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Tim Chuey Weather

by | Dec 9, 2023 | Weather

December 9, 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 WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM SUNDAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM SUNDAY FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT FROM 7 PM MST THIS EVENING UNTIL 11 AM MST SUNDAY FOR BAKER 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

Frontal systems are moving through Oregon bringing rain and they will be pushed by Atmospheric Rivers. The graphics for days 1-3  show a complex frontal system slowly pushing through the Pacific Northwest between today and Sunday. The graphics for days 3-7  Tuesday through Saturday show frontal systems sliding through Oregon next Thursday and Saturday.

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Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with rain tonight (1.00 in. of rain possible),
  • Mostly cloudy with rain and a bit warmer Sunday (1.00 in. of rain possible), rain Sunday night (0.25 in. of rain possible),
  • Mostly cloudy with a good (50%) of AM showers, a slight (20%) chance of showers Monday afternoon (under 0.10 in. of rain possible), just mostly cloudy at night,
  • A mix of clouds and sun and a bit cooler Tuesday, partly cloudy in the evening, then mostly cloudy late Tuesday night.
  • lows 46-36 highs 53-48.
  • Mostly cloudy with a slight (20%) chance of AM rain, a bit warmer with a good (50%) chance of rain Wednesday afternoon, mostly cloudy with a good (50%) chance of rain Wednesday night,
  • Clouds and sun with a slight (20%) chance of AM rain, a mix of clouds and sun and a bit warmer Thursday afternoon, partly cloudy in the evening, mostly cloudy at night,
  • Partly cloudy and a bit cooler Friday, partly cloudy in the evening, mostly cloudy late Friday night,
  • Then a mix of clouds and sun and a bit warmer with a (30%) chance of showers Saturday.
  • highs 50-52 cooling back to 50 Saturday lows 38-34. (seasonal averages high 47 low 34)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a (40%) of evening rain, rain late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with rain and a bit warmer Sunday and in the evening (0.25 in. of rain possible), rain likely (70%) late Sunday night (under 0.10 in. of rain possible),
  • Mostly cloudy with a good (50%) chance of rain Monday, a slight (20) chance of evening rain, mostly cloudy with patchy fog late at night,
  • Mostly cloudy with AM fog, sunny Tuesday afternoon, partly cloudy in the evening, then mostly cloudy late Tuesday night.
  • lows 44-47 cooling to 38 Tuesday night highs near 52.
  • Mostly cloudy with patchy AM and late night fog, mostly cloudy with a slight (20%) chance of rain Wednesday afternoon and Wednesday night,
  • Mostly cloudy with patchy AM fog and a slight (20%) chance of rain, just partly cloudy Thursday afternoon, mostly cloudy Thursday night,
  • Patchy AM fog, mostly cloudy Friday afternoon, mostly cloudy with patchy fog with with a slight (20%) chance of rain Friday night,
  • Patchy AM fog, then mostly cloudy and a bit warmer with a slight (20%) chance of rain Friday.
  • highs 52-54 lows 40-38 warming back to 40 Thursday night. (seasonal averages high 48 low 37)

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

  • Cloudy with a good (50%) of early evening coastal rain with coastal rain tonight (0.10 in. of rain possible),
  • Mostly cloudy with rain and a bit warmer Sunday and in the evening (1.00 in. of rain possible), coastal rain likely (70%) late Sunday night while a good (50%) chance of (inland rain late Sunday night (0.25 in. of rain possible),
  • Mostly cloudy with a (40%) chance of rain Monday afternoon (under 0.10 in. of rain possible), a slight (20%) chance of evening rain, just mostly cloudy late at night,
  • Partly cloudy and a bit warmer Tuesday and in the evening, then mostly cloudy Tuesday night.
  • lows 48-40 highs 58-60.
  • Mostly cloudy and a bit cooler with a (30%) chance of rain Wednesday afternoon, a good (50%) chance of rain Wednesday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit warmer with a slight (20%) chance of rain Thursday afternoon, just mostly cloudy at night,
  • Mostly cloudy and a bit warmer Friday, a slight (20%) chance of rain Friday night,
  • Then mostly cloudy with a (30%) chance of rain Saturday.
  • highs 59-62 lows near 42. (seasonal averages high 53 low 40)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Cloudy with rain and snow tonight (1.00 in. of rain possible, no snow accumulation expected),
  • Mostly cloudy with rain and a bit warmer Sunday (1.50 in. of rain possible), rain Sunday night (0.50 in. of rain possible),
  • Mostly cloudy with AM showers likely (70%), a slight (20%) chance of showers Monday afternoon, just partly cloudy late at night,
  • Some AM clouds, sunny Tuesday, then partly cloudy Tuesday night.
  • snow level 6,500 ft. rising to ft. 7,500 ft. tonight, 7,000 ft. Sunday, 6,500 ft. Sunday night, 5,500 ft. Monday, 5,000 ft. Monday night, free air freezing level 9,000 ft. Tuesday, then 10.000 ft. Tuesday night.
  • lows 33-35 cooling to 25 Tuesday night, highs near 39.
  • Clouds and sun with a slight (20%) chance of AM rain, a bit warmer with a (40%) chance of rain Wednesday afternoon, a (40%) chance of evening rain and snow showers, a slight (20%) snow late at night,
  • Clouds and sun with a slight (20%) chance of AM snow, a mix of clouds and sun and a bit warmer with a slight (20%) chance of rain Thursday afternoon, partly cloudy with a slight (20%) chance of evening rain and snow showers, just partly cloudy late Thursday night,
  • Clouds and sun and a bit cooler with a slight (20%) chance of snow showers and a (30%) chance of rain showers Friday afternoon, partly cloudy with a slight (20%) chance of rain and snow showers Friday night,
  • Then partly cloudy and a bit warmer with a (30%) chance of rain and snow showers Saturday.
  •  snow level 5,500 ft. Wednesday through Saturday.
  • highs 40-42 cooling to 39 Friday warming to 42 Saturday lows 28-25 warming back to 28 Friday night.