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Tim Chuey Weather

by | Sep 13, 2023 | Weather

September 13, 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

A RED FLAG WARNING IS IN EFFECT FROM 5 PM THIS AFTERNOON UNTIL 8 AM THURSDAY FOR EAST WIND WITH POOR OVERNIGHT RELATIVE HUMIDITY RECOVERY FOR THE WESTERN SISKIYOU NATIONAL FOREST.

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 High Pressure  is poised to take over and bring some warming temperatures. The graphics for days 1-3  show another weak cold front trying to move in between today and tomorrow. The graphics for days 3-7   Saturday through Wednesday show a cold front moving into the Pacific Northwest late Saturday into Sunday and another cold front pushing through Monday into next Tuesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly clear tonight,
  • Sunny and warmer Thursday and Friday, clear both nights,
  • Mostly sunny and a bit cooler Saturday, then mostly clear Saturday night.
  • lows near 53 highs 92-93 cooling to 88 Saturday.
  • Mostly sunny and a bit cooler Sunday, partly cloudy with a slight (20%) chance of rain late Sunday night,
  • A mix of clouds and sun with a (30%) chance of rain and a bit cooler Monday, partly cloudy with a slight (20%) chance of evening rain, just partly cloudy at night,
  • Mostly sunny start, partly cloudy and a bit cooler Tuesday afternoon, mostly clear Tuesday night,
  • Then mostly sunny and a bit warmer Wednesday.
  • highs 85-73 warming to 75 Wednesday lows 53-47 (seasonal averages high 79 low 48)

Forecast for the Umpqua Valley including Roseburg:

  • Clear tonight,
  • Sunny and a bit warmer Thursday and Friday, clear both nights,
  • Sunny and a bit cooler Saturday, then mostly clear Saturday night.
  • lows 54-57 highs 93-96 cooling to 92 Saturday.
  • Mostly sunny and a bit cooler Sunday, partly cloudy with a slight (20%) chance of showers late Sunday night,
  • Partly cloudy with a slight (20%) chance of AM showers, mostly cloudy and a bit cooler with a slight (20%) chance of showers Monday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late at night,
  • Sunny and a bit cooler Tuesday, mostly clear Tuesday night,
  • Then mostly sunny and a bit warmer Wednesday.
  • highs 88-74 warming to 77 Wednesday  lows 55-50. (seasonal averages high 81 low 53)

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

  • Mostly clear this evening, becoming mostly cloudy late tonight,
  • AM coastal clouds and sunny and a bit warmer Thursday afternoon while sunny and a bit warmer inland Thursday, mostly cloudy at the shore at night while clear inland in the evening and mostly cloudy with inland haze late Thursday night,
  • AM clouds and hazy, sunny and a bit cooler Friday afternoon, mostly cloudy at night,
  • AM clouds, sunny and a bit cooler Saturday, then mostly clear Saturday night.
  • lows 53-55 cooling back to 53 Saturday night highs 84-74.
  • Mostly sunny Sunday, partly cloudy in the evening, mostly cloudy with a slight (20%) chance of showers late Sunday night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late at night,
  • Mostly sunny Tuesday, mostly clear Tuesday night,
  • Then mostly sunny and a bit warmer Wednesday.
  •  highs 74-72 warming back to 74 Wednesday lows 54-52. (seasonal averages high 67 low 52)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Clear tonight,
  • Sunny and a bit warmer Thursday and Friday, clear both nights,
  • Sunny Saturday, then mostly clear Saturday night.
  • free air freezing level 14,000 ft. tonight, 14,000 ft. rising to 15,000 ft. Thursday afternoon, 15,000 ft. Thursday night, 15,000 ft. falling to 14,000 ft. Friday afternoon, then 14,000 ft. Friday  night through Saturday night.
  • lows 45-52 cooling to 50 Saturday night highs 80-82.
  • Mostly sunny and a bit cooler Sunday, partly cloudy with a slight (20%) chance of rain Sunday night,
  • A mix of clouds and sun with a slight (20%) chance of rain and a bit cooler Monday, mostly cloudy with a slight (20%) chance of evening rain, partly cloudy late at night,
  • Some AM clouds, mostly sunny and a bit cooler Tuesday afternoon, mostly clear Tuesday night,
  • Then mostly sunny and a bit warmer Wednesday.
  • free air freezing level 13,000 ft. Sunday, snow level above 8,000 ft. Sunday night and Monday, 7,500 ft. Monday night, free air freezing level 12,000 ft. Tuesday and Tuesday night, then 11,000 ft. Wednesday.
  • highs 77-58 warming to 62 Wednesday lows 46-36.