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September 11, 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 2 PM TODAY FOR DESCHUTES, UMATILLA, UNION, AND WALLOWA COUNTIES.
  • AN AIR QUALITY ALERT IS IN EFFECT UNTIL 5 PM TODAY FOR   CURRY, DOUGLAS, JACKSON, JOSEPHINE,  KLAMATH, AND LAKE COUNTIES.
  • AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 10 AM TODAY DUE TO EASTERLY WINDS PUSHING WILDFIRE SMOKE AND HOT TEMPERATURES  INTO WESTERN OREGON FOR THE CENTRAL OREGON COAST, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE SOUTH WILLAMETTE VALLEY, THE CASCADE FOOTHILLS IN LANE COUNTY, AND THE CASCADES IN LANE COUNTY.
  • AN AIR QUALITY ADVISORY IS IN EFFECT DUE TO WILDFIRE SMOKE UNTIL 11 AM TODAY FOR MALHEUR COUNTY.

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 High Pressure Ridge (“Arch” shape) slowly weakens switching to onshore airflow and allowing our temperatures to cool down a bit. The graphics for days 1-3 show no frontal systems for Oregon through Monday. The graphics for days 3-7 Wednesday through Sunday show a cold front moving away from the Pacific Northwest Wednesday, then a front to our northwest Friday then pushing through Saturday.Yet another cold front will be approaching from the northwest next Sunday.

Forecast for the South Willamette Valley including Eugene-Springfield:

  • A mix of clouds and sun, hazy and a bit cooler today, mostly cloudy and hazy with a (30%) chance of showers tonight,
  • Partly cloudy with a slight (20%) chance of AM showers, just partly cloudy and a bit cooler Monday afternoon, partly cloudy at night,
  • A mix of clouds and sun and a bit cooler Tuesday, then partly cloudy Tuesday night.
  • highs 87-78 lows 57-50.
  • A mix of clouds and sun Wednesday, partly cloudy Wednesday night,
  • Partly cloudy Thursday and at night,
  • Partly cloudy Friday and in the evening, mostly cloudy with a slight (20%) chance of showers,
  • Then a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Saturday.
  • highs 78-76 lows 52-49. (Seasonal Averages high 80 low 49)

Forecast for the Umpqua Valley including Roseburg:

  • A mix of clouds and sun with haze and patchy smoke and cooler today with a slight (20%) chance of afternoon showers, a slight (20%) chance of showers tonight,
  • Patchy AM and late night fog, mostly sunny and cooler Monday, partly cloudy at night,
  • Patchy AM and late night fog, mostly cloudy and a bit cooler Tuesday afternoon, then mostly cloudy Tuesday night.
  • highs 90-78 lows 60-54.
  • Patchy AM fog, mostly cloudy Wednesday, partly cloudy with patchy fog Wednesday night,
  • Partly cloudy with patchy fog Thursday, partly cloudy at night,
  • Partly cloudy Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
  • Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Saturday.
  • highs 78-76 lows near 53. (Seasonal Averages high 82 low 53).

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

  • A mix of clouds and sun with a slight (20%) chance of showers and a bit warmer today, mostly cloudy with a (40%) chance of evening showers, a slight (20%) chance  of showers with patchy fog late tonight,
  • Patchy AM fog and drizzle, a mix of clouds and sun and a bit cooler Monday afternoon, mostly cloudy with patchy fog at night,
  • Patchy AM and late night fog, then mostly cloudy and a bit cooler Tuesday afternoon and at night.
  • highs 74-72 lows 57-54.
  • Patchy AM and late night fog, mostly cloudy Wednesday and Wednesday night,
  • Patchy AM fog, mostly sunny Thursday afternoon, mostly cloudy at night,
  • Mostly cloudy Friday, a slight (20%) chance of showers Friday night,
  • Then mostly cloudy with a slight (20%) chance of showers Saturday.
  • highs near 72 lows near 54. (Seasonal Averages high 67 low 52)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • A mix of clouds and sun and a bit cooler with areas of smoke today, becoming mostly cloudy with haze and areas of smoke with a slight (20%) chance of showers late tonight,
  • Mostly cloudy with a (30%) chance of AM showers, partly cloudy and a bit cooler with a slight (20%) chance of showers Monday afternoon, just partly cloudy at night,
  • Partly cloudy and a bit cooler Tuesday, then partly cloudy Tuesday night.
  • free air freezing level 16,000 ft. falling to 15,000 ft. late tonight, 15,000 ft. Sunday, snow level above 8,000 ft. Sunday night and Monday, then free air freezing level 13,000 ft. Monday night through Tuesday night.
  • highs 80-67 lows 52-43.
  • A mix of clouds and sun and a bit cooler with patchy drizzle Wednesday afternoon, partly cloudy Wednesday night,
  • AM clouds and sun, sunny and a bit cooler Thursday afternoon, partly cloudy at night,
  • Partly cloudy and a bit warmer Friday, mostly cloudy with a slight (20%) chance of showers Friday night,
  • Then a mix of clouds and sun and a bit cooler with a slight (20%)  of showers Saturday.
  • free air freezing level 12,000 ft. Wednesday and Wednesday night, 11,000 ft. Thursday, 12,000 ft. Thursday night and Friday, then snow level above 8,000 ft. Friday night and Saturday.
  • highs 64-66 cooling to 62 Saturday lows near 42.

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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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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

Posted In Uncategorized

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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.