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Tim Chuey Weather

by | Sep 20, 2023 | Weather

September 20, 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 FREEZE WARNING IS IN EFFECT FROM 2 AM  UNTIL 9 AM THURSDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
  • AN AIR POLLUTION ADVISORY IS IN EFFECT UNTIL AT LEAST THURSDAY FOR CURRY COUNTY.
  • AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 PM WEDNESDAY FOR WILDFIRE SMOKE FOR CURRY COUNTY AND JOSEPHINE 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 that moved through the Pacific Northwest today and one way behind it. The graphics for days 3-7   Saturday through Wednesday show a frontal system pushing through Saturday and Sunday and the next one between Monday and Tuesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Some evening clouds, clear with patchy fog late tonight,
  • Patchy AM fog, mostly sunny and a bit warmer Thursday afternoon, mostly clear Thursday night,
  • Sunny and a bit warmer Friday, partly cloudy at night (Autumnal Equinox 11:50 pm),
  • Mostly cloudy with a slight (20%) chance of AM rain, a mix of clouds and sun and a bit cooler with a good (50%) of rain Saturday afternoon, cloudy with evening rain likely (70%), then a (30%) chance of rain Saturday night.
  • lows 44-53 highs 77-79 cooling to 72 Saturday.
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday, rain likely (70%) Sunday night,
  • Mostly cloudy with AM rain likely (70%), showers and a bit warmer with a slight (20%) chance of thunderstorms Monday afternoon, showers at night,
  • Mostly cloudy with showers and a slight (20%) chance of thunderstorms Tuesday afternoon and evening, showers Tuesday night,
  • Then mostly cloudy and a bit warmer with showers likely (70%) Wednesday.
  • highs 67-69 lows 55-49.  (seasonal averages high 77 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear tonight,
  • Sunny and a bit warmer Thursday clear Thursday night,
  • Sunny and a bit warmer Friday, partly cloudy in the evening, mostly cloudy at night (Autumnal Equinox 11:50 pm),
  • Mostly cloudy with a slight (20%) chance of AM showers, a slight (20%) chance of rain and a bit cooler Saturday afternoon, cloudy with a (40%) chance of rain Saturday night.
  • lows 47-55 highs 77-82 cooling to 74 Saturday.
  • Mostly cloudy and a bit cooler with a (40%) chance of rain Sunday, rain likely (70%) Sunday night,
  • Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain Monday, rain at night,
  • Mostly cloudy with AM rain, showers with a slight (20%) chance  of thunderstorms Tuesday afternoon, rain likely (70%) Tuesday night,
  • Then mostly cloudy and a bit warmer with rain likely (70%) Wednesday.
  • highs 69-72 lows 58-50. (seasonal averages high 79 low 51)

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

  • Mostly clear with patchy inland fog tonight,
  • Some AM clouds with patchy inland fog, sunny and a bit warmer Thursday afternoon, partly cloudy with patchy inland fog late Thursday night,
  • AM clouds, sunny and a bit warmer Friday afternoon, mostly cloudy with a slight (20%) chance of coastal showers late at night (Autumnal Equinox 11:50 pm),
  • Mostly cloudy with a slight (20%) chance of AM showers, a bit cooler with a good (50% ) chance of rain Saturday afternoon, then rain likely (70%) Saturday night.
  • lows 48-54 highs 70-73 cooling back to 70 Saturday.
  • Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) Sunday afternoon, rain likely (70%) Sunday night,
  • Mostly cloudy with AM rain likely (70%), showers with a slight (20%) chance of thunderstorms Monday afternoon, rain Monday night,
  • Mostly cloudy with AM rain, rain with a slight (20%) chance of thunderstorms Tuesday afternoon, rain likely (70%) Tuesday night,
  • Then mostly cloudy and a bit warmer with rain likely (70%) Wednesday.
  •  highs 70-72 lows 57-52. (seasonal averages high 67 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy tonight,
  • Mostly sunny start, a mix of clouds and sun and a bit warmer with a good (50%) chance of showers Thursday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Thursday night,
  • Mostly sunny and a bit warmer Friday, partly cloudy at night (Autumnal Equinox 11:50 pm),
  • A mix of clouds and sun with a slight (20%) chance of  rain and a bit cooler Saturday afternoon, then cloudy with a good (50%) chance of rain Saturday night.
  • snow level 7,500 ft. tonight, 6,500 ft. Thursday, 7,500 ft. Thursday night, free air freezing level 10,000 ft. rising to 11,000 ft. Friday afternoon, 11,000 ft. Friday night, snow level 7,500 ft. Saturday, then 8,000 ft. Saturday night.
  • lows 32-40 highs 54-63 cooling to 59 Saturday.
  • Cloudy and a bit cooler with a good (50%) chance of rain Sunday, a good (50%) chance of rain Sunday night,
  • Mostly cloudy with AM rain likely (70%), showers likely (70%) with a slight (20%) chance of thunderstorms and a bit warmer Monday afternoon, showers at night,
  • Mostly cloudy with AM showers likely (70%), showers likely (70%) and a bit cooler with a slight (20%) chance of thunderstorms Tuesday afternoon, showers likely (70%) Tuesday night,
  • Then mostly cloudy with a good (50%) chance of showers Wednesday.
  • snow level 8,000 ft. Sunday above 8,000 ft. Sunday night through Monday night, 7,500 ft. Tuesday,
  • highs 54-50 warming to 52 Tuesday lows 42-35.