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Tim Chuey Weather

by | Nov 20, 2023 | Weather

November 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 DENSE FOG ADVISORY IS IN EFFECT UNTIL 10 AM TUESDAY BELOW 1,000 FT. FOR THE SOUTH WILLAMETTE VALLEY.
  • A DENSE FOG ADVISORY IS IN EFFECT UNTIL 10 AM TUESDAY BELOW 1,000 FT. FOR THE CENTRAL WILLAMETTE VALLEY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 PM TUESDAY BELOW 1,000 FT. FOR THE CENTRAL COAST RANGE OF WESTERN OREGON, AND THE SOUTH WILLAMETTE VALLEY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 PM TUESDAY BELOW 1,500 FT. FOR THE CASCADE FOOTHILLS IN LANE COUNTY AND THE CASCADES IN LANE COUNTY.
  • AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL 10 PM TUESDAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, JACKSON COUNTY, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.

HEALTH ADVISORIES

  • A PUBLIC HEALTH ADVISORY IS IN EFFECT FOR UNSAFE LEVELS OF FECAL BACTERIA IN OCEAN WATERS AT BEVERLY BEACH IN LINCOLN COUNTY. PEOPLE SHOULD AVOID DIRECT CONTACT WITH THE WATER IN THIS AREA UNTIL THE ADVISORY IS LIFTED. UNSAFE LEVELS OF FECAL BACTERIA CAN CAUSE DIARRHEA, STOMACH CRAMPS, SKIN RASHES, UPPER RESPIRATORY INFECTIONS AND OTHER ILLNESSES. CHILDREN, THE ELDERLY, AND THOSE WITH A COMPROMISED IMMUNE SYSTEM SHOULD USE EXTRA CAUTION AS THEY ARE MORE VULNERABLE TO TO ILLNESSES FROM WATERBORNE BACTERIA. VISITORS SHOULD AVOID WADING IN NEARBY CREEKS, POLS OF WATER ON THE BEACH, OR IN DISCOLORED WATER, AND STAY CLEAR OF WATER RUNOFF FLOWING INTO THE OCEAN.
  • 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 CONTINUES 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

  • A cold front is changing our weather for the colder. The graphics for days 1-3  show the frontal system pushing through Pacific Northwest Tuesday and Tuesday night. The graphics for days 3-7   Thursday through Monday show a cold front to our north that slides in through the back door (moving NE to SW) next Saturday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with patchy fog late tonight,
  • Patchy AM fog, mostly cloudy, possible sun breaks, and a bit warmer Tuesday afternoon, mostly cloudy with a good (50%) chance of evening rain, rain likely (70%) late Tuesday night,
  • Cloudy with rain likely (70%) and patchy AM fog, a bit warmer with a good (50%) chance of rain Wednesday afternoon (0.10n in. of rain possible), a (40%) chance of evening rain, mostly cloudy with patchy fog late at night,
  • Patchy AM fog, partly cloudy and a bit cooler Thursday (Thanksgiving Day), then partly cloudy Thursday night.
  • lows 35-39 cooling to 33 Thursday night highs 49-53 cooling to 50 Thursday.
  • Mostly sunny Friday, mostly clear Friday night,
  • Mostly sunny and a bit cooler Saturday, mostly clear at night,
  • Mostly sunny Sunday, partly cloudy with patchy fog Sunday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, then a (40%) chance of rain and a bit warmer Monday afternoon.
  • highs 50-48 warming back to 50 Monday lows 29-32. (seasonal averages high 51 low 37)

Forecast for the Umpqua Valley including Roseburg:

  • Becoming mostly cloudy late tonight,
  • AM clouds, sunny and a bit warmer Tuesday afternoon, partly cloudy with a (30%) chance of evening rain, mostly cloudy with a (30%) chance of rain late Tuesday night,
  • Mostly cloudy and cooler with a (40%) chance of rain Wednesday (under 0.10 in. of rain possible), areas of fog and a (40%) chance of showers at night,
  • Patchy AM fog, partly cloudy and a bit cooler Thursday afternoon (Thanksgiving Day), then just partly cloudy and colder Thursday night.
  • lows 43-45 cooling to 36 Thursday night highs 62-52.
  • Patchy AM fog, sunny and a bit cooler Friday afternoon, mostly clear Friday night,
  • Mostly sunny Saturday, mostly clear at night,
  • Mostly sunny and a bit warmer Sunday, mostly clear in the evening, mostly cloudy late Sunday night,
  • Then mostly cloudy with a slight (20%) chance of rain Monday.
  • highs 50-52 lows 32-34. (seasonal averages high 52 low 40)

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

  • Becoming mostly cloudy late tonight,
  • Mostly cloudy start, partly cloudy slightly cooler Tuesday afternoon, mostly cloudy with a (40%) chance of coastal rain at night while a (30%) chance of inland rain Tuesday night (under 0.10 in. of rain possible),
  • Cloudy with AM rain likely (70%) and a good (50%) chance of of coastal rain and a bit cooler Wednesday afternoon while inland rain likely (70%) Wednesday afternoon (under 0.10 in. of rain possible), a good (50%) chance of evening rain, then partly cloudy with a areas of fog and a slight (20%) chance of showers late at night (under 0.10 in. of rain possible),
  • Patchy AM fog, sunny Thursday afternoon (Thanksgiving Day), then mostly clear Thursday night.
  • lows 456-39 highs 63-59.
  • Sunny Friday, mostly clear Friday night,
  • Mostly sunny Saturday, mostly clear at night,
  • Mostly sunny and a bit warmer Sunday, partly cloudy in the evening, mostly cloudy late Sunday night,
  • Then mostly cloudy and a bit cooler with a (30%) chance  of rain Monday.
  • highs 59-62 cooling to 50 Monday lows 37-39. (seasonal averages high 56 low 43)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy this evening, mostly cloudy late tonight,
  • Partly cloudy and a bit warmer Tuesday, a slight (20%) chance of evening rain, partly cloudy with sa good (50%) chance of rain late Tuesday night,
  • Mostly cloudy with rain likely (70%) and cooler Wednesday and in the evening snow, a good (50%) chance rain and snow late at night patchy dense fog late,
  • Partly cloudy with a slight (20%) chance of AM rain and a (40%) chance of snow, mostly sunny with a slight (20%) chance of rain and a bit cooler Thursday afternoon (Thanksgiving Day), mostly clear a slight (20%) chance of evening rain and snow, then just mostly clear Thursday night.
  • free air freezing level 13,000 ft. tonight and Tuesday, 6,000 ft. Tuesday night, 6,500 ft. Wednesday, 6,000 ft. falling to 5,000 ft. late Wednesday night, 4,000 ft. Thursday, then 3,000 ft. Thursday night.
  • lows 33-22 highs 54-39.
  • Mostly sunny and a bit cooler Friday, mostly clear Friday night,
  • Mostly sunny and a bit warmer Saturday, mostly clear at night,
  • Mostly sunny and a bit warmer Sunday, partly cloudy Sunday night,
  • Clouds and sun with a slight (20%) chance of AM snow and rain, then a (40%) chance of rain Monday afternoon
  • free air freezing level 5,500 ft. Friday, 5,000 ft. Friday night, 6,000 ft. Saturday, 6,500 ft. Saturday night and Sunday, 7,000 ft. Sunday night, then snow level 4,000 ft. Monday.
  •  highs 36-45 lows 22-27.