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January 20, 2024

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

  • AN ICE STORM WARNING IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE UPPER HOOD RIVER VALLEY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SUNDAY FOR NORTH CENTRAL OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SUNDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SUNDAY FOR THE LOWER COLUMBIA BASIN OF OREGON.
  • WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SUNDAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
  • WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SUNDAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
  • WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SUNDAY FOR THE NORTHERN OREGON CASCADES.
  • WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM SUNDAY FOR THE SOUTH CENTRAL OREGON CASCADES.
  • A FLOOD WARNING IS IN EFFECT THROUGH LATE THIS TONIGHT FOR THE COQUILLE RIVER AT COQUILLE AFFECTING COOS COUNTY.
  • A FLOOD WATCH IS IN EFFECT THROUGH MONDAY MORNING FOR THE CURRY COUNTY COAST.

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

An Upper Level Low Pressure Trough (“U” shape) is hanging out along the Pacific Coasts of Washington, Oregon, and California. The graphics for days 1-3  show the front  becoming stationary to our south and another storm moving Northeastward from the northern California coast.. The graphics for days 3-7   Tuesday through Saturday show a the parade of frontal systems approaching the Pacific Northwest.

Note: Due to the heavy snowfall in the area Willamette Pass, Hoodoo, and Mt Ashland are all open for skiing. Check their web pages for details.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with rain tonight (o.50 in. of rain possible) ,
  • Mostly cloudy and warmer with rain Sunday (o.25 in. of rain possible), rain Sunday night (0.25 in. of rain possible),
  • Mostly cloudy with rain Monday (0.10 in. of rain possible), rain at night (0.10 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain Tuesday afternoon, then rain Tuesday night.
  • lows 42-46 cooling to 44 Tuesday night highs near 54.
  • Mostly cloudy with rain and a bit cooler Wednesday with a slight (20%) chance of afternoon thunderstorms, evening showers with a slight (20%) chance of thunderstorms, rain likely (70%) late Wednesday night,
  • Mostly cloudy with rain likely (70%) Thursday, rain likely (70%) at night,
  • Mostly cloudy with rain likely (70%) Friday, a good (50%) chance of evening rain, rain likely (70%) late Friday night,
  • Then mostly cloudy and a bit warmer with rain likely (70%) Saturday.
  • highs 52-55 lows 44-42 warming back to 44 Friday night. (seasonal averages high 49 low 35)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with rain tonight (0.25 in. of rain possible),
  • Mostly cloudy with AM rain, rain likely (70%) and a bit warmer Sunday (under 0.10 in. of rain possible), rain Sunday night (0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with rain Monday (0.10 in. of rain possible), rain at night (0.10 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%), a bit warmer with a slight (20%) chance of showers Tuesday, then rain Tuesday night.
  • lows near 46 highs 57-54 warming back to 57.
  • Mostly cloudy rain and a bit cooler Wednesday, rain likely (70%) Wednesday night,
  • Mostly cloudy with rain likely (70%) and a bit cooler Thursday, rain likely (70%) at night,
  • Mostly cloudy with rain likely (70%) Friday, a good (50%) chance of rain Friday night,
  • Then mostly cloudy and a bit warmer with rain likely (70%) Saturday.
  • highs 55-58 lows 44-48. (seasonal averages high 51  low 37).

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

  • Mostly cloudy with rain tonight (0.75 in. of rain possible),
  • Mostly cloudy and a bit warmer with rain Sunday (0.25 in. of rain possible), rain Sunday night (0.25 in. of rain possible),
  • Mostly cloudy with rain and a bit cooler Monday (0.10 in. of rain possible), rain at night (0.10 in. of rain possible),
  • Mostly cloudy with rain AM rain likely (70%), a slight (20%) chance of showers Tuesday afternoon, then rain Tuesday night.
  • lows near 48 highs near 57.
  • Mostly cloudy with rain Wednesday, rain likely (70%) Wednesday night,
  • Mostly cloudy and a bit warmer with rain likely (70%) Thursday, rain likely (70%) at night,
  • Mostly cloudy and a bit warmer with rain likely (70%) Friday, rain likely (70%) at night,
  • Then mostly cloudy and a bit warmer with rain likely (70%) Saturday.
  • highs 57-62 lows 48-50. (seasonal averages high 54 low 41)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with rain tonight (0.50 in. of rain possible, 1 in. of snow possible),
  • Mostly cloudy and a bit warmer with rain Sunday (0.50 in. of rain possible), rain Sunday night (0.25 in. of rain possible),
  • Mostly cloudy with rain and a bit cooler Monday, rain at night,
  • Mostly cloudy with AM rain and snow, a good (50%) of rain and a bit warmer Tuesday afternoon, rain with a good (50%) chance of evening rain and snow, then snow late Tuesday night.
  • snow level 5,500 ft. tonight, 6,000 ft. Sunday  through Monday, 5,500 ft. Monday night through Tuesday night.
  • lows 32-30 highs 38-36 warming back to 38 Tuesday.
  • Mostly cloudy and a bit cooler with rain Wednesday, rain and snow Wednesday night,
  • Mostly cloudy with rain and snow likely (70%) Thursday, evening rain and snow likely (70%), rain likely (70%) late at night,
  • Mostly cloudy with AM rain and snow likely (70%), rain likely (70%) and a bit warmer Friday afternoon, a good (50%) chance of evening rain, rain likely (70%) late Friday night,
  • Then rain likely (70%) and a bit warmer Saturday.
  • snow level 5,500 ft. Wednesday, 5,000 ft. Wednesday night and Thursday, 6,500 ft. Thursday night, 7,500 ft. Friday, then 8,000 ft. Friday night and Saturday.
  • highs 37-42 lows 30-34.