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Tim Chuey Weather

by | Apr 20, 2023 | Weather

April 20, 2023

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 RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE SOUTH UMPQUA RIVER AND MAINSTEM UMPQUA RIVER. THE ADVISORY COVERS THE SOUTH UMPQUA RIVER FROM CANYONVILLE DOWNSTREAM TO THE CONFLUENCE OF THE MAINSTEM UMPQUA RIVER, AND THE MAINSTEM UMPQUA RIVER DOWNSTREAM PAST ELKTON TO LAWSON BAR. PEOPLE IN THE BEDROCK ALONG THE RIVERS EDGE ARE ARE KNOWN TO DEVELOP CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED AT SEVERAL ACCESS AREAS ALONG THE RIVER.

THE WEATHER PATTERN

An Upper Level Low Pressure Trough (“U” shape) is sending frontal systems our way and still even more moisture. The graphics for days 1-3 show a complex frontal system, warm front first followed by a cold front. The graphics for days 3-7  Sunday through next Thursday show the continuing series of complex frontal systems that will slide into the Pacific Northwest through the period.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with rain tonight (0.25 in. of rain possible),
  • Mostly cloudy and a bit warmer with a good (50%) chance of showers Friday (under 0.10 in. of rain possible), a good (50%) chance of evening showers, a slight (20%) chance of showers late Friday night (under 0.10 in. of rain possible),
  • Mostly cloudy with a slight (20%) chance of showers and a bit warmer Saturday and in the evening (under 0.10 in. of rain possible), a good (50%) chance of showers late at night (under 0.10 in. of rain possible),
  • Then mostly cloudy and a bit cooler with a good (50%) chance of showers Sunday and Sunday night.
  • lows 44-48 cooling to 43 Sunday night highs 56-64 cooling to 59 Sunday.
  • Clouds and sun with a (50%) chance of AM showers, a slight (20%) chance of showers and a bit cooler Monday afternoon, partly cloudy Monday night,
  • Then partly cloudy and a bit warmer Tuesday through Thursday.
  • highs 57-73 lows 42-38 warming to 45 Wednesday night. (seasonal averages high 62 low 43)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with evening showers, likely (70%) tonight (under 0.10 in. of rain possible),
  • Cloudy with a (30%) chance of showers and warmer Friday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers late Friday night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit warmer with a slight (20%) chance of showers Saturday and at night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday, a (30%) chance of showers Sunday night.
  • lows 45-50 cooling to 44 Sunday night highs 58-66 cooling to 62 Sunday.
  • Mostly cloudy with a slight (20%) chance of AM showers, mostly cloudy and a bit cooler Monday afternoon, partly cloudy Monday night,
  • Partly cloudy and a bit warmer Tuesday and Tuesday night,
  • Partly cloudy and a bit warmer Wednesday, mostly clear Wednesday night,
  • Then mostly sunny and a bit warmer Thursday.
  • highs 59-76 lows 42-47 (seasonal averages high 64 low 43)

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

  • Mostly cloudy with evening showers, showers likely (70%) late tonight (0.10 in. of rain possible),
  • Cloudy with a (30%) chance of showers and a bit warmer Friday (under 0.10 in. of rain possible), mostly cloudy with a slight (20%) chance of showers Friday night (under 0.10 in. of rain possible),
  • Mostly cloudy with a slight (20%) chance of showers and a bit warmer Saturday and at night (under 0.10 in. of rain possible),
  • Then mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday and Sunday night.
  • lows near 47-42 highs 57-62 cooling to 54 Sunday.
  • Partly cloudy and a bit warmer Monday, partly cloudy Monday night,
  • Then partly cloudy and a bit warmer Tuesday through Thursday.
  • highs 56-65 lows 39-44. (seasonal averages high 57 low 44)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with evening rain and snow (snow possibly heavy at times), rain late tonight (1 in. of rain possible, 1-4 in. of snow possible),
  • Mostly cloudy with AM rain and snow showers likely (70%), a good (50%) chance of  showers and a bit warmer Friday afternoon (0.25 in. of rain possible, 1 in. of snow possible), a good (50%) chance of showers Friday night,
  • A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Saturday, becoming mostly cloudy with a good (50%) chance of showers at night,
  • Mostly cloudy and a bit cooler with a good (50%) chance of showers Sunday, then rain and snow showers likely (70%) Sunday night.
  • snow level 5,500 ft. tonight and Friday, 6,500 ft. Friday night and Saturday, 7,000 ft. Saturday night, 6,000 ft. Sunday, then 4,500 ft. Sunday night.
  • lows 32-36 cooling to 29 Sunday night highs 42-48 cooling to 46 Sunday.
  • A mix of clouds and sun with a good (50%) chance of snow and rain showers and a bit cooler Monday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Monday night,
  • Partly cloudy and a bit warmer Tuesday, partly cloudy at night,
  • Mostly sunny and a bit warmer Wednesday, partly cloudy Wednesday night,
  • Some AM clouds, then mostly sunny and a bit warmer Thursday afternoon.
  • snow level  4,000 ft. Monday, 4,500 ft. Monday night, free air freezing level 9,000 ft. Tuesday, 11,000 ft. Tuesday night and Wednesday, then 12,000 ft. Thursday.
  • highs 39-62 lows  27-36.