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August 20, 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

  • A FIRE WEATHER WATCH IS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING FOR ABUNDANT LIGHTNING FOR THE LOWER COLUMBIA BASIN OF OREGON, THE SOUTHERN BLUE AND STRAWBERRY MOUNTAINS, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE CENTRAL BLUE MOUNTAINS, THE WALLOWA DISTRICT, AND THE LOWER COLUMBIA BASIN.

HEALTH ADVISORIES

  • NOTE A CHANGE: 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.
  • A RECREATIONAL HEALTH ADVISORY FOR CRONE MILLER IN BENTON COUNTY DUE THE PRESENCE OF A CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOM AND CYANOTOXINS ABOVE RECREATIONAL USE VALUES FOR HUMAN EXPOSURE HAS BEEN LIFTED. NOTE: OREGON HEALTH AUTHORITY ADVISES DOG OWNERS TO CONTINUALLY BE ALERT TO SIGNS OF CYANOBACTERIA BLOOMS, OR AREAS OF THE LAKE THAT LOOK SUSPICIOUS. 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

The Upper Level High Pressure Ridge (“Arch” shape) down in the Four Corners area of the West has weakened it’s hold on us The graphics for days 1-3 show no frontal systems moving through or into Oregon. The graphics for days 3-7 Tuesday through Saturday show a cold front moving over the Pacific Northwest Tuesday. Another front will be to our northwest Friday then push through Oregon next Saturday.

EUGENE-SPRINGFIELD POLLEN COUNT

  • Mostly clear tonight,
  • Partly cloudy and a bit warmer Sunday, mostly cloudy in the evening, becoming partly cloudy late Sunday night,
  • Mostly sunny and a bit cooler Monday, clear with patchy fog at night,
  • Patchy AM fog, sunny and a bit warmer Tuesday afternoon, then clear Tuesday night.
  • lows 54-57 highs 88-90 cooling back to 88 Tuesday.
  • Sunny and a bit warmer Wednesday and Thursday, clear both nights,
  • Sunny and a bit cooler Friday,clear Friday night,
  • Then mostly sunny Saturday.
  • highs 95-92 lows near 60. (Seasonal Averages high 84 low 51)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear with patchy fog becoming areas of fog late tonight,
  • AM clouds with patchy fog, sunny and a bit warmer Sunday afternoon, partly cloudy in the evening, mostly clear with patchy fog late Sunday night,
  • Areas of AM fog, sunny and a bit cooler Monday afternoon, mostly clear with patchy fog at night,
  • Patchy AM fog, sunny Tuesday, then clear Tuesday night.
  • lows 59-62 highs 92-87.
  • Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
  • Sunny and a bit warmer Thursday, clear at night,
  • Sunny and a bit cooler Friday, mostly clear Friday night,
  • Then mostly sunny and a bit cooler Saturday.
  • highs 93-96 cooling to 91 Saturday lows near 62. (Seasonal Averages high 86 low 57).

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

  • Becoming mostly cloudy with patchy fog late tonight,
  • AM clouds with patchy fog, sunny and a bit warmer Sunday afternoon, mostly cloudy with patchy evening coastal fog and areas of coastal fog late tonight while  mostly cloudy with patchy inland fog Sunday night,
  • Some AM clouds with areas of coastal fog while patchy inland AM fog, sunny Monday afternoon, mostly clear in the evening, mostly cloudy with patchy coastal fog late at night while areas of inland fog late at night,
  • Some AM clouds with patchy fog, sunny and a bit warmer Tuesday afternoon, then partly cloudy Tuesday night.
  • lows near 58 highs near 76.
  • Partly cloudy Wednesday and in the evening, mostly cloudy late Wednesday night,
  • Partly cloudy Thursday through Friday, mostly clear Friday evening, partly cloudy late Friday night,
  • Some AM clouds, then sunny Saturday.
  • highs near 76 lows 60-57 lows . (Seasonal Averages high 67 low 54)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Clear and hazy tonight,
  • Mostly sunny and hazy and a bit warmer Sunday, partly cloudy and hazy Sunday night,
  • Mostly sunny and cooler Monday, clear at night,
  • Mostly sunny and a bit warmer Tuesday, then clear Tuesday night.
  • free air freezing level 15,000 ft. rising to 16,000 ft. late tonight, 15,000 ft. Sunday, 15,000 ft. falling to 14,000 ft. late Sunday night, 14,000 ft. Monday, 15,000 ft. rising to 16,000 ft. late Monday night, then 16,000 ft. Tuesday and Tuesday night.
  • lows 52-48 highs 83-75 warming to 79 Tuesday.
  • Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
  • Mostly sunny Thursday, mostly clear at night,
  • Sunny Friday, mostly clear Friday night,
  • Then mostly sunny Saturday.
  • free air freezing level 15,000 ft. Wednesday and Wednesday night, then 16,000 ft.Thursday through Saturday,
  • highs near 85 lows near 56.

_____

  • 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.