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Tim Chuey Weather

by | Sep 21, 2023 | Weather

September 21, 2023

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 POLLUTION ADVISORY IS IN EFFECT THROUGH AT LEAST TONIGHT FOR CURRY COUNTY.

HEALTH ADVISORIES

  • A RECREATIONAL USE HEALTH ADVISORY HAS BEEN EXPANDED FOR THE AREA FROM THE ROSS ISLAND LAGOON TO RIVERPLACE MARINA IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS CATCH AND RELEASE FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS. DRINKING WATER FROM THE LAKE IS ESPECIALLY DANGEROUS.
  • A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR THE WILLAMETTE RIVER FROM ROSS ISLAND DOWNSTREAM (NORTH) TO THE AREA NEAR CATHEDRAL PARK IN PORTLAND, IN MULTNOMAH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.DO NOT DRINK THE WATER.
  • A RECREATIONAL USE HEALTH ADVISORY ICONTINUES IN EFFECT FOR ARRONS LAKE, BUT HAS BEEN LIFTED FOR PETE’S SLOUGH AND STURGEON LAKE ON SAUVIE ISLAND DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE AND SLOUGH WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE AREA AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
  • A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR AGENCY LAKE AND EXTENDED THE ADVISORY FOR THE SOUTHERN PORTION OF UPPER KLAMATH LAKE, FROM HOWARD’S BAY SOUTH TO THE LINK RIVER DAM  IN KLAMATH COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE RESERVOIR WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
  • A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE  RIVER.

THE WEATHER PATTERN

Upper Level Low Pressure brings normal temps and a little rain. The graphics for days 1-3  show a cold front approaching the coast Saturday. The graphics for days 3-7   Sunday through Thursday show a frontal system pushing through into Sunday and the next one between Monday and Tuesday.

Note: The Autumnal Equinox occurs Friday at 11:50 PM. That makes Saturday the first full day of Autumn (Fall).

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Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Clear tonight,
  • Sunny and a bit warmer Friday, partly cloudy Friday night (Autumnal Equinox 11:50 pm),
  • AM clouds and sun, becoming mostly cloudy and cooler with a good (50%) of rain Saturday afternoon, evening rain likely (70%), a (30%) chance of rain late at night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday, then showers likely (70%) Sunday night.
  • lows 45-55 highs 80-67.
  • Mostly cloudy with showers and a bit warmer Monday with a slight (20%) chance of afternoon thunderstorms, showers Monday night,
  • Mostly cloudy and a bit cooler with showers Tuesday, showers likely (70%) at night,
  • Mostly cloudy and a bit warmer with showers likely (70%) Wednesday, a good (50%) chance of showers Wednesday night,
  • Then a mix of clouds and sun with a good (50%) chance of showers Thursday.
  • highs 69-65 warming back to 69 Wednesday and Thursday lows 52-50.  (seasonal averages high 76 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Clear with evening haze, tonight, just clear late tonight,
  • Sunny and a bit warmer Friday, mostly clear with evening haze, partly cloudy and hazy Friday night (Autumnal Equinox 11:50 pm),
  • Mostly cloudy with a slight (20%) chance of showers and a bit cooler Saturday afternoon, mostly cloudy with a (40%) chance of shower at night,
  • Mostly cloudy and a bit cooler with a good (50%) chance of showers Sunday afternoon, then showers likely (70%) Sunday night.
  • lows 48-58 highs 83-69.
  • Mostly cloudy with AM showers, showers with a slight (20%) chance of thunderstorms Monday afternoon, showers Monday night,
  • Mostly cloudy and a bit cooler with showers Tuesday, evening showers likely (70%), a good (50%) chance of showers late at night,
  • Mostly cloudy and a bit warmer with a good (50%) chance of showers Wednesday, a (40%) chance of showers Wednesday night,
  • Then mostly cloudy with a (40%) chance of showers Thursday.
  • highs 69-72 lows 54-52. (seasonal averages high 79 low 51)

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

  • Mostly clear and hazy with patchy evening smoke, hazy with patchy fog late tonight,
  • Sunny and hazy and a bit warmer Friday, partly cloudy in the evening at the shore and mostly cloudy with a slight (20%) chance of coastal showers Friday night and a slight (20%) chance of showers late (Autumnal Equinox 11:50 pm) while hazy with inland evening areas of smoke, hazy with patchy fog late Friday night,
  • Mostly cloudy with a (40%) chance of of coastal showers Saturday while patchy AM inland fog showers and a bit cooler with a (30%) chance of inland showers Saturday afternoon (under 0.10 in. of rain possible), cloudy with evening coastal showers likely (70%) and a good (50%) chance of coastal showers late at night while a good (50%) chance of inland showers at night (under 0.10 in. of rain possible),
  • Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) Sunday afternoon, then showers likely (70%) Sunday night.
  • lows 48-58 highs 75-70 warming to 72 Sunday.
  • Mostly cloudy and breezy with AM showers, breezy with showers and a slight (20%) chance of thunderstorms Monday afternoon, showers Monday night,
  • Mostly cloudy with showers Tuesday, showers likely (70%) at night,
  • Mostly cloudy and a bit warmer with showers likely (70%) Wednesday, a good (50%) chance of showers Wednesday night,
  • Then mostly cloudy with a (40%) chance of showers Thursday.
  •  highs 72-69 warming back to 72 Wednesday cooling to 70 Thursday lows 55-53. (seasonal averages high 66 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late tonight,
  • Sunny and a bit warmer Friday, partly cloudy Friday night (Autumnal Equinox 11:50 pm),
  • A mix of clouds and sun and a bit cooler Saturday, cloudy with a good (50%) chance of rain Saturday night,
  • Cloudy and a bit cooler with a good (50%) chance of rain Sunday, then showers likely (70%) Sunday night.
  • snow level 6,500 ft. tonight, free air freezing level 10,000 ft. rising to 11,000 ft. Friday afternoon, 11,000 ft. Friday night, 10,000 ft. Saturday, snow level 7,500 ft. Saturday night, 8,000 ft. Sunday, then above 8,000 ft. Sunday night.
  • lows 32-44 highs 65-54.
  • Mostly cloudy with showers likely (70%) and a bit cooler Monday, showers Monday night,
  • Mostly cloudy with showers and a bit cooler Tuesday, evening showers likely (70%),  a (40%) chance of showers at night,
  • Mostly cloudy and a bit warmer with a good (50%) chance of rain Wednesday, a good(50%) chance of showers Wednesday night,
  • Then a mix of clouds and sun with a good (50%) chance of showers Thursday.
  • snow level above 8,000 ft. Monday, 8,000 ft. Monday night, 7,500 ft. Tuesday and Tuesday night, then 8,000 ft. Wednesday through Thursday.
  • highs 53-49 warming to 54 Wednesday and Thursday lows 38-36.