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Tim Chuey Weather

by | Sep 1, 2023 | Weather

September 1, 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

  • NONE AT THIS TIME.

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 bring some rain to the Pacific Northwest. The precipitation should decrease 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 Sunday. The graphics for days 3-7   Monday through Friday show frontal activity Monday, then Wednesday and Thursday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy and hazy with a slight (20%) chance of evening showers, just partly cloudy late tonight (under 0.10 in. of rain possible),
  • Partly cloudy and a bit warmer with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Saturday afternoon (0.10 in. of rain possible, more in storms), becoming mostly cloudy with a good (50%) chance of evening showers and a slight (20%) chance of thunderstorms, partly cloudy with a slight (20%) chance of showers late Saturday night (0.10 in. of rain possible, more in storms),
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday, showers likely (70%) at night,
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Monday (Labor Day), then just partly cloudy Monday night.
  • lows 59-56 highs 82-75.
  • Partly cloudy and a bit warmer Tuesday and Wednesday, partly cloudy both nights,
  • Partly cloudy and a bit warmer Wednesday, partly cloudy at night,
  • Some AM clouds, then mostly sunny and a bit warmer Thursday afternoon and Friday, mostly clear Thursday night,
  • highs 75-79 lows near 52 (seasonal averages high 82 low 50)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy and hazy with a (30%) chance of evening scattered showers and isolated thunderstorms, partly cloudy with a (30%) chance of isolated showers late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with isolated AM showers, a bit warmer with showers and isolated thunderstorms Saturday afternoon, a good (50%) chance of scattered evening  showers and thunderstorms (0.10 in. of rain possible), isolated showers late Saturday night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with a slight (20%) chance showers Sunday, a (30%) chance of showers at night,
  • Mostly cloudy with a (30%) chance of AM showers, partly cloudy with a (30%) chance of showers Monday afternoon (Labor Day), then becoming mostly clear Monday night.
  • lows near 59 highs 73-75 cooling back to 73 Sunday.
  • Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
  • Mostly sunny Wednesday and Thursday, mostly clear both nights,
  • Then mostly sunny Friday.
  • highs near 75 lows near 54. (seasonal averages high 84 low 55)

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

  • Mostly cloudy with evening haze and a (30%) chance of showers , a (30%) chance of showers with patchy fog late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with a (40%) chance of isolated AM showers, a bit warmer Saturday with a (40%) chance of scattered afternoon showers (under 0.10 in. of rain possible), a (30%) chance of scattered evening showers, a (30%) chance of isolated inland showers late Saturday night,
  • Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday, a (40%) chance of showers at night,
  • Mostly cloudy with a (40%) of AM showers, partly cloudy and a bit cooler with a (30%) of showers Monday afternoon (Labor Day), then just mostly clear Monday night.
  • lows 57-54 highs 75-73.
  • Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
  • Mostly sunny Wednesday, mostly clear in the evening, partly cloudy late at night,
  • Then mostly sunny Thursday and Friday, mostly clear Thursday night,
  •  highs near 75 lows near 54 (seasonal averages high 67 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy with a good (50%) chance of evening showers and thunderstorms, just partly cloudy tonight (under 0.10 in. of rain possible, more in storms),
  • Partly cloudy with a slight (20%) chance of AM showers, a bit warmer with showers likely (70%) and a (40%) chance of thunderstorms Saturday afternoon (0.10 in. of rain possible, more in storms), mostly cloudy with evening showers likely (70%) and a (40%) chance of thunderstorms, mostly cloudy with evening showers likely (70%), a (30%) chance of showers late Saturday night,
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday, mostly cloudy with evening showers likely (70%), a good (50%) chance of showers at night,
  • A mix of clouds and sun with a good (50%) chance of AM showers, a bit cooler Monday afternoon (Labor Day) with a (40%) chance of showers, just partly cloudy Monday night.
  • snow level above 8,000 ft. tonight through Monday, then free air freezing level 13,000 ft. Monday night.
  • lows 40-43 highs 66-70.
  • Some AM clouds, mostly sunny and a bit warmer Tuesday afternoon, partly cloudy Tuesday night,
  • Mostly sunny Wednesday, partly cloudy at night,
  • Mostly sunny and a bit warmer Thursday and Friday, mostly clear Thursday night,
  • free air freezing level 13,000 ft. Tuesday through Friday.
  • highs 62-70 cooling to 68 Wednesday warming back to 70 Thursday lows near 42.