TIM CHUEY WEATHER

April 23, 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:

An Upper Level High Pressure Ridge (“Arch” shape) takes over bringing dry weather and sunshine.  The graphics for days 1-3  show the next front is on the way. The graphics for days 3-7    Friday through Tuesday show two frontal systems headed our way. One front moves across the Pacific Northwest Friday  with another between Sunday and Monday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

• Mostly sunny and a bit warmer today, mostly clear tonight,
• A mix of clouds and sun and a bit cooler Wednesday, partly cloudy at night,
• Mostly cloudy and cooler with rain Thursday, then rain Thursday night.
• highs 73-57 lows 40- 48.
• Mostly cloudy with rain and a bit warmer Friday, a good (50%) chance of rain Friday night,
• Mostly cloudy and a bit warmer with rain likely (70%) and a bit warmer Saturday, mostly cloudy with a good (50%) chance of rain at night,
• Then mostly cloudy with rain likely 70%) Sunday through Monday.
• highs 58-60 lows 4-43. (seasonal averages high 63 low 41)

Forecast for the Umpqua Valley including Roseburg:

• Partly cloudy and a bit warmer today, clear tonight,
• Partly cloudy and a bit cooler Wednesday, partly cloudy at night,
• Mostly cloudy with showers and cooler Thursday, then showers Thursday night,
• highs 75-58 lows 43-49.
• Mostly cloudy with showers Friday, a good (50%) chance of showers Friday night,
• Mostly cloudy and a bit cooler with showers likely (70%) Saturday and at night,
• Mostly cloudy and a bit cooler with a (40%) chance of showers Sunday, a (40%) chance of showers Sunday night,
• Then mostly cloudy with a (40%) chance of showers Monday.
• highs 58-62 cooling to 60 Sunday warming back to 62 Monday  lows 46-44. (seasonal averages high 65 low 44)

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

• Mostly cloudy start, sunny this afternoon, mostly clear this evening, mostly cloudy late tonight,
• AM clouds, partly cloudy and a bit cooler Wednesday afternoon, mostly cloudy with a slight (20%) chance of coastal rain late at night,
• Mostly cloudy with showers and a bit cooler Thursday, then showers Thursday night.
• highs 60-56 lows 42-48.
• Mostly cloudy with showers Friday, a good (50%) chance of showers Friday night,
• Mostly cloudy with a good (50%) chance of AM rain, showers likely (70%) Saturday afternoon, a good (50%) chance of showers at night,
• Then mostly cloudy with a good (50%) chance  of showers Sunday through Monday.
• highs near 56 lows near 44. (seasonal average high 57 low 45)

Forecast for the Northern Oregon Cascades including Willamette Pass:

• Mostly sunny today, mostly clear tonight,
• Mostly sunny and a bit cooler Wednesday, partly cloudy at night,
• Mostly cloudy with rain and snow showers and cooler Thursday, then rain and snow showers Thursday night (snow possibly heavy at times).
• free air freezing level 11,000 ft. tonight, 10,000 ft. Tuesday, 10,000 ft.Tuesday night, 5,000 ft. Wednesday, 5,500 ft. Wednesday night, 5,000 ft. Thursday, then 5,500 ft. Thursday night.
• highs 63-43 lows near 35.
• Mostly cloudy and a bit cooler with rain and snow showers Friday (snow possibly heavy at times), rain and snow showers likely (70%) Friday night,
• Mostly cloudy and a bit warmer with rain and snow showers likely (70%) Saturday, rain and snow showers likely (70%) at night,
• Mostly cloudy and a bit warmer with rain and snow showers likely (70%) Sunday, then rain and snow showers likely (70%) Sunday night and Monday.
• snow level 5,000 ft. Friday through Saturday, 5,500 ft. Saturday night, 5,000 ft. Sunday and Sunday night, then 4,000 ft. Monday.
• highs 40-46 cooling to 43 Monday lows near 32.