TIM CHUEY WEATHER

April 1, 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) still hangs on for two more days. The graphics for days 1-3  show a frontal systems moving through the Pacific Northwest Tuesday. The graphics for days 3-7    Thursday through Monday show a frontal system moving through the Pacific Northwest between Saturday and next Sunday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

• Some evening clouds, mostly cloudy late tonight,
• Sunny and a bit warmer Tuesday, becoming mostly cloudy with rain Tuesday night (0.10 in . of rain possible),
• Mostly cloudy with AM rain, showers likely (70%) and colder Wednesday afternoon (0.10 in. of rain possible), a good (50%) chance of showers at night with a (40%) chance of snow showers late Wednesday night (under 0.10 in. of rain possible),
• Mostly cloudy with a good (50%) chance of rain and snow showers Thursday afternoon (snow level 1,500 ft.), mostly cloudy with a slight (20%) chance of evening showers, then partly cloudy with a slight (20%) chance of showers late Thursday night.
• lows 43-34 highs 73-52.
• A mix of clouds and sun and a bit warmer with a good (50%) chance of showers Friday, mostly cloudy with a good (50%) chance of showers Friday night,
• Mostly cloudy with a good (50%) chance of shower Saturday and at night,
• Mostly cloudy and a bit warmer with a good (50%) chance of rain Sunday, a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers Sunday night,
• Then a mix of clouds and sun and a bit warmer with (40%) of showers Monday.
• highs 54-60 lows 39-37. (seasonal averages high 59 low 39)

Forecast for the Umpqua Valley including Roseburg:

• Mostly clear tonight,
• Sunny and a bit warmer Tuesday, mostly clear in the evening, mostly cloudy with a good (50%) chance of rain late Tuesday night (under 0.10 in. of rain possible),
• Mostly cloudy with AM rain, colder with rain and snow likely (70%) Wednesday afternoon (0.10 in. of rain possible, snow level 2,500 ft. falling to 2,000 ft. in the afternoon), evening rain and snow likely (70%), a good (50%) chance of rain and snow late Wednesday night (under 0.10 in. of rain possible, snow level 1,500 ft.),
• Mostly cloudy with a good (50%) chance of AM rain and snow, rain and snow likely (70%) with a slight (20%) chance of thunderstorms and a bit warmer Thursday afternoon, a (40%) chance of evening rain and snow, then partly cloudy with a slight (20%) chance of rain and snow Thursday night.
• lows 32-36 highs 74-49 warming to 52 Thursday.
• Mostly cloudy and a bit warmer with a (40%) chance of rain and snow Friday, a (30%) chance of rain and snow Friday night,
• Mostly cloudy with a (30%) chance of AM rain and snow, a (40%) chance of rain and a bit warmer Saturday afternoon, evening rain likely (70%), a good (50%) chance  of rain and snow late at night,
• Mostly cloudy with a good (50%) chance of AM rain and snow, a good (50%) chance of rain and a bit warmer Sunday afternoon, a (30%) chance of evening rain, partly cloudy with a slight (20%) chance of rain late Sunday night,
• Mostly cloudy and a bit warmer with a slight (20%) chance of AM rain and snow, then a slight (20%) chance of rain Monday.
• highs 53-62 lows near 38 . (seasonal averages high 60 low 41)

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

• Mostly clear this evening, partly cloudy with patchy fog late tonight,
• Partly cloudy with patchy AM coastal fog while areas of inland fog, partly cloudy and a bit cooler Tuesday afternoon and mostly cloudy with a  good (50%) chance of evening rain, coastal rain late Tuesday night while inland rain likely (70%) late Tuesday night (0.10 in. of rain possible),
• Mostly cloudy with AM coastal rain likely (70%) and a good (50%) chance of coastal rain and a bit cooler in the afternoon while inland AM rain and inland rain likely (70%) and a bit cooler Wednesday afternoon (under 0.10 in. of rain possible), a good (50%) chance of evening coastal rain and coastal rain likely (70%) with a slight (20%) chance of thunderstorms while inland rain and snow likely (70%) late at night (under 0.10 in. of rain possible),
• Mostly cloudy with AM rain and snow likely (70%), rain likely (70%) with a slight (20%) chance of thunderstorms Thursday afternoon, a good (50%) chance of evening rain, then partly cloudy with a (30%) chance of rain and snow late Thursday night,
• lows 46-36 highs 55-52.
• Mostly cloudy with a (30%) chance of AM rain and snow, a (40%) chance of rain and a bit warmer Friday afternoon, a (30%) chance of rain Friday night,
• Mostly cloudy with a good (50%) chance of AM rain, rain likely (70%) Saturday afternoon and at night,
• Mostly cloudy with AM rain likely (70%), a bit warmer with a good (50%) chance of rain Sunday afternoon, a (30%) chance of rain Sunday night,
• Then mostly cloudy and a bit warmer with a (30%) chance of rain Monday.
• highs 54-58 lows 42-40. (seasonal average high 56 low 43)

Forecast for the Northern Oregon Cascades including Willamette Pass:

• Mostly clear tonight,
• Sunny and a bit warmer Tuesday, increasing clouds with evening rain likely (70%), mostly cloudy with rain and snow likely (70%) late Tuesday night,
• Mostly cloudy with AM rain and snow, snow and rain showers and colder Wednesday afternoon, evening snow and rain showers, snow showers likely (70%) late Wednesday night,
• Mostly cloudy with snow showers and a bit cooler Thursday, then a good (50%) chance of snow showers Thursday night.
•  free air freezing level 11,000 ft. tonight, 10,000 ft. rising to 11,000 ft. Tuesday afternoon, snow level 8,000 falling to 5,500 ft. late Tuesday night, 3,000 ft. Wednesday, then at the surface Wednesday night through Thursday night.
• lows 34-22 highs 63-32.
• Mostly cloudy and a bit warmer with snow and rain showers likely (70%) Friday and Saturday, a good (50%) chance of snow and rain showers both nights,
• Mostly cloudy and a bit warmer with snow and rain showers likely (70%) Sunday, a slight (20%) chance of  evening rain and snow showers, partly cloudy with a slight (20%) chance of rain and snow showers Sunday night,
• Then a mix of clouds and sun and a bit warmer with a (40%) chance of rain and snow showers Monday.
• snow level 2,000 ft. Friday, 3,000 ft. Friday night through Saturday night, 3,500 ft. Sunday and Sunday night, then 4,000 ft. Monday.
• highs 33-45 lows near 25.