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Tim Chuey Weather

by | Dec 4, 2023 | Weather

December 5, 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 FLOOD WARNING IS IN EFFECT FROM UNTIL THIS MORNING FOR THE COQUILLE RIVER AT COQUILLE AFFECTING COOS  COUNTY.
  • A FLOOD ADVISORY IS IN EFFECT UNTIL 1 AM THURSDAY FOR BENTON COUNTY, CLACKAMAS COUNTY, CLATSOP COUNTY, COLUMBIA COUNTY, LANE COUNTY, LINCOLN COUNTY, LINN COUNTY,  MARION COUNTY, MULTNOMAH COUNTY, POLK COUNTY, TILLAMOOK COUNTY, WASHINGTON COUNTY, AND YAMHILL COUNTY.
  • A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH LATE WEDNESDAY NIGHT FOR THE NORTH CENTRAL OREGON COAST AND THE CENTRAL OREGON COAST.
  • A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH WEDNESDAY MORNING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
  • A FLOOD WATCH IS IN EFFECT THROUGH WEDNESDAY AFTERNOON FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST, THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF NORTHWEST OREGON, THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE NORTHERN OREGON CASCADE FOOTHILLS, AND THE CASCADE FOOTHILLS IN LANE COUNTY.
  • A FLOOD WATCH IS IN EFFECT THROUGH WEDNESDAY AFTERNOON THE SOUTH CENTRAL OREGON COAST, THE CURRY COUNTY COAST, CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY, AND JOSEPHINE COUNTY.
  • A WIND ADVISORY IS IN EFFECT FROM 1AM UNTIL 7 PM TODAY FOR FOR THE GRANDE RONDE VALLEY.

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 cold front pushing through the Pacific Northwest then slowly moving backward to the northwest and becoming stationary. Another complex frontal system will approach the coast then move in today. The graphics for days 3-7  Friday through Tuesday show a very active weather pattern through Thursday night, a short break Friday, then more fronts Sunday through Tuesday.

________________

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with rain and a bit cooler today (1.00 in. of rain possible), rain tonight (1.00 in. of rain possible),
  • Mostly cloudy and a bit cooler with rain Wednesday and in the evening, rain with a slight (20%) chance of thunderstorms late at night (0.50 in. of rain possible),
  • Mostly cloudy and a bit cooler with rain and a slight (20%) chance of thunderstorms Thursday, evening rain with a slight (20%) chance of thunderstorms, then showers late Thursday night.
  • highs 62-49 lows 52-38.
  • Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain and a bit cooler Friday afternoon and  Friday night,
  • Mostly cloudy and a bit warmer with rain Saturday, rain at night,
  • Mostly cloudy with rain likely (70%) and a bit warmer Sunday, a good (50%) chance of showers Sunday night,
  • Then mostly cloudy and a bit cooler with a good (50%) chance of rain Monday.
  • highs 48-53 cooling to 50 Monday lows 37-43. (seasonal averages high 48 low 35)

Forecast for the Umpqua Valley including Roseburg:

  • Cloudy with a good (50%) chance of AM rain, rain and cooler today (under 0.10 in. of rain possible), rain tonight (0.10 in. of rain possible),
  • Mostly cloudy with AM rain, a bit cooler with showers and a slight (20%) chance of thunderstorms Wednesday afternoon (0.50 in. of ran possible, possible heavy rain in storms), showers and a slight (20%) chance of thunderstorms at night (0.25 in. of rain possible),
  • highs 63-47 lows 53-39.
  • Mostly cloudy with rain and a bit cooler with showers and a slight (20%) chance of thunderstorms Thursday, then rain and snow Thursday night,
  • Mostly cloudy with a good (50%) of AM rain and snow, rain and a bit cooler Friday afternoon, a (40%) chance of rain and snow at night,
  • Mostly cloudy and a bit warmer with rain Saturday, rain Saturday night,
  • Mostly cloudy and a bit warmer with rain likely (70%) Sunday, a (40%) chance of rain Sunday night,
  • Then mostly cloudy and a bit cooler with a (40%) chance of rain Monday.
  • highs 46-52 cooling to 5o Monday lows 39-43. (seasonal averages high 49 low 38)

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

  • Mostly cloudy with AM coastal rain likely (70%) while a good (50%) chance of inland AM rain, rain this afternoon (0.25 in. of rain possible), rain tonight (1.50 in. of rain possible),
  • Mostly cloudy with AM rain, showers and a slight (20%) chance of thunderstorms a bit cooler Wednesday afternoon (0.50 in. of rain possible), showers with a slight (20%) chance of thunderstorms late at night (0.50 in. of rain possible),
  • Mostly cloudy with showers and a bit cooler with a slight (20%) chance of thunderstorms Thursday, then rain Thursday night.
  • highs 66-55 lows 50-40.
  • Mostly cloudy with a good (50%) chance of rain and a bit cooler Friday afternoon, a good (50%) chance of rain Friday night,
  • Mostly cloudy with rain and a bit warmer Saturday, rain at night,
  • Mostly cloudy with rain likely (70%) Sunday, a good (50%) chance of rain Sunday night,
  • Then mostly cloudy with a good (50%) chance of rain Monday.
  • highs 55-60 cooling to 58 Monday lows 40-46 cooling to 44 Sunday night. (seasonal averages high 53 low 41)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with AM rain likely (70%), a good (50%) of rain and a bit cooler today, rain tonight (0.25 in. of rain possible),
  • Mostly cloudy with AM rain, rain and snow and a bit cooler Wednesday afternoon, rain and snow at night,
  • Mostly cloudy with AM rain and snow, a bit cooler with snow and a slight (20%) chance of thunderstorms Thursday afternoon (snow possibly heavy at times), evening snow and rain with a slight (20%) chance of thunderstorms (snow possibly heavy at times), then snow with a slight (20%) of rain late Thursday night.
  • snow level above 8,000 ft. falling to 8,000 ft. this afternoon, 7,000 ft. tonight, 6,000 ft. falling to 5,000 ft. Wednesday afternoon, 4,000 ft. Wednesday night, 3,500 ft. Thursday, then 3,000 ft. Thursday night.
  • highs near 48-32 lows 36-23.
  • Mostly cloudy with AM snow likely (70%) and a slight (20%) chance of rain, a bit cooler with a good (50%) chance of snow and rain Friday afternoon, a good (50%) chance of snow and rain Friday night,
  • Mostly cloudy with rain and snow and a bit warmer Saturday, rain with a slight (20%) chance of snow at night,
  • Mostly cloudy and a bit warmer with rain and snow likely (70%) Sunday, a good (50%) chance of rain and snow Sunday night,
  • Then a mix of clouds and sun and a bit warmer with a good (50%) chance of rain and snow.
  • snow level  2,500 ft. Friday and Friday night, 4,500 ft. Saturday, 6,000 ft. Saturday night, 5,500 ft. Sunday, then 5,000 ft. Sunday night and Monday.
  • highs 29-37 lows 22-32 cooling to 28 Monday.