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January 10, 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 UNTIL 4 PM TODAY ABOVE 1,500 FT. FOR THE NORTHERN OREGON CASCADES.
  • A BLIZZARD WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 3,000 FT. FOR THE NORTH OREGON CASCADES.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY  ABOVE 2,000 FT FOR THE CASCADES IN LANE COUNTY.
  • A BLIZZARD WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 3,500 FT. FOR THE CASCADES IN LANE COUNTY.
  • A BLIZZARD WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE EAST SLOPES OF THE OREGON CASCADES.
  • A WINTER STORM WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING FOR THE EAST SLOPES OF THE OREGON CASCADES.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 1,500 FT. FOR THE NORTHERN OREGON CASCADE FOOTHILLS AND THE UPPER HOOD RIVER VALLEY.
  • A BLIZZARD WARNING IS IN EFFECT UNTIL 10 AM TODAY FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 2,000 FT. FOR THE CASCADE FOOTHILLS IN LANE COUNTY.
  • A WINTER STORM WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 AM TODAY ABOVE 1,500 FT. FOR THE UPPER HOOD RIVER VALLEY.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 2,000 FT.  FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY AND JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 10 AM TODAY FOR CENTRAL OREGON.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL4 PM TODAY FOR THE GRANDE RONDE VALLEY AND THE JOHN DAY BASIN.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY AND JOSEPHINE COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND JACKSON COUNTY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 9 AM TODAY FOR CENTRAL DOUGLAS COUNTY, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM WEDNESDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES,
  • A WINTER STORM WARNING IS IN EFFECT  UNTIL 4 PM WEDNESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY ABOVE 2,000 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL NOON TODAY BELOW 2,000 FT. FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE OCHOCO, AND THE JOHN DAY HIGHLANDS.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 10 AM TODAY FOR THE WESTERN COLUMBIA RIVER GORGE AND THE CENTRAL COLUMBIA RIVER GORGE.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 6 AM TODAY ABOVE 500 FT. FOR THE GREATER PORTLAND METRO AREA.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 6 AM TODAY FOR THE LOWER COLUMBIA.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR WALLOWA COUNTY.
  • A WINTER STORM WATCH IS IN EFFECT FROM THURSDAY MORNING THROUGH SUNDAY MORNING FOR WALLOWA COUNTY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR BAKER COUNTY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE GRANDE RONDE VALLEY, THE JOHN DAY BASIN, THE FOOTHILLS OF THE OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND CENTRAL OREGON.
  • A WINTER STORM WARNING IS IN EFFECT UNTIL 5 PM MST TODAY FOR HARNEY AND MALHEUR COUNTIES.
  • A HIGH WIND WARNING IS IN EFFECT UNTIL 1 PM TODAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 PM TODAY FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 AM MST TODAY FOR BAKER COUNTY.
  • A WIND ADVISORY IS IN EFFECT UNTIL 1 PM TODAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, THE GRANDE RONDE VALLEY, THE JOHN DAY BASIN, NORTH CENTRAL OREGON, AND CENTRAL OREGON.
  • A HIGH SURF WARNING IS IN EFFECT UNTIL 10 AM TODAY FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.
  • A HIGH SURF WARNING IS IN EFFECT UNTIL 10 PM TODAY FOR THE SOUTH CENTRAL OREGON COAST AND THE AND 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 High Pressure Ridge (“Arch” shape) has moved along the coast sending northerly airflow into the Pacific Northwest.  The graphics for days 1-3  show the cold front moving through the Pacific Northwest. The graphics for days 3-7  Saturday through Wednesday show a frontal system moving through Saturday and next Sunday as a backdoor cold front moves in from the north bringing colder air.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with showers and a slight (20%) of thunderstorms and cooler this afternoon and evening (AM small hail possible), showers tonight (0.25 in. of rain possible, more in storms),
  • Mostly cloudy and a bit warmer with rain Thursday (0.10 in. of rain possible), rain with a slight (20%) chance of snow Thursday night (0.10 in. of rain possible, snow level 1,500 ft.),
  • Mostly cloudy with AM rain and a slight (20%) chance of AM snow, a bit warmer with snow Friday afternoon (snow level 1,000 ft.), evening rain with a slight (20%) chance of snow, then snow late Friday night.
  • highs 43-47 lows 36-39.
  • Mostly cloudy and a bit cooler with rain and snow Saturday, rain and snow likely (70%) Saturday night,
  • Mostly cloudy with a good (50%) chance of AM rain and snow, a slight (20%) chance of rain and snow and a bit cooler Sunday afternoon, mostly cloudy with a slight (20%) chance of rain and snow at night,
  • Mostly cloudy and a bit cooler with a slight (20%) chance of rain and snow Monday (Martin Luther King, Jr. Day), a (40%) chance of rain and snow Monday night,
  • Then mostly cloudy and a bit warmer with a good (50%) chance of rain and snow Tuesday.
  • highs 46-39 warming to 44 Tuesday lows 33-27. (seasonal averages high 48 low 35)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with rain showers and snow showers and a slight (20%) chance of thunderstorms and cooler this afternoon (0.50 in. of rain possible, 2-4 in. of snow possible, snow level 1,000 ft. rising to 2,000 ft. this afternoon), rain showers and snow snow showers tonight (0.10 in. of rain possible, 1-2 in. of snow possible, snow level 1,000 ft. rising to 1,500 ft.),
  • Mostly cloudy with rain and snow and a bit warmer Thursday (under 0.10 in. of rain possible), rain and snow at night (under 0.10 in. of rain possible),
  • Mostly cloudy with AM rain and snow (snow possibly heavy at times), rain and a bit warmer Friday afternoon, then rain Friday night.
  • highs 42-47 lows 34-42.
  • Mostly cloudy and a bit warmer with rain Saturday, evening rain likely (70%),  a good (50%) chance of rain late Saturday night,
  • Mostly cloudy with a good (50%) chance of AM rain and snow, rain and a bit cooler Sunday afternoon, a slight (20%) chance of rain and snow at night,
  • Mostly cloudy and a bit warmer with a slight (20%) chance of rain and snow Monday (Martin Luther King, Jr. Day), a (30%) chance of evening rain, a (30%) chance of rain and snow late Monday night,
  • Then mostly cloudy and a bit warmer with a (40%) chance of rain Tuesday.
  • highs 48-46 warming to 50 Tuesday lows 38-34 warming to 36 Monday night. (seasonal averages high 50  low 37).

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

  • Mostly cloudy and cooler with coastal showers and a slight (20%) chance of thunderstorms while inland snow showers and a slight (20%) chance of thunderstorms and a bit cooler this afternoon (0.25 in. of rain possible, 1 in. of snow possible, snow level 1,000 ft. rising to 2,000 ft. this afternoon), coastal showers and a (30%) chance of thunderstorms tonight while inland snow showers and a (20%) chance of thunderstorms (0.10 in of rain possible, snow level 2,000 ft. late tonight),
  • Mostly cloudy with coastal rain and a bit warmer Thursday while inland AM rain and snow with inland rain and a bit warmer Thursday afternoon (0.10 in. of rain possible), rain at night  (under 0.10 in. of rain possible),
  • Mostly cloudy with rain and a bit warmer Friday, then rain Friday night.
  • highs 46-54 lows 37-44.
  • Mostly cloudy with rain and breezy and a bit warmer Saturday, rain likely (70%) Saturday night,
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday, a (300%) chance of rain at night,
  • Mostly cloudy with a slight (20%) chance of rain Monday (Martin Luther King, Jr. Day), a (30%) chance of rain Monday night,
  • Then mostly cloudy and a bit warmer with a good (50%) chance of rain Tuesday.
  • highs 55-53warming to 56 Tuesday lows 39-35 warming to 38 Monday night. (seasonal averages high 53 low 41)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with AM snow showers and patchy blowing snow, a bit cooler with snow showers today (5-8 in. of snow possible), Brisk wind (Pass Wind: W 15-25 mph), snow showers tonight (0.50 in. of rain possible, 3-7 in. of snow possible, snow possibly heavy at times),
  • Mostly cloudy and a bit warmer with snow Thursday (snow possibly heavy at times) and blustery (Pass Wind: W 15-25 mph), snow possibly heavy at times at night and windy (Pass Wind: W 20-30 mph Gusts to 50 mph),
  • Mostly cloudy with snow and rain and a bit warmer Friday (snow possibly heavy at times), snow and rain Friday night (snow possibly heavy at times),
  • snow level at the surface tonight through Thursday, then 2,000 ft, Thursday night and Friday, then 4,000 ft. Friday night,
  • highs 34-26 lows 22-28.
  • Mostly cloudy with snow and rain and a bit warmer Saturday (snow possibly heavy at times), snow and rain Saturday night,
  • Mostly cloudy with AM snow likely (70%), a bit cooler with a good (50%) of rain and snow Sunday, a (40%) chance of evening rain and snow, partly cloudy with a (40%) chance of rain and snow late at night,
  • A mix of clouds and sun and a bit warmer with a (40%) chance of snow and rain Monday (Martin Luther King, Jr. Day), mostly cloudy with a (40%) chance of rain and snow Monday night,
  • Clouds and su0n with a good (50%) chance of AM rain and snow, then a mix of clouds and sun with rain and snow likely (70%) Tuesday afternoon.
  • snow level  4,000 ft. Saturday, 3,000 ft. Saturday night and Sunday, 2,500 ft. Sunday night, 3,000 ft. Monday, 3,500 ft. Monday night, then 4,000 ft. Tuesday.
  • highs 32-30 warming to 35 Tuesday lows 22-18 warming 22 Monday night.