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Tim Chuey Weather

by | Sep 4, 2023 | Weather

September 4, 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 QUALITY ALERT IS IN EFFECT UNTIL 2 PM TUESDAY FOR WILDFIRE SMOKE FOR COOS COUNTY AND DOUGLAS 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

An Upper Level Low Pressure Trough remains in control. Continued onshore airflow continues normal temperatures. The graphics for days 1-3  show a frontal system that will moving through Oregon Wednesday. The graphics for days 3-7   Thursday through Monday show frontal activity Thursday and Friday. Another cold front will push through the Pacific Northwest next Monday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy tonight,
  • Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear both nights,
  • Some AM clouds, mostly sunny Thursday, then partly cloudy Thursday night.
  • lows 49-52 cooling to 50 Thursday night highs 77-79.
  • Mostly sunny Friday, mostly clear Friday night,
  • Mostly sunny and a bit warmer Saturday, mostly clear at night,
  • Mostly sunny with with a slight (20%) chance of AM rain, partly cloudy and a bit cooler with a slight (20%) chance of rain Sunday afternoon,
  • Some AM clouds, then mostly sunny Monday.
  • highs 79-82 cooling to 80 Sunday and Monday lows 50-54 (seasonal averages high 81 low 50)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear tonight,
  • Sunny and a bit warmer Tuesday and Wednesday, mostly clear both nights,
  • Sunny Thursday, mostly clear in the evening, then partly cloudy late Thursday night.
  • lows 52-55 cooling to 53 Thursday night highs 79-82.
  • Mostly sunny and a bit warmer Friday, mostly clear Friday night,
  • Sunny and a bit warmer Saturday, mostly clear at night,
  • Sunny with a slight (20%) chance of showers Sunday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
  • Some AM clouds, then sunny Monday afternoon.
  • highs near 82-84 lows 54-57. (seasonal averages high 83 low 55)

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

  • Mostly clear this evening, partly cloudy late tonight,
  • Sunny and a bit warmer Tuesday, mostly clear in the evening, partly cloudy late Tuesday night,
  • AM clouds, sunny Wednesday afternoon, mostly clear in the evening, mostly cloudy late at night,
  • Partly cloudy Thursday, then partly cloudy Thursday night.
  • lows 52-54 highs near 74.
  • Mostly sunny and a bit cooler Friday and Saturday, mostly clear both nights,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Sunday and in the evening, just partly cloudy Sunday night,
  • Then sunny Monday.
  •  highs near 73-75 lows 53-56 (seasonal averages high 67 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly clear tonight,
  • Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear both nights,
  • Mostly sunny and a bit warmer Thursday, then partly cloudy Thursday night.
  • free air freezing level 13,000 ft. tonight through Thursday, then 12,000 ft. Thursday night.
  • lows 38-44 highs 67-69.
  • Mostly sunny and a bit warmer Friday and Saturday, mostly clear both nights,
  • Mostly sunny and a bit cooler Sunday, partly cloudy with a slight (20%) chance of evening rain, just partly cloudy Sunday night,
  • Then mostly sunny and a bit cooler Monday.
  • free air freezing level 13,000 ft. Friday and Friday night, 12,000 ft. Saturday, 13,000 ft. Saturday night and Sunday, snow level above 8,000 ft, then free air freezing level 14,000 ft. Monday.
  • highs 70-73 cooling to 70 Tuesday lows near 45.