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Tim Chuey Weather

by | Apr 29, 2024 | Weather

April 30, 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.

(NOTE: I won’t be able to publish my forecasts starting April 30th Due to shoulder surgery. I’ll resume as soon as possible.).

ADVISORIES

  • A WINTER WEATHER ADVISORY IS IN EFFECT FROM 3 AM UNTIL 6 PM TODAY ABOVE 3,000 FT. FOR THE NORTH OREGON CASCADES AND THE CASCADES OF MARION AND LINN COUNTIES,
  • A FLOOD WARNING IS IN EFFECT UNTIL WEDNESDAY MORNING FOR THE OWYHEE RIVER BELOW THE OWYHEE DAM AFFECTING MALHEUR COUNTY.
  • A FREEZE WARNING IS IN EFFECT FROM 3 AM UNTIL 10 AM TODAY  FOR EASTERN CURRY COUNTY AND JOSEPHINE 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 Low Pressure Trough (“U” shape) sitting right over the Pacific Northwest. The graphics for days 1-3  show a frontal system that slid through Pacific Northwest and continues moving away from us. The graphics for days 3-7    Friday through Tuesday show the frontal systems that will be moving across the Pacific Northwest through the period.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy and bit cooler with showers and a slight (20%) chance of thunderstorms today (0.25 in. of rain possible, more in storms), mostly cloudy with a good (50%) chance of evening showers and a slight (20%) chance of thunderstorms (under 0.10 in. of rain possible more in storms), partly cloudy with patchy frost tonight,
  • Mostly sunny and a bit warmer Wednesday, partly cloudy with a slight (20%) chance of evening rain, mostly cloudy with a good (50%) chance of rain late at night,
  • A mix of clouds and sun and a bit warmer with a good (50%) chance of rain Thursday, then just partly cloudy Thursday night.
  • highs 56-68 lows 37-44 cooling to 40 Thursday night.
  • Mostly sunny and a bit warmer with a good (50%) chance of showers Friday, mostly cloudy with showers likely (70%) Friday night,
  • Mostly cloudy and a bit cooler with showers likely (70%) Saturday, a good (50%) chance of showers at night,
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday, mostly cloudy with a (50%) chance of showers Sunday night,
  • Then mostly cloudy with showers likely (70%) Monday.
  • highs 68-60 lows 47-43 (seasonal averages high 65 low 42)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a good (50%) chance  of AM rain showers and snow showers and a slight (20%) chance of thunderstorms, showers likely (70%) with a slight (20%) chance of thunderstorms this afternoon (snow level 2,000 ft. rising to 3,500 ft. this afternoon), partly cloudy with a slight (20%) chance of evening showers, partly cloudy with patchy frost late tonight,
  • Areas of AM frost, sunny and a bit warmer Wednesday afternoon, partly cloudy with a (30%) chance evening showers, partly cloudy with a (30%) chance of showers late at night (under 0.10 in. of rain possible),
  • Mostly cloudy with a (30%) chance of AM showers, partly cloudy and a bit warmer with a (30%) chance of showers Thursday, mostly clear in the evening, then partly cloudy late Thursday night.
  • highs 57-64 lows 40-45 cooling to 43 Thursday night.
  • Partly cloudy and a bit warmer with a slight (20%) chance of rain Friday afternoon, mostly cloudy with a good (50%) chance of evening rain, rain likely (70%) late Friday night,
  • Mostly cloudy with AM rain likely (70%), showers likely (70%) and cooler Saturday afternoon, a (40%) chance of showers at night,
  • Mostly cloudy and a bit cooler with a (40%) chance of showers Sunday and Sunday night,
  • Mostly cloudy with a good (50%) chance of AM rain, then rain likely (70%) Monday afternoon.
  • highs 72-62 lows 48-44 warming to 46 Sunday night. (seasonal average high 67 low 45)

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

  • Mostly cloudy with a good (50%) chance of showers  and a slight (20%) chance of thunderstorms and slightly warmer today (under 0.10 in. of rain possible), partly cloudy tonight with inland patchy frost late,
  • Sunny and a bit warmer Wednesday, partly cloudy with a (40%) chance of evening showers, mostly cloudy with a (40%) chance of showers late at night (under 0.10 in. of rain possible),
  • Mostly cloudy with a (40%) chance of AM showers, partly cloudy with a (40%) chance of showers Thursday afternoon, then just partly cloudy Thursday night.
  • lows 39-43 cooling to 42 Thursday night highs 55-59.
  • Partly cloudy with a slight (20%) chance of AM rain, mostly cloudy and a bit warmer with a (30%) chance of rain Friday, partly cloudy with a slight (20%) chance of evening rain, rain likely (70%) late Friday night,
  • Mostly cloudy and a bit cooler with rain likely (70%) Saturday, a good (50%) chance of showers at night,
  • Mostly cloudy and a bit warmer with a good (50%) chance of showers Sunday, a good (50%) chance of showers Sunday night,
  • Then mostly cloudy with rain likely (70%) Monday.
  • highs 62-56 warming to 57 Monday lows 45-43 warming back to 45 Sunday night. (seasonal average high 58 low 46)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy and a bit warmer with rain and snow showers and a slight (20%) chance of thunderstorms today (0.50 in. of rain possible, 1-4 in. of snow possible), evening snow showers and possible rain showers and thunderstorms, a slight (20%) chance of snow showers with widespread frost late  tonight (0.25 in. of rain possible, 2 in. of snow possible),
  • Widespread AM frost, sunny and warmer Wednesday, partly cloudy with a slight (20%) chance of evening rain and snow, mostly cloudy with a good (50%) chance of rain and snow late at night,
  • A mix of clouds and sun with a good (50%) chance of rain and snow showers and a bit warmer Thursday, then partly cloudy with a slight (20%) chance of showers late Thursday night.
  • snow level 2,500 ft. tonight, 2,500 ft. rising to  3,500 ft. Tuesday afternoon, 3,000 ft. Tuesday night, free air freezing level 5,500 ft. Wednesday afternoon, snow level 4,500 ft. Wednesday night, 5,000 ft. Thursday, then 5,500 ft. Thursday night.
  • highs 37-46 lows 24-32 cooling to 29 Thursday night.
  • Mostly sunny and a bit warmer with a good (50%) chance of showers Friday, showers likely (70%) Friday night,
  • Mostly cloudy with rain and snow showers Saturday, a good (50%) chance of rain and snow showers Saturday at night,
  • A mix of clouds and sun with snow showers likely (70%) and a good (50%) chance of rain showers and a bit cooler Sunday, mostly cloudy with a good (50%) chance of rain and snow showers Sunday night,
  • Then mostly cloudy with rain showers and snow showers likely (70%) Monday.
  • snow level 6,500 ft. Friday, 7,000 Friday night, 5,000 ft. Saturday, 4,500 ft. Saturday night, 5,000 ft. Sunday, then 5,500 ft. Sunday night and Monday.
  • highs 56-45 lows 35-32-38 cooling to 34 Sunday night.