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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 TODAY 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 and surface cold fronts finally brought some rain to the Pacific Northwest. The precipitation has decreased the intensity of the wildfire smoke which can still push into the Pacific Northwest from various areas depending on the wind direction. The graphics for days 1-3  show a frontal system that will moving through Oregon tonight and Monday. The graphics for days 3-7   Thursday through Monday show frontal activity Thursday. Another cold front approaches from the far northwest next Saturday and moving in next Sunday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy a slight (20%) chance of AM showers (under 0.10 in. of rain possible), partly cloudy and a bit cooler this afternoon (Labor Day)  just mostly clear tonight,
  • Mostly sunny and a bit warmer Tuesday, mostly clear at night,
  • Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
  • highs 75-78 lows near 50.
  • Mostly sunny and a bit warmer Thursday, partly cloudy Thursday night,
  • Partly cloudy Friday, mostly clear at night,
  • Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
  • Then partly cloudy with with a slight (20%) chance of showers Sunday.
  • highs 77-82 cooling to 79 Saturday lows near 52 (seasonal averages high 81 low 50)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a good (50%) chance of AM showers, partly cloudy and a bit cooler this afternoon (Labor Day) (under 0.10 in. of rain possible), becoming mostly clear tonight,
  • Sunny and a bit warmer Tuesday, mostly clear at night,
  • Mostly sunny Wednesday, then mostly clear Wednesday night.
  • highs 76-79 lows near 53.
  • Mostly sunny and a bit warmer Thursday, mostly clear in the evening, partly cloudy late Thursday night,
  • Mostly sunny Friday and Saturday, mostly clear Friday night and Saturday night,
  • AM sun with a slight (20%) chance of showers, then partly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon.
  • highs near 82-79 lows near 54. (seasonal averages high 83 low 55)

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

  • Mostly cloudy with a (40%) chance of AM coastal showers and mostly sunny this afternoon while mostly cloudy with g00d (50%), a bit warmer with a good (50%) of AM inland showers and partly cloudy inland this afternoon (Labor Day) (under 0.10 in. of rain possible), becoming mostly clear tonight,
  • Sunny Tuesday, mostly clear in the evening, partly cloudy late at night,
  • AM clouds, sunny Wednesday afternoon, then mostly clear Wednesday night.
  • highs near 73 lows near 54.
  • Mostly sunny and a bit warmer Thursday, partly cloudy Thursday night,
  • Mostly sunny and a bit cooler Friday, mostly clear at night,
  • Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
  • Then partly cloudy and a bit cooler with a slight (20%) chance of showers Sunday.
  •  highs near 74 lows near 54 (seasonal averages high 67 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with a good (50%) chance of AM showers, partly cloudy and a bit cooler this afternoon (Labor Day), just mostly clear tonight,
  • Mostly sunny and a bit warmer Tuesday, mostly clear at night,
  • Mostly sunny and a bit cooler Wednesday, then mostly clear Wednesday night.
  • snow level above 8,000 ft. today, then free air freezing level 13,000 ft. tonight through Tuesday night, 12,000 ft. Wednesday, then 13,000 ft. Wednesday night.
  • highs 58-67 cooling to 65 Wednesday lows 38-42 cooling to 40 Wednesday night
  • Mostly sunny and a bit warmer Thursday, partly cloudy Thursday night,
  • Partly cloudy and a bit warmer Friday, mostly clear at night,
  • Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
  • Mostly sunny start, then partly cloudy and a bit cooler Sunday afternoon.
  • free air freezing level 13,000 ft. Thursday through Sunday.
  • highs 67-72 cooling to 68 Sunday lows 45-43.