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March 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 WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY ABOVE 4,500 FT. FOR THE CASCADES OF LANE COUNTY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY ABOVE 4,500 FT. FOR THE CASCADES IN MARION AND LINN COUNTIES.UNTIL 11 PM TUESDAY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY ABOVE 4,000 FT. FOR THE NORTH OREGON CASCADES.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 11 PM TUESDAY ABOVE 4,000 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.
  • A WINTER WEATHER ADVISORY IS IN EFFECT FROM 5 PM MONDAY UNTIL 5 PM TUESDAY FOR THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, AND THE SOUTHERN OREGON CASCADES.
  • A WIND ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR CENTRAL AND EASTERN LAKE COUNTY.
  • A WIND ADVISORY IS IN EFFECT FROM 5 PM MONDAY UNTIL 5 PM TUESDAY FOR CENTRAL AND EASTERN LAKE COUNTY.
  • A WIND ADVISORY IS IN EFFECT UNTIL 8 PM TONIGHT FOR NORTHERN AND EASTERN KLAMATH COUNTY  AND WESTERN LAKE COUNTY.

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:

An Upper Level High Pressure Ridge (“Arch” shape) will take over the Pacific Northwest weather.  The graphics for days 1-3  show the frontal system moving through today. The graphics for days 3-7    Wednesday through Sunday show the frontal activity through the period.

NOTE: Daylight Saving Time officially began at 2 AM this today March 10th. If you forgot to SPRING AHEAD” at bedtime last night by setting your clocks ahead by one hour do it now. The authorities recommend that everyone check home Smoke Detectors, CO Detectors, and RADON Detectors to make sure they are in working order. Depending on the type you have and how old they are you can replace bad batteries or replace the whole Detector.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of showers late tonight (0.10 in. of rain possible, more in storms),
  • Mostly cloudy with a good (50%) chance of AM rain, rain and a bit cooler Monday afternoon (0.50 in. of rain possible), evening rain, showers late  Monday night (0.50 in. of rain possible),
  • Mostly cloudy and a bit warmer with showers Tuesday (0.25 in,. of rain possible), a good (50%) chance of evening showers, a slight (20%) chance of evening showers, partly cloudy late at night,
  • A mix of clouds and sun and a bit warmer Wednesday, then just partly cloudy Wednesday night.
  • lows 40-43 cooling to 34  Wednesday night highs 49-54.
  • Some AM clouds, sunny and warmer Thursday afternoon, partly cloudy Thursday night,
  • Some AM clouds, sunny and a bit warmer Friday afternoon, mostly clear at night,
  • Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
  • Some AM clouds, then mostly sunny and a bit cooler Sunday afternoon.
  • highs 63-72 cooling to 68 Sunday lows 36-43. (seasonal averages high 56 low 37)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of showers late tonight (under 0.10 in. of rain possible, snow level 3,500 ft. falling to 3,000 ft.),
  • Cloudy with AM rain and snow, rain and a bit cooler Monday afternoon (under 0.10 in. of rain possible, snow level 2,500 ft. rising to 3,500 ft.), evening rain, showers late Monday night (0.10 in. of rain possible, snow level 3,500 ft. late at night),
  • Mostly cloudy with AM showers, showers likely (70%) and a bit warmer Tuesday afternoon (0.10 in. of rain possible, snow level 3,000 ft. falling to 2,500 ft.), a (40%) chance of rain and snow showers at night,
  • Mostly cloudy start, partly cloudy and a bit warmer Wednesday afternoon, then mostly clear Wednesday night.
  • lows 40-43 cooling to 35 Wednesday night highs 50-55.
  • Mostly sunny and a bit warmer Thursday and Friday, mostly clear both nights,
  • Mostly sunny and slightly warmer Saturday, mostly clear Saturday night,
  • Then mostly sunny Sunday.
  • highs 63-72 lows 38-46. (seasonal average high 58 low 39)

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

  • Mostly cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, a good (50%) chance of evening coastal showers continuing tonight while inland late evening rain likely (70%) and a (20%) chance of inland showers late tonight (0.10 in. of rain possible),
  • Mostly cloudy with AM coastal rain likely (70%) while a good (50%) chance of inland AM showers, a bit cooler with rain Monday afternoon and breezy (Wind: S 15-25 mph) Monday (0.25 in. of rain possible), evening rain, showers (0.25 in. of rain possible) late at night and breezy Monday night (Coastal Wind: S 20-30 mph  decreasing and shifting SW 10-20 mph late at night while Inland Wind: SW 10-20 mph late at night),
  • Mostly cloudy with AM showers, a good (50%) chance of coastal showers and a bit warmer Tuesday afternoon while inland showers likely (70%) and a bit warmer in the afternoon (0.10 in. of rain possible), a slight (20%) chance of evening coastal showers while a (30%) chance of inland showers at night,
  • Mostly cloudy start, partly cloudy and a bit warmer Wednesday afternoon, then mostly clear Wednesday night.
  • lows 42-44 cooling to 38 Wednesday night highs 52-55.
  • Sunny and a bit warmer Thursday, mostly clear Thursday night,
  • Mostly sunny and a bit warmer Friday, mostly clear at night,
  • Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
  • Some AM clouds, then sunny and a bit cooler Sunday afternoon.
  • highs 62-69 cooling to 64 Sunday lows 43-45 cooling back to 43 Saturday night. (seasonal average high 55 low 42)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with evening snow and rain showers likely (70%), a good (50%) chance of snow and rain showers late tonight (0.25 in. of rain possible, 1-3 in. of snow possible),
  • Mostly cloudy with rain and snow and a bit cooler Monday afternoon (0.25 in. of rain possible, 2 in. of snow possible), evening rain and snow, rain and snow showers late Monday night (0.75 in. of rain possible, 4-7 in. of snow possible, evening snow possibly heavy at times),
  • Mostly cloudy and a bit cooler with snow and rain showers Tuesday and brisk winds (Wind: SW 15-25 mph gusts to 35 mph), evening snow showers with rain showers likely (70%), a good (50%) chance of rain and snow showers Tuesday night,
  • A mix of clouds and sun and a bit warmer with a good (50%) chance of snow showers Wednesday, then just mostly clear Wednesday night.
  • snow level 3,000 ft. tonight and Monday, 4,000 ft. Monday night, 3,000 ft. Tuesday, 2,500 ft. Tuesday night and Wednesday, then free air freezing level 5,500 ft. Wednesday night.
  • lows 25-30 cooling to 23 Wednesday night highs 36-33 warming to 37 Wednesday.
  • Mostly sunny and warmer Thursday, mostly clear Thursday night,
  • Mostly sunny and a bit warmer Friday, mostly clear at night,
  • Then mostly sunny Saturday and Sunday, mostly clear Saturday night,
  • free air freezing level 9,000 ft. Thursday and Thursday night, 12,000 ft. Friday and Friday night, then 11,000 ft. Saturday through Sunday.
  • highs 48-55 lows 29-33.