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September 23, 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

  • NONE AT THIS TIME.

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 is slowly move eastward cutting off the flow of smoke. The graphics for days 1-3 show no frontal systems approaching Oregon. The graphics for days 3-7 Monday through Friday show a frontal system offshore Wednesday, then pushing through the Pacific Northwest Thursday. Then another front will be coming out of the Gulf of Alaska toward us.

Forecast for the South Willamette Valley including Eugene-Springfield:

  • AM clouds and sun, sunny and a bit warmer this afternoon, partly cloudy tonight,
  • Then mostly sunny and a bit warmer Saturday and Sunday, mostly clear both nights,
  • highs 78-84 lows 49-52.
  • Mostly sunny and a bit warmer Monday, mostly clear Monday night,
  • Some AM clouds, mostly sunny and a bit cooler Tuesday afternoon, partly cloudy at night,
  • A mix of clouds and sun and a bit cooler Wednesday, partly cloudy Wednesday night,
  • Then partly cloudy Thursday.
  • highs 85-76 lows near 52. (Seasonal Averages high 76 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • AM clouds, sunny and a bit warmer this afternoon, clear tonight,
  • Sunny and a bit warmer Saturday, mostly clear at night,
  • Mostly sunny and a bit warmer Sunday, then mostly clear Sunday night.
  • highs 79-85 lows 50-55.
  • Mostly sunny Monday, mostly clear Monday night,
  • Mostly sunny and a bit cooler Tuesday, partly cloudy at night,
  • Mostly cloudy and a bit cooler Wednesday and Wednesday night,
  • Then partly cloudy Thursday.
  • highs 87-75 lows 55-57 cooling to back to 55 Tuesday night and Wednesday night. (Seasonal Averages high 78 low 51).

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

  • AM clouds, sunny and a bit warmer this afternoon, mostly clear this evening, partly cloudy late tonight,
  • Sunny and a bit warmer Saturday, partly cloudy at night,
  • Sunny Sunday, then partly cloudy Sunday night.
  • highs 73-77 lows near 54.
  • Partly cloudy and a bit cooler Monday and in the evening, mostly cloudy late Monday night,
  • Partly cloudy and a bit cooler Tuesday, mostly cloudy at night,
  • Then mostly cloudy Wednesday and Wednesday night,
  • The  partly cloudy Thursday.
  • highs 74-72 lows near 54. (Seasonal Averages high 66 low 50)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly sunny and warmer today, mostly clear tonight,
  • Mostly sunny and a bit warmer Saturday, partly cloudy at night,
  • Mostly sunny and a bit warmer Sunday, then mostly clear Sunday night.
  • free air freezing level 13,000 ft. tonight and Friday, then 14,000 ft. Friday night through Sunday night.
  • highs 65-74 lows 42-48.
  • Mostly sunny Monday, mostly clear Monday night,
  • Mostly sunny and a bit cooler Tuesday, partly cloudy at night,
  • Partly cloudy and a bit cooler Wednesday, partly cloudy Wednesday night,
  • Then partly cloudy and a bit cooler Thursday.
  • free air freezing level 14,000 ft. Monday through Tuesday, 13,000 ft. Tuesday night, 11,000 ft. Wednesday, 10,000 ft. Wednesday night, then 11,000 ft. Thursday.
  • highs 74-63 lows 47-42.
  • 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.