TIM CHUEY WEATHER

April 9, 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 FLOOD WARNING IS IN EFFECT UNTIL LATE FRIDAY EVENING FOR THE OWYHEE RIVER BELOW THE OWYHEE DAM AFFECTING MALHEUR COUNTY.
• A FROST ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT UNTIL 9 AM WEDNESDAY FOR THE NORTH OREGON COAST LOWLANDS, THE NORTH OREGON COAST RANGE, AND THE UPPER HOOD RIVER VALLEY.

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 Lever High Pressure Ridge  brings the Pacific Northwest sunshine.  The graphics for days 1-3  show a frontal system moving into the Pacific Northwest today having little influence. The graphics for days 3-7   Friday through Tuesday show frontal systems moving over the Pacific Northwest Friday and Sunday through Monday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

• AM clouds, mostly sunny this afternoon, partly cloudy tonight,
• Mostly sunny and a bit warmer Wednesday, partly cloudy at night,
• A mix of clouds and sun Thursday, then mostly cloudy with a good (50%) chance of rain Thursday night.
• highs 62-65 lows 38-42.
• Mostly cloudy and cooler rain likely (70%) Friday, a good (50%) chance of rain Friday night,
• A mix of clouds and sun with a good (50%) chance of rain Saturday, mostly cloudy with a good (50%) chance of rain and a slight (20%) chance of thunderstorms at night,
• Mostly cloudy and a bit cooler with a good (50%) chance of rain Sunday, a (50%) chance of rain Sunday night,
• Then a mix of clouds and sun and a bit cooler with a good (50%) chance of rain Monday.
• highs 62-56 lows 45-40. (seasonal averages high 60 low 39)

Forecast for the Umpqua Valley including Roseburg:

• Mostly cloudy with patchy dense AM fog, partly cloudy and a bit warmer this afternoon, partly cloudy tonight,
• AM clouds, sunny and a bit warmer Wednesday afternoon, mostly cloudy in the evening, partly cloudy late at night,
• Partly cloudy and a bit cooler Thursday, a slight (20%) chance of evening rain, then mostly cloudy with a (30%) chance of rain Thursday night.
• highs 65-69 cooling to 68 Thursday lows 42-44.
• Mostly cloudy and cooler with showers likely (70%) Friday, showers likely (70%) Friday night,
• Mostly cloudy and a bit warmer with a good (50%) chance of showers Saturday, a (40%) chance of showers at night,
• Mostly cloudy with a (40%) chance of showers and a bit warmer Sunday, a slight (20%) chance of showers Sunday night,
• Mostly cloudy with a slight (20%) chance of AM rain and snow showers, then a slight (20%) chance of showers and a bit cooler Monday afternoon.
• highs 62-64 cooling to 56 Monday lows 45-42. (seasonal averages high 62 low 42)

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

• Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer this afternoon, mostly cloudy tonight,
• AM clouds, sunny and a bit warmer Wednesday afternoon, partly cloudy at night,
• Mostly cloudy and a bit cooler Thursday, then mostly cloudy with a good (50%) chance of rain Thursday night.
• highs 58-60 cooling back to 58 Thursday lows near 42.
• Mostly cloudy and a bit cooler with showers likely (70%) Friday, showers likely (70%) Friday night,
• Mostly cloudy and a bit warmer with a (40%) chance of showers Saturday, a (40%) chance of showers at night,
• Mostly cloudy with a (40%) chance of showers and a bit cooler Sunday, a slight (20%) chance of showers Sunday night,
• Then mostly cloudy and a bit cooler with a (30%) chance of showers Monday.
• highs 57-59 cooling to cooling to 54 Monday lows 44-42. (seasonal average high 56 low 43)

Forecast for the Northern Oregon Cascades including Willamette Pass:

• Clouds and sun with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit warmer this afternoon, just partly cloudy tonight,
• Mostly sunny and warmer Wednesday, partly cloudy in the evening, mostly clear late at night,
• Mostly sunny Thursday, partly cloudy with a good (50%) chance of evening rain and snow, then mostly cloudy with a good (50%) chance of rain and snow late Thursday night.
• snow level 5,500 ft. today, free air freezing level 8,000 ft. rising to 9,000 ft. late tonight, 9,000 ft. rising to 10,000 ft. Wednesday afternoon, 10,000 ft. Wednesday night, 9,000 ft. Thursday, then snow level 6,500 ft. Thursday night.
• highs 49-58 lows 30-35.
• Mostly cloudy with rain and snow Friday, rain showers and snow showers likely (70%) with a slight (20%) chance of thunderstorms Friday night,
• Mostly cloudy with rain and snow showers likely (70%) and a bit cooler with slight (20%) chance of thunderstorms Saturday, rain, snow likely (70%) with a slight (20%) chance of thunderstorms at night,
• Mostly cloudy with a good (50%) chance of AM rain and snow, partly cloudy with a good (50%) chance of rain and snow Sunday afternoon, mostly cloudy with a good (50%) chance of rain and snow Sunday night,
• Mostly cloudy with a good (50%) chance of AM rain and snow, then partly cloudy and a bit cooler with a good (50%) chance of rain and snow Monday afternoon.
• snow level 6,000 ft. Friday, 5,500 ft. Friday night and Saturday, 5,000 ft. Saturday night, 4,000 ft. Sunday and Sunday night, then 3,500 ft. Monday.
• highs 52-39 lows 36-28.