSITIVITIES  YOU MAY GET A PUFFY RED RASH. IT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SPECIAL CARE SHOULD BE TAKEN WITH CHILDREN, ESPECIALLY THE YOUNGER ONES, WHEN THEY ARE NEAR THE WATER. BLOOMS CAN DEVELOP AND DISAPPEAR ON ANY BODY OF WATER AT ANY TIME, EVEN IN THE FALL AND WINTER IF CONDITIONS ARE FAVORABLE. ONLY A FRACTION OF WATER BODIES IN OREGON ARE MONITORED FOR CYANOBACTERIA, BLOOMS AND TOXINS DURING THE RECREATION SEASON, AND NO MONITORING OR SAMPLING IS PERFORMED ONCE RECREATION SEASON HAS ENDED. IT IS VERY IMPORTANT FOR PEOPLE TO BECOME FAMILIAR WITH SIGNS OF BLOOM, EXPOSURES, AND SYMPTOMS BY VISITING OHA’S CYANOBACTERIA HARMFUL ALGAE BLOOM WEBSITE AT:  http://www.healthoregon.org/hab.
  • A PERMANENT RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE SOUTH UMPQUA RIVER AND MAINSTEM UMPQUA RIVER. THE ADVISORY COVERS THE SOUTH UMPQUA RIVER FROM CANYONVILLE DOWNSTREAM TO THE CONFLUENCE OF THE MAINSTEM UMPQUA RIVER, AND THE MAINSTEM UMPQUA RIVER DOWNSTREAM PAST ELKTON TO LAWSON BAR. PEOPLE IN THE BEDROCK ALONG THE RIVERS EDGE ARE ARE KNOWN TO DEVELOP CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED AT SEVERAL ACCESS AREAS ALONG THE RIVER.

THE WEATHER PATTERN

  • An Upper Level Closed Low Pressure Area (“O” shape) hovers off the California coastline keeping the chance of showers with us. It spun the air in from the southeast to bring high levels of particulate matter from the Cedar Creek wildfire. The low will slowly move eastward cutting off the flow of smoke, but that will take a while to clear it out. The graphics for days 1-3 show a frontal system to our northwest Friday. The graphics for days 3-7 Sunday through Thursday show a frontal system well to our northwest next Thursday.

Forecast for the South Willamette Valley including Eugene-Springfield:

  • Mostly cloudy start, partly cloudy and a bit warmer this afternoon (Autumnal Equinox 6:03 pm), partly cloudy tonight,
  • Some AM clouds with patchy fog, mostly sunny and a bit warmer Friday afternoon, mostly clear at night,
  • Mostly sunny and a bit warmer Saturday, then mostly clear Saturday night.
  • highs 74-82 lows 48-50.
  • Sunny and a bit warmer Sunday, mostly clear Sunday night,
  • Mostly sunny and a bit warmer Monday, mostly clear at night,
  • Some AM clouds, mostly sunny and a bit cooler Tuesday afternoon, partly cloudy Tuesday night,
  • Then a mix of clouds and sun and a bit cooler Wednesday.
  • highs 83-77 lows 50-52. (Seasonal Averages high 76 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Some AM clouds, sunny and warmer this afternoon (Autumnal Equinox 6:03 pm), mostly clear this evening, partly cloudy late tonight,
  • Some AM clouds, sunny and a bit warmer Friday afternoon, clear at night,
  • Sunny and a bit warmer Saturday, then mostly clear Saturday night.
  • highs 77-82 lows 50-52.
  • Sunny and a bit warmer Sunday, mostly clear Sunday night,
  • Mostly sunny Monday, mostly clear at night,
  • Partly cloudy and a bit cooler Tuesday through Wednesday.
  • highs 86-78 lows near 55. (Seasonal Averages high 78 low 51).

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

  • Mostly cloudy start, partly cloudy and a bit warmer this afternoon (Autumnal Equinox 6:03 pm), partly cloudy tonight,
  • Some AM clouds, sunny and warmer Friday, mostly clear at night,
  • Sunny and a bit warmer Saturday, then mostly clear Saturday night.
  • highs 72-76 lows near 53.
  • Mostly sunny Sunday and Monday, mostly clear both nights,
  • Partly cloudy and a bit cooler Tuesday, mostly cloudy Tuesday night,
  • Then mostly cloudy and a bit cooler Wednesday.
  • highs 76-72 lows near 54. (Seasonal Averages high 66 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • AM clouds and sun, mostly sunny and a bit warmer this afternoon (Autumnal Equinox 6:03 pm), mostly clear tonight,
  • Mostly sunny and warmer Friday, mostly clear at night,
  • free air freezing level 10,000 ft. rising to 12,000 ft. this afternoon, 13,000 ft. tonight and Friday, 13,000 ft. rising to 14,000 ft. late Friday night, 14,000 ft. Saturday, then 15,000 ft. Saturday night.
  • highs 55-70 lows 37-45.
  • Mostly sunny and a bit warmer Sunday, mostly clear Sunday night,
  • Mostly sunny Monday, mostly clear at night,
  • Mostly sunny and a bit cooler Tuesday, partly cloudy Tuesday night,
  • Then partly cloudy and a bit cooler Wednesday.
  • free air freezing level 15,000 ft. Sunday, 15,000 ft. falling to 14,000 ft. Sunday night, 14,000 ft. Monday through Tuesday night, then 13,000 ft. Wednesday.
  • highs 73-67 lows near 46.
  • For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com

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8/ 22 Plenty of sunshine, but cooler to start your workweek today.

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

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Mostly clear again tonight, then sunshine and slightly cooler for your Friday.

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

  • Becoming mostly cloudy late tonight,
  • Some AM clouds, sunny and a bit warmer Friday afternoon, clear in the evening, partly cloudy late Friday night,
  • Mostly cloudy start, partly cloudy and slightly cooler Saturday afternoon, mostly clear at night,
  • Mostly sunny Sunday, then mostly clear Sunday night.
  • lows 54-56 cooling back to 54 Sunday night highs 70-69.
  • Mostly sunny and a bit warmer Monday, mostly clear Monday night,
  • Partly cloudy and slightly cooler Tuesday, partly cloudy at night,
  • Then partly cloudy Wednesday through Thursday.
  • highs 73-72 lows 54-56 cooling back to 54 Wednesday night. (Seasonal Averages high 66 low 54)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly clear tonight,
  • Mostly sunny and a bit cooler Friday, clear Friday night,
  • Sunny and a bit warmer Saturday, mostly clear at night,
  • Some AM clouds, mostly sunny and a bit cooler Sunday, then clear Sunday night.
  • free air freezing level 15,000 ft. falling to 14,000 ft. late tonight, 14,000 ft. rising to 15,000 ft. Friday afternoon, 15,000 ft. Friday night through Sunday, then 16,000 ft. Sunday night.
  • lows 49-47 highs 74-72 warming back to 74 Sunday.
  • Sunny and a bit warmer Monday, clear Monday night,
  • Sunny Tuesday, mostly clear at night,
  • Then mostly sunny and a bit cooler Wednesday and Thursday, mostly clear Wednesday night.
  • free air freezing level 16,000 ft. Monday through Thursday.
  • highs 80-75 lows 53-50.