TIM CHUEY WEATHER

April 10, 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 UNTIL 9 AM TODAY 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 the next frontal system moving through Pacific Northwest Thursday. The graphics for days 3-7   Saturday through Wednesday show a frontal system moving over the Pacific Northwest between Sunday and Monday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

• Mostly sunny and a bit warmer today, partly cloudy tonight,
• A mix of clouds and sun and a bit cooler Thursday, mostly cloudy with a slight (20%) chance of evening rain, a good (50%) chance of rain late at night,
• Mostly cloudy and cooler a good (50%) chance of rain Friday, then a good (50%) chance of showers Friday night.
• highs 66-62 lows 39-44.
• A mix of clouds and sun and a bit warmer with a (40%) chance of showers Saturday, mostly cloudy with a (40%) chance of showers Saturday night,
• Mostly cloudy and a bit cooler with a (40%) chance of showers Sunday, a slight (20%) chance of showers at night,
• A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Monday, mostly cloudy with a (40%) chance of showers Monday night,
• Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Tuesday.
• highs 68-57 lows 44-37. (seasonal averages high 60 low 39)

Forecast for the Umpqua Valley including Roseburg:

• Patchy AM and late night fog, partly cloudy and a bit warmer this afternoon, mostly cloudy in the evening, partly cloudy late tonight,
• Partly cloudy and a bit cooler Thursday, a slight (20%) chance of evening rain, mostly clear with patchy fog late at night,
• Mostly cloudy and cooler with showers likely (70%) Friday, then a good (50%) chance of showers Friday night.
• highs 72-64 lows 43-46.
• Mostly cloudy and a bit warmer with a (30%) chance of showers Saturday, a (30%) chance of showers Saturday night,
• Mostly cloudy with a (30%) chance of showers and a bit warmer Sunday, a slight (20%) chance of showers at night,
• Mostly cloudy with a (20%) chance of showers and a bit cooler Monday, partly cloudy with a slight (20%) chance of evening showers, a slight (20%) chance of rain and snow showers late Monday  night,
• Partly cloudy with a slight (20%) chance of AM rain and snow showers, then mostly cloudy and a bit cooler with a (30%) chance of showers Tuesday afternoon.
• highs 68-58 lows 46-39. (seasonal averages high 62 low 42)

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

• Patchy AM and late night fog, partly cloudy and a bit warmer today, partly cloudy tonight,
• Patchy AM fog, mostly cloudy and a bit cooler Thursday afternoon, mostly cloudy with a good (50%) chance of evening showers, showers likely (70%) late at night (under 0.10 in. of rain possible),
• Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers Friday afternoon, then a (40%) chance of showers Friday night.
• highs 58-60 cooling back to 58 Thursday lows near 42.
• Mostly cloudy and a bit warmer with a (30%) chance of showers Saturday and Saturday night,
• Mostly cloudy with a (30%) chance of showers and a bit cooler Sunday, a slight (20%) chance of showers at night,
• Mostly cloudy and a bit cooler with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of showers Monday night,
• Then mostly cloudy and a bit cooler with a (30%) chance of showers Tuesday.
• 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:

• Mostly sunny and warmer today, partly cloudy in the evening, mostly clear late tonight,
• Mostly sunny and a bit cooler Thursday, mostly cloudy with a slight (20%) chance of evening rain, a good (50%) chance of rain and snow late at night,
• Mostly cloudy with rain likely (70%) with snow and a bit cooler Friday, then showers showers likely (70%) with possible snow showers and thunderstorms Friday night.
• free air freezing level 9,000 ft. rising to 10,000 ft. this afternoon, 10,000 ft. tonight, 9,000 ft. Thursday, snow level 6,000 ft. Thursday night, 6,000 ft. Friday, then 6,500 ft. Friday night.
• highs 58-52 lows 34-37.
• A mix of clouds and sun with a good (50%) of rain and snow showers and a bit warmer Saturday, mostly cloudy with a good (50%) chance of rain and snow showers with a slight (20%) chance of thunderstorms at night,
• Mostly cloudy with a good (50%) chance of AM rain and snow, partly cloudy and a bit cooler with a good (50%) chance of rain and snow Sunday afternoon, mostly cloudy with a good (50%) chance of rain and snow showers Sunday night,
• Mostly cloudy with a good (50%) chance of AM snow and rain showers, partly cloudy and a bit cooler with a good (50%) chance of snow and rain showers Monday afternoon, mostly cloudy with a good (50%) chance of snow and rain showers Monday night,
• Then a mix of clouds and sun and a bit cooler with a good (50%) chance of snow and rain showers Tuesday .
• snow level  6,500 ft. Saturday and Saturday night, 5,000 ft. Sunday, 4,500 ft. Sunday night, 3,500 ft. Monday, 3,000 ft. Monday night, then 3,000 ft. Tuesday.
• highs 56-42 lows 35-25.