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January 18, 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

  • A WINTER STORM WARNING IS IN EFFECT FROM 4 AM TODAY UNTIL 4 AM FRIDAY FOR THE UPPER HOOD RIVER VALLEY.,
  • A WINTER STORM WARNING IS IN EFFECT FROM 10 AM TODAY UNTIL 4 AM FRIDAY FOR NORTH CENTRAL OREGON.
  • A WINTER STORM WARNING IS IN EFFECT FROM 4 AM TODAY UNTIL 10 AM FRIDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 AM MST TODAY FOR THE OREGON LOWER TREASURE VALLEY.
  • A FLOOD WARNING IS IN EFFECT THROUGH LATE SATURDAY MORNING FOR THE COQUILLE RIVER AT COQUILLE AFFECTING COOS 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

An Upper Level High Pressure Ridge (“Arch” shape) has moved closer to us which means the freezing precipitation will be gone. Melting the ice may take a while. The graphics for days 1-3  show the front currently sagging into Oregon and becoming stationary to our south. The graphics for days 3-7   Sunday through Thursday 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, if you can get there through the snow. Check their web pages for details.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy and a bit warmer with rain today (0.50 in. of rain possible), cloudy with a good (50%) chance of rain tonight (0.25 in. of rain possible),
  • Cloudy with a good (50%) chance of rain and a bit cooler Friday (under o.10 in. of rain possible), rain likely (70%) at night (under o.10 in. of rain possible),
  • Mostly cloudy and a bit warmer with rain Saturday, then rain Saturday night.
  • highs 50-44 warming to 48 Saturday lows 38-46.
  • Mostly cloudy and a bit warmer with rain Sunday, rain Sunday night,
  • Mostly cloudy with rain Monday, rain at night,
  • Mostly cloudy and a bit warmer with rain Tuesday, rain Tuesday night,
  • Then mostly cloudy with rain Wednesday.
  • highs 52-54 lows 44-47. (seasonal averages high 48 low 35)

Forecast for the Umpqua Valley including Roseburg:

  • Cloudy with a (30%) chance of rain today (under 0.10 in. of rain possible), a slight (20%) chance of rain tonight,
  • Mostly cloudy with a (30%) chance of rain and a bit warmer Friday afternoon, rain likely (70%) at night (under 0.10 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%), rain and a bit cooler Saturday afternoon, then rain Saturday night.
  • highs 55-58 cooling back to 55 Saturday lows near 45.
  • Mostly cloudy with rain Sunday, rain Sunday night,
  • Mostly cloudy and a bit warmer with rain Monday, rain at night,
  • Mostly cloudy with rain Tuesday and Tuesday night,
  • Then rain and a bit warmer Wednesday.
  • highs 55-57 lows 47-49. (seasonal averages high 50  low 37).

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

  • Mostly cloudy with a (30%)  chance of rain and a bit warmer today (under 0.10 in. of rain possible), mostly cloudy with a (30%) chance of rain tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with a good (50%) chance of AM rain, rain and a bit warmer Friday afternoon (under 0.10 in. of rain possible), rain at night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with rain and breezy Saturday, then rain and breezy Saturday night.
  • highs 59-62 cooling to 57  Saturday lows near 48.
  • Mostly cloudy and a bit warmer with rain Sunday, rain Sunday night,
  • Mostly cloudy with rain Monday, rain at night,
  • Then mostly cloudy with rain Tuesday through Wednesday.
  • highs near 58 lows near 48. (seasonal averages high 54 low 41)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with rain and a bit warmer today (0.50 in. of rain possible), a good (50%) chance of rain tonight,
  • Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) and a bit warmer Friday afternoon, rain likely (70%) at night,
  • Mostly cloudy with rain and a bit cooler Saturday, then rain Saturday night.
  • snow level 6,500 ft. today, 7,500 ft. tonight, 6,500 ft. Friday, 6,000 ft. Friday night, then 5,500 ft. Saturday and Saturday night.
  • highs 38-40 cooling to 37 Saturday lows 35-32.
  • Mostly cloudy with rain and a bit cooler  Sunday, rain Sunday night,
  • Mostly cloudy and a bit warmer with rain Monday, rain at night,
  • Mostly cloudy with AM snow, rain Tuesday afternoon and Tuesday night,
  • Then mostly cloudy with snow and rain Wednesday.
  • snow level  6,000 ft. Sunday through Monday night, 5,500 ft. Tuesday, then 6,000 ft. Tuesday night and Wednesday.
  • highs 37-39 lows near 33.