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Tim Chuey Weather

by | Aug 18, 2023 | Weather

August 18, 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 UNTIL 9 PM TONIGHT FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE CENTRAL OREGON CASCADES AND THE CENTRAL MOUNTAINS OF OREGON.
  • A RED FLAG WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE NORTHERN OREGON CASCADES, AND THE LOWER COLUMBIA BASIN OF OREGON.
  • A RED FLAG WARNING IS IN EFFECT FROM 11 AM SATURDAY UNTIL 9 PM SUNDAY FOR SIGNIFICANTLY UNSTABLE CONDITIONS FOR THE MT. HOOD NATIONAL FOREST WEST OF CASCADES CREST AND THE WILLAMETTE NATIONAL FOREST.
  • AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON SUNDAY FOR WILDFIRE SMOKE FOR EASTERN LANE COUNTY, NOT INCLUDING THE EUGENE-SPRINGFIELD AREA.
  • AN AIR QUALITY ALERT IS IN EFFECT UNTIL NOON SUNDAY FOR WILDFIRE SMOKE FOR KLAMATH COUNTY AND LAKE COUNTY.
  • AN AIR QUALITY ALERT IS IN EFFECT UNTIL 11 PM TONIGHT FOR WILDFIRE SMOKE FOR CROOK COUNTY AND DESCHUTES COUNTY.
  • AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON SUNDAY FOR WILDFIRE SMOKE FOR THE CASCADE FOOTHILLS IN LANE COUNTY AND THE CASCADES IN LANE COUNTY.
  • AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON SUNDAY FOR WILDFIRE SMOKE FOR JACKSON COUNTY AND JOSEPHINE COUNTY.

HEALTH ADVISORIES

  • A RECREATIONAL USE HEALTH ADVISORY HAS BEEN ISSUED FOR CULLABY LAKE IN CLATSOP  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 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 IS IN EFFECT FOR ARRONS LAKE, 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 off the California coast will help to slowly cool our Hot temperatures. The graphics for days 1-3  show a cold front moving into the Pacific Northwest today. The graphics for days 3-7   Monday through Friday show a frontal system moving into the Pacific Northwest Monday and Tuesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Clear tonight,
  • Mostly sunny and a bit warmer Saturday, mostly clear and hazy Saturday night,
  • AM haze, mostly sunny Sunday afternoon, partly cloudy at night,
  • Partly cloudy and a bit cooler Monday, then partly cloudy Monday night.
  • lows 52-57 cooling to 55 Sunday night cooling to 53 Monday night highs 92-84.
  • Some AM clouds, sunny Tuesday afternoon, mostly clear Tuesday night.
  • Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear both nights,
  • Then mostly sunny and a bit cooler Friday.
  • highs 84-92 cooling to 88 Friday lows near 57.  (seasonal averages high 84 low 51)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear and hazy late tonight,
  • Sunny and hazy and a bit warmer Saturday, mostly clear and hazy Saturday night,
  • Sunny with AM haze, partly cloudy and a bit warmer Sunday afternoon, mostly cloudy in the evening, partly cloudy late at night,
  • Partly cloudy and a bit cooler Monday, then partly cloudy with a slight (20%) chance of evening showers, then just partly cloudy late Monday night.
  • lows 57-62 highs 89-94.
  • Some AM clouds, sunny Tuesday afternoon, mostly clear Tuesday night,
  • Mostly sunny and a bit warmer Wednesday, mostly clear at night,
  • Sunny and a bit warmer Thursday, mostly clear Thursday night,
  • Then mostly sunny and a bit cooler Friday.
  • highs 86-92 lows 62-58. (seasonal averages high 86 low 57)

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

  • Mostly clear tonight,
  • Some AM clouds, sunny and a bit warmer Saturday afternoon, mostly clear and hazy Saturday night,
  • AM haze, sunny and a bit warmer Sunday afternoon, partly cloudy in the evening, mostly cloudy late at night,
  • Partly cloudy and a bit cooler Monday, then partly cloudy Monday night.
  • lows 54-57 cooling to 55 Monday night highs 76-78 cooling to 75 Monday.
  • Mostly sunny and a bit warmer Tuesday and Wednesday, mostly clear both nights,
  • Mostly sunny Thursday, mostly clear in the evening, partly cloudy late Thursday night,
  • Then sunny and a bit cooler Friday.
  •  highs near 76-78 cooling back to 76 Friday lows 54-56. (seasonal averages high 67 low 54)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Evening haze, mostly clear late tonight,
  • Mostly sunny and hazy and a bit warmer Saturday, partly cloudy and hazy with areas of smoke late Saturday night,
  • Hazy with areas of AM smoke, partly cloudy and a bit cooler Sunday afternoon, partly cloudy at night,
  • A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Monday afternoon, partly cloudy with a slight (20%) chance evening showers, then just partly cloudy late Monday night.
  • free air freezing level 15,000 ft. falling to 14,000 ft. late tonight, 14,000 ft. Saturday through Sunday night, then snow level above 8,000 ft. Monday and Monday night.
  • lows 50-53 cooling to 48 Monday night highs 82-72.
  • Partly cloudy and a bit cooler with a slight (20%) chance of showers Tuesday afternoon, partly cloudy Tuesday night,
  • Mostly sunny and a bit warmer Wednesday and Thursday, mostly clear both nights
  • Then mostly sunny and a bit cooler Friday.
  • snow level above 8,000 ft. Tuesday, free air freezing level 12,000 ft. Tuesday night, 13,000 ft. Wednesday, then 14,000 ft. Wednesday night through Friday.
  • highs 77-77 cooling 73 Friday lows 44-48.