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Tim Chuey Weather

by | Apr 11, 2023 | Weather

by Tim Chuey | Apr 10, 2023 | Weather

April 11, 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

  • A FREEZE WATCH IS IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY AND THE UPPER HOOD RIVER VALLEY.
  • A FLOOD WARNING IS IN EFFECT THROUGH WEDNESDAY MORNING FOR THE JOHN DAY RIVER AT SERVICE CREEK AFFECTING WHEELER COUNTY.
  • A FLOOD WARNING IS IN EFFECT THROUGH LATE TONIGHT FOR THE MALHEUR RIVER NEAR VALE.

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

Another  Upper Level Low Pressure Trough (“U” shape) is sending more moisture to the Pacific Northwest in the form of a weak Atmospheric River. The graphics for days 1-3 show the cold front that moved through the Pacific Northwest and the next one behind it.  The graphics for days 3-7  Friday through Tuesday show the continuing series of complex frontal systems that will slide into the Pacific Northwest through the period.

Note: Willamette Pass, Hoodoo, and Mt. Ashland  are still open for skiing. With the heavy snow pack the ski season is booming. Check their Web Sites for specific dates and times of operation.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with a good (50%) chance of evening showers,  rain and snow showers late tonight (0.25 in. of rain possible, no snow accumulation expected, snow level 1,500 ft.),
  • Mostly cloudy with AM showers and snow showers likely (70%), a bit cooler with showers likely (70%) Wednesday afternoon (under 0.10 in. of rain possible, no snow accumulation expected, snow level 1,000 ft.), partly cloudy with widespread frost late Wednesday night,
  • Mostly cloudy with areas of AM frost, mostly cloudy and a bit warmer Thursday afternoon, partly cloudy with a slight (20%) chance of evening showers, partly cloudy with areas of frost late at night,
  • Clouds and sun with AM frost, a mix of clouds and sun and a bit warmer Friday, partly cloudy in the evening, then mostly cloudy late Friday night.
  • lows 35-32 warming to 39 Friday night highs 49-59.
  • Mostly cloudy and a bit warmer with a slight (20%) chance of showers Saturday, becoming mostly cloudy with a slight (20%) chance of rain Saturday night,
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday, becoming mostly cloudy with showers likely (70%) at night,
  • Mostly cloudy and cooler with showers likely (70%) Monday, a good (50%) chance of evening showers, partly cloudy with a good (50%) chance of rain showers and snow showers late Monday night,
  • Clouds and sun with a good (50%) chance of AM snow showers, then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Tuesday afternoon.
  • highs 62-52 lows 42-36. (seasonal averages high 60 low 40)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a slight (20%) chance of late evening rain and snow showers, rain and snow showers late tonight (under 0.10 in. of rain possible, 1-2 in. of snow possible, snow level 2,000 ft.)
  • Mostly cloudy and a bit cooler with rain and snow showers likely (70%) Wednesday (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 2,000 ft. rising to 2,500 ft. in the afternoon,  just partly cloudy Wednesday night,
  • Mostly cloudy and a bit warmer Thursday, mostly cloudy at night,
  • Then mostly cloudy and a bit warmer Friday and Friday night.
  • lows 36-34 warming to 42 Friday night highs 50-62.
  • Mostly cloudy and a bit warmer Saturday, mostly cloudy with a slight (20%) chance of showers Saturday night,
  • Mostly cloudy and a bit cooler with a (40%) chance of showers Sunday, showers likely (70%) at night,
  • Mostly cloudy with AM showers, showers likely (70%) and cooler Monday afternoon and evening, a good (50%) chance of rain and snow showers late Monday night,
  • Mostly cloudy with AM rain and snow showers likely (70%), then a good (50%) chance of showers and a bit cooler Tuesday afternoon.
  • highs 64-53 lows 43-38. (seasonal averages high 62 low 42)

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

  • Partly cloudy with a good (50%) chance of late evening coastal showers and mostly cloudy with coastal showers late tonight while partly cloudy inland showers this evening and mostly cloudy with a good (50%) chance of late evening rain and snow showers, showers late tonight (0.10 in. of rain possible, snow level 2,000 ft.),
  • Mostly cloudy with AM coastal showers likely (70%) and a good (50%) chance of coastal showers Wednesday afternoon while inland showers likely (70%) Wednesday afternoon (under 0.10 in. of rain possible, snow level 2,000 ft.), partly cloudy in the evening, mostly clear late Wednesday night,
  • Mostly cloudy and a bit warmer Thursday, mostly cloudy Thursday night,
  • Then mostly cloudy and a bit warmer Friday and Friday night.
  • lows 37-34 warming to 39 Friday night highs 50-55.
  • Mostly cloudy and a bit warmer Saturday and Saturday night,
  • Mostly cloudy and a bit warmer with a good (50%) chance of showers Sunday, showers likely (70%) at night,
  • Mostly cloudy with showers likely (70%) and a bit cooler Monday, showers Monday night,
  • Then mostly cloudy with showers Tuesday.
  • highs 57-52 lows 42-37. (seasonal averages high 56 low 44)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with a good (50%) chance of evening snow showers with a slight (20%) chance of thunderstorms, snow showers late tonight (1-3 in. of snow possible),
  • Mostly cloudy with AM snow showers, snow showers likely (70%) with a (30%) chance of thunderstorms and a bit cooler Wednesday afternoon (0.25 in. of rain possible, 1-2 n. of snow possible), becoming partly cloudy with widespread frost late Wednesday night,
  • Clouds and sun with widespread AM frost, a mix of clouds and sun and a bit warmer Thursday afternoon, partly cloudy with a slight (20%) chance of evening snow showers, partly cloudy with patchy frost late Thursday night,
  • Partly cloudy with widespread AM frost, partly cloudy and a bit warmer Friday afternoon, then partly cloudy Friday night.
  • snow level 2,500 ft. falling to 1,500 ft. late tonight, at the surface Wednesday, 1,500 ft. Wednesday night, free air freezing level at the surface rising to 4,000 ft. Thursday afternoon, snow level 2,500 ft. Thursday night, free air freezing level 4,500 ft. Friday, then 6,000 ft. Friday night.
  • lows 20-27 highs 28-42.
  • A mix of clouds and sun and a bit warmer Saturday, mostly cloudy with a slight (20%) chance of showers and snow showers late Saturday night,
  • Mostly cloudy with AM snow showers, a (50%) chance of showers  Sunday afternoon, rain and snow showers at night,
  • Mostly cloudy with snow and rain showers and colder Monday, evening snow and rain showers, a good (50%) chance of snow showers late Monday night,
  • AM snow showers likely (70%), a bit cooler with rain showers likely (70%) Tuesday afternoon.
  • free air freezing level 7,000 ft. Saturday, snow level 5,500 ft. Saturday night, 5,000 ft. Sunday, 4,000 ft. Sunday night,  3,000 ft. Monday, then 2,500 ft. Monday night and Tuesday.
  • highs 48-35 lows 32-22.