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February 25, 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 PM TODAY UNTIL 4 PM MONDAY ABOVE 1,000 FT. FOR THE NORTHERN OREGON CASCADE FOOTHILLS AND THE NORTHERN OREGON CASCADES.
  • A WINTER STORM WARNING IS IN EFFECT FROM 10 PM TODAY UNTIL 4 PM MONDAY ABOVE 1,000 FT. FOR THE CASCADE FOOTHILLS IN LANE COUNTY, AND THE CASCADES IN LANE COUNTY.
  • A WINTER STORM WARNING IS IN EFFECT FROM 4 PM TODAY UNTIL 4 PM MONDAY ABOVE 1,000 FT. FOR THE UPPER HOOD RIVER VALLEY.
  • A WINTER STORM WARNING IS IN EFFECT FROM 10 PM TODAY UNTIL 1 AM TUESDAY FOR NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY.
  • A WINTER STORM WARNINGIS IN EFFECT FROM 10 PM TODAY UNTIL 1 AM TUESDAY FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS, THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
  • A WINTER STORM WARNING IS IN EFFECT FROM 4 PM TODAY UNTIL 4 PM MONDAY ABOVE 3,000 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
  • A WINTER STORM WATCH IS IN EFFECT FROM FROM THIS EVENING THROUGH LATE MONDAY NIGHT ABOVE 3,000 FT. FOR THE NORTHERN BLUE MOUNTAINS OF OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT FROM 10 PM TONIGHT UNTIL 4 PM MONDAY ABOVE 1,000 FT. FOR THE CENTRAL COAST RANGE OF OF WESTERN OREGON.
  • A WIND ADVISORY IS IN EFFECT FROM 3 PM TODAY UNTIL 3 PM MONDAY FOR THE LOWER COLUMBIA BASIN OF OREGON, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND NORTH CENTRAL OREGON.
  • A WIND ADVISORY IS IN EFFECT FROM 11 AM MST UNTIL 8 PM MST MONDAY FOR THE OREGON LOWER TREASURE VALLEY.
  • A WIND ADVISORY IS IN EFFECT FROM 7AM UNTIL 10 PM MONDAY FOR CENTRAL AND EASTERN LAKE COUNTY
  • A HIGH WIND WATCH IS IN EFFECT FROM 8 AM MST TO 5 PM MST MONDAY FOR HARNEY COUNTY AND MALHEUR COUNTY.
  • A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH THIS AFTERNOON FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
  • A BEACH HAZARDS STATEMENT FOR DANGEROUS SNEAKER WAVES IS IN EFFECT THROUGH LATE TONIGHT FOR THE NORTH OREGON COAST AND THE CENTRAL OREGON COAST.

HEALTH ADVISORIES

  • 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:

  • The Upper Level Low Pressre Trough (“U” shape) approaches the coast. The graphics for days 1-3  show high pressure held on for one more day today. A cold front moves in Sunday afternoon returning the rain and cooler temperatures. The graphics for days 3-7    Wednesday through Sunday show a cold front moving over the Pacific Northwest Thursday and Friday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy and a bit cooler with rain this afternoon (under 0.10 in. of rain possible), rain tonight (0.50 in. of snow possible),
  • Mostly cloudy with AM rain and a slight (20%) chance of thunderstorms, showers and much cooler with a slight (20%) chance of thunderstorms Monday afternoon (0.25 in. of rain possible), mostly cloudy with a slight (20%) chance of evening thunderstorms, rain and snow likely (70%) at night (under 0.10 in. of rain possible, snow level 1,000 ft.),
  • Mostly cloudy and a bit warmer with rain likely (70%) Tuesday, then rain Tuesday night.
  • highs 56-45 warming to 47 Tuesday lows 38-33 warming to 40 Tuesday night.
  • Mostly cloudy and a bit warmer with rain Wednesday, rain Wednesday night,
  • Mostly cloudy and a bit cooler with rain and breezy Thursday, rain at night (snow level 1,000 ft.),
  • Mostly cloudy with rain Friday, rain with snow likely (70%) Friday night (snow level 1,000 ft.)
  • Mostly cloudy with ran and snow Saturday (snow level 1,000 ft.)
  • highs near 45 lows 39-33. (seasonal averages high 53 low 35)

Forecast for the Umpqua Valley including Roseburg:

  • Patchy AM fog, mostly cloudy and a bit cooler with a slight (20%) chance of rain this afternoon, cloudy with a good (50%) chance of evening rain, rain late tonight (0.25 in. of rain possible, snow level 2,500 ft. late tonight,
  • Mostly cloudy and colder with rain showers and snow with a slight (20%) chance of thunderstorms Monday (snow level 1,500 ft.), a good (50%) chance of rain and snow late at night (snow level 900 ft.),
  • Mostly cloudy with a (30%) chance of rain and snow and a bit warmer Tuesday, a (40%) chance of evening rain and snow, then a (40%) chance  of rain late Tuesday night.
  • highs 60-47 warming to 49 Tuesday lows 42-35 warming to 40 Tuesday night.
  • Mostly cloudy and a bit warmer with rain Wednesday, rain Wednesday night,
  • Mostly cloudy and a bit cooler with rain and snow Thursday (AM snow possibly heavy at times), rain and snow at night,
  • Mostly cloudy with rain and snow and a bit cooler Friday, evening rain and snow, rain and snow likely (70%) late Friday night,
  • Then mostly cloudy with rain and snow likely (70%) Saturday.
  • highs 52-43 lows 39-32t. (seasonal average high 56 low 38)

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

  • Patchy AM inland fog, mostly cloudy and a bit cooler with a slight (20%) chance of rain this afternoon, cloudy with rain tonight (0.25 in. of rain possible),
  • Mostly cloudy and a bit cooler with coastal showers likely (70%) and a slight (20%) chance of  thunderstorms Monday while inland AM rain and a slight (20%) chance of thunderstorms with inland showers likely (70%) and a slight (20%) chance of thunderstorms Monday afternoon (snow level 1,500 ft.), a good (50%) chance of evening coastal showers with a slight (20%) chance of thunderstorms and a good (50%) chance of coastal rain late at night while inland evening showers and a slight (20%) chance of thunderstorms and a good (50%) chance of inland rain and snow late at night (snow level 1,500 ft.),
  • Mostly cloudy with a (30%) chance of rain Tuesday, a good (50%) chance of evening rain, then rain Tuesday night.
  • highs 56-49 lows 42-38 warming to 44 Tuesday night.
  • Mostly cloudy and a bit warmer with rain and breezy Wednesday and Wednesday night,
  • Mostly cloudy and a bit cooler with rain and breezy Thursday, rain and snow and breezy at night,
  • Mostly cloudy and breezy with rain and snow and a bit cooler Friday, evening rain and snow, rain and snow likely (70%) late Friday night,
  • Then mostly cloudy and a bit warmer with rain and snow Saturday.
  • highs 53-44 warming to 46 Friday night lows 42-36. (seasonal average high 54 low 41)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • A mix of clouds and sun with rain likely (70%) and a bit cooler this afternoon (under 0.10 in. of rain possible), snow and rain and blowing snow tonight (1.00 in. of rain possible, 6-12 in. of snow possible, blowing snow, snow possibly heavy at times visibility 0.25 miles or less),
  • Mostly cloudy with snow (areas of AM blowing snow), brisk wind (Pass Winds: W 15-25 mph), snow and cooler Monday afternoon (blowing snow, snow possibly heavy at times), evening snow with and patchy blowing snow, snow with patchy blowing snow late Monday night, breezy (Pass Wind: W 15-20 mph)
  • Mostly cloudy and a bit cooler with snow likely (70%) Tuesday, then snow likely (70%)  Tuesday night (snow possibly heavy at times).
  • snow level 4,500 ft. today, 5,000 ft. falling to 3,500 ft. late tonight, at the surface Monday through Tuesday, then 2,500 ft. Tuesday night.
  • highs 43-29 lows 25-19 warming to 24 Tuesday night.
  • Mostly cloudy and a bit warmer with rain and snow Wednesday, rain and snow and breezy Wednesday night (snow possibly heavy at times),
  • Mostly cloudy and a bit cooler with snow (possibly heavy at times) Thursday, and at night (snow possibly heavy at times),
  • Mostly cloudy and a bit cooler with snow (possibly heavy at times) Friday, snow (possibly heavy at times) Friday night,
  • Then mostly cloudy with snow and a bit cooler Saturday.
  • snow level 4,500 ft. Wednesday, 4,000 ft. Wednesday night, 2,500 ft. Thursday, 1,500 ft. Thursday night, 2,000 ft. Friday, then at the surface Friday night and Saturday.
  • highs 32-29 lows 28-19.