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Tim Chuey Weather

by | Feb 20, 2024 | Weather

February 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

NONE AT THIS TIME.

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 High Pressure Ridge (“Arch” shape) has moved to the east and will be followed by an Upper Level Low Pressure Trough (“U” shape). The graphics for days 1-3  show low pressure off the California coast that’s moving northward along the Oregon coast while dragging a cold front behind it today. The graphics for days 3-7    Friday through Tuesday show active weather with complex frontal systems active over the Pacific Ocean moving toward the Pacific Northwest.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with showers and a slight (20%) chance of thunderstorms tonight (0.25 in. of rain possible, more in storms),
  • Mostly cloudy with AM showers, a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Wednesday afternoon (0.25 in. of rain possible, more in storms), a good (50%) chance of evening showers and a slight (20%)n chance of thunderstorms, just partly cloudy with a slight (20%) chance of showers late Wednesday night (under 0.10 in. of rain possible, more in storms),
  • A mix of clouds and sun and a bit warmer Thursday, mostly cloudy at night,
  • A mix of clouds and sun Friday, then partly cloudy Friday night,
  • lows 46-37 highs 54-56.
  • Partly cloudy and a bit warmer Saturday, partly cloudy Saturday night,
  • Mostly cloudy and a bit cooler with a good (50%) chance of Sunday, rain at night,
  • Mostly cloudy with rain and a slight (20%) chance of snow and a bit cooler Monday (snow level 1,500 ft.), rain with a slight (20%) chance of snow Monday night (snow level 1,000 ft.),
  • Then mostly cloudy with a slight (20%) chance of snow Tuesday.
  • highs 58-46 lows 38-35. (seasonal averages high 53 low 35)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with early evening rain likely (70%), a good (50%) chance of  late evening rain, rain likely (70%) with a slight (20%) chance of thunderstorms late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%), a good (50%) chance of rain and a bit cooler Wednesday afternoon (0.10 in. of rain possible), a good (50%) chance of evening rain, partly cloudy with a good (50%) chance of rain late at night (under 0.10 in. of rain possible),
  • Some AM clouds, mostly cloudy and a bit warmer with a slight (20%) chance of showers Thursday afternoon, a slight (20%) chance of evening showers, a slight (20%) chance of rain late at night,
  • Partly cloudy and a bit warmer Friday, partly cloudy Friday night.
  • lows 46-40 warming to 42 Thursday night cooling back to 40 Friday night highs 55-62.
  • Some AM clouds, sunny and a bit warmer Saturday afternoon, mostly clear in the evening, partly cloudy Saturday night,
  • Mostly cloudy and a bit cooler with a slight (20%) chance of rain Sunday, evening rain likely (70%), rain late at night,
  • Mostly cloudy and a bit cooler rain and snow showers Monday, rain and snow showers Monday night,
  • Then mostly cloudy and a bit warmer with rain and snow showers Tuesday .
  • highs 63-45 warming to 48 Tuesday lows 42-37 (seasonal average high 55 low 38)

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

  • Mostly cloudy with early evening coastal rain and a slight (20%) chance of thunderstorms and coastal showers with a slight (20%) chance of thunderstorms late at night while inland evening rain likely (70%) with inland rain late tonight (0.25 in. of rain possible),
  • Mostly cloudy with AM coastal rain likely (70%) and a slight (20%) chance of thunderstorms while inland AM rain likely (70%), a (40%) chance of  in the afternoon rain and a bit warmer while inland AM rain and a good (50%) chance of rain and a bit warmer Wednesday afternoon (0.10 in. of rain possible), mostly cloudy with a (40%) chance of coastal rain while a good (50%) chance of inland rain Wednesday night (under 0.10 in. of rain possible),
  • Mostly cloudy with a slight (20%) chance of showers and a bit warmer Thursday afternoon while partly cloudy in the AM and mostly cloudy with a slight (20%) chance of showers Thursday afternoon, mostly cloudy with a (30%) chance of evening showers, a (30%) chance of rain late at night,
  • Mostly cloudy with a slight (20%) chance of AM rain, partly cloudy and a bit warmer Friday afternoon, then partly cloudy Friday night.
  • lows 46-42 highs 56-62.
  • Sunny and a bit cooler Saturday, mostly clear in the evening, mostly clear in the evening, partly cloudy late Saturday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, rain likely (70%) and a bit cooler Sunday afternoon, evening rain likely (70%), rain at night,
  • Mostly cloudy and a bit cooler with showers Monday and Monday night,
  • Then mostly cloudy and a bit warmer with showers Tuesday.
  • highs 59-49 warming to 52 Tuesday lows 42-39. (seasonal averages high 54 low 41).

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with a good (50%) chance of evening rain and snow showers, rain and snow showers likely (70%) late tonight (0.25 in. of rain possible, 2 in. of snow possible),
  • Mostly cloudy and a bit cooler with rain and snow showers Wednesday (0.50 in. of rain possible, 1-4 in. of snow possible), a good (50%) chance of evening rain and snow showers, partly cloudy with a slight (20%) chance of showers Wednesday night (0.10 in. of rain possible, 1 in. of snow possible),
  • Partly cloudy and a bit warmer Thursday, partly cloudy at night,
  • Partly cloudy and a bit warmer Friday, partly cloudy Friday night.
  • snow level 4,500 ft. tonight, 4,000 ft. Wednesday and Wednesday night, free air freezing level 5,000 ft. rising to 6,000 ft Thursday afternoon, 6,500 ft. rising to 7,000 ft. Thursday night, then 8,000 ft. Friday and Friday night.
  • lows 30-26 warming to 28 Friday night highs 37-46.
  • Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
  • A mix of clouds and sun with a (40%) chance of rain and snow and a bit cooler Sunday, snow with rain likely (70%) Sunday night,
  • Mostly cloudy and colder with snow Monday (snow possibly heavy at times), snow at night (snow possibly heavy at times),
  • Mostly cloudy and a bit warmer with snow and a slight (20%) chance of rain Tuesday (snow possibly heavy at times).
  • free air freezing level 8,000 ft. Saturday 7,500 ft. Saturday night, snow level 5,000 ft. Sunday, 3,500 ft. Sunday night, 1,500 ft. Monday, at the surface Monday night, then 2,000 ft. Tuesday.
  • highs 44-47 cooling to 29 Monday lows 28-24.