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Tim Chuey Weather

by | Apr 18, 2023 | Weather

April 18, 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 WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 AM WEDNESDAY ABOVE 2,000 FT. FOR THE COAST RANGE OF NORTHWEST OREGON AND AND THE CENTRAL COAST RANGE OF OF WESTERN OREGON.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 AM WEDNESDAY ABOVE 4,000 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
  • A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 AM WEDNESDAY ABOVE 4,500 FT. FOR THE EAST SLOPES OF THE OREGON CASCADES.

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

An Upper Level Low Pressure Trough (“U” shape) is moving eastward and will push more frontal systems our way. The graphics for days 1-3 show a warm front just offshore Thursday. The graphics for days 3-7  Friday through next Tuesday show the continuing series of complex frontal systems that will slide into the Pacific Northwest through the period.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with evening showers likely (70%) and a slight (20%) chance of thunderstorms, showers with a slight (20%) chance of thunderstorms late tonight (0.25 in. of rain possible, more in storms),
  • Mostly cloudy and a bit cooler with showers and a slight (20%) chance of thunderstorms Wednesday (0.25 in. of rain possible, small hail possible,) a good (50%) chance of evening showers and a slight (20%) chance of thunderstorms, a good (50%) chance of rain late Wednesday night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit warmer with a good (50%) chance of rain Thursday afternoon (under 0.10 in. of rain possible) , evening rain likely (70%), a good (50%) chance of showers late at night (0.10 on. of rain possible),
  • Mostly cloudy with a (40%) chance of AM showers, a bit warmer with a slight (20%) chance of showers Friday afternoon, then a slight (20%) chance of showers Friday night.
  • lows 37-35 warming to 45 Friday night highs 50-62.
  • Mostly cloudy with a slight (20%) chance of AM showers, a good (50%) chance of showers and a bit warmer Saturday afternoon, evening showers likely (70%), a good (50%) chance of showers late Saturday night.
  • Mostly cloudy with showers likely (70%) and a bit cooler Sunday, a good (50%) chance of evening showers, a slight (20%) chance of showers at night,
  • Mostly cloudy with a (40%) chance of AM showers, a slight (20%) chance of showers Monday afternoon, partly cloudy with a slight (20%) chance of showers Monday night,
  • Then a mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Tuesday.
  • highs 66-57 warming to 59 Tuesday lows 49-38. (seasonal averages high 62 low 40)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with showers and snow showers likely (70%) and a slight (20%) chance of thunderstorms tonight (under 0.10 in. of rain possible, 1 in. of snow possible, snow level 2,500 ft. falling to 2,000 ft. late tonight),
  • Mostly cloudy with AM showers and snow showers with a slight (20%) chance of thunderstorms, showers likely (70%)  with a slight (20%) chance of thunderstorms Wednesday afternoon (0.10 in. of rain possible), a good (50%) chance of evening showers and snow showers and a slight (20%) of thunderstorms, a slight (20%) chance of rain and snow showers late Wednesday night (under 0.10 in. of rain possible, snow level 2,500 ft.),
  • Mostly cloudy with a (30%) chance of showers and a bit warmer Thursday (under 0.10 in. of rain possible, afternoon snow level 2,500 ft.), a (40%) chance of showers Thursday night (under 0.10 in. of rain possible),
  • Mostly cloudy with a slight (20%) chance of AM showers, mostly cloudy and a bit warmer Friday afternoon, then just partly cloudy Friday night.
  • lows 38-48 highs 52-64.
  • Mostly cloudy and a bit warmer with a slight (20%) chance of showers Saturday afternoon, a slight (20%) chance of showers Saturday night,
  • Mostly cloudy and cooler with a good (50%) chance of showers Sunday, a slight (20%) chance of showers at night,
  • Mostly cloudy start, partly cloudy and a bit warmer Monday afternoon, partly cloudy Monday night,
  • Then partly cloudy and a bit warmer Tuesday.
  • highs 68-60 warming to 62 Tuesday lows 52-42. (seasonal averages high 64 low 43)

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

  • Mostly cloudy with evening coastal showers likely (70%) and a slight (20%) chance of thunderstorms with coastal showers and a slight (20%) chance of thunderstorms late tonight while inland evening showers and a (40%) chance of thunderstorms inland showers and snow showers and a slight (20%) chance of thunderstorms late tonight (0.10 in. of rain possible, no snow accumulation expected, snow level 2,000 ft. late tonight),
  • Mostly cloudy with AM coastal showers and a slight (20%) chance of thunderstorms and coastal showers likely (70%) with a slight (20%) chance of thunderstorms and a bit warmer Wednesday afternoon while inland showers likely (70%) with a slight (20%) chance of thunderstorms and a bit warmer Wednesday afternoon (0.10 in. of rain possible), a slight (20%) chance of evening coastal thunderstorms and a good (50%) chance of coastal showers Wednesday night while a (40%) chance of evening inland showers and a slight (20%) chance of thunderstorms with a slight (20%) chance of inland showers late Wednesday night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit warmer with a (40%) chance of showers Thursday (under 0.10 in. of rain possible), a (40%) chance of showers at night (0.10 in. of rain possible),
  • Mostly cloudy with a slight (20%) chance of AM showers, just mostly cloudy and a bit warmer Friday afternoon, then mostly cloudy Friday night.
  • lows near 38-44 highs 52-60.
  • Mostly cloudy with a slight (20%) chance of showers Saturday, 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,
  • Partly cloudy and a bit warmer Monday, then partly cloudy Monday night and Tuesday.
  • highs 60-53 warming to 55 Tuesday lows 45-39. (seasonal averages high 57 low 44)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with evening snow showers and a slight (20%) chance of thunderstorms, snow showers likely (70%) late tonight (0.50 in. of rain possible, 2-4 in. of snow possible, snow level 2,000 ft.)
  • Mostly cloudy with snow showers and a slight (20%) chance of thunderstorms and a bit cooler Wednesday and in the evening (0.50 in. of rain possible, small hail possible, 2-5 in. of snow possible, snow level 2,000 ft.), a slight (20%) chance of snow showers late Wednesday night (0.25 in. of rain possible, 2 in. of snow possible, snow level 2,500 ft. falling to 1,500 ft. late Wednesday night),
  • Mostly cloudy with a slight (20%) chance of AM snow, a good (50%) chance of rain and snow and a bit warmer Thursday afternoon, evening rain and snow likely (70%), snow showers likely (70%) with a good (50%) chance of rain showers late at night,
  • Mostly cloud with a (40%) chance of AM rain and snow showers, a slight (20%) chance of  showers and a bit warmer Friday afternoon, then a slight (20%) chance of showers Friday night.
  • snow level 2,000 ft. tonight and Wednesday, 2,500 ft. falling to 1,500 ft. late Wednesday night, 2,000 ft.rising to 3,500 ft. Thursday afternoon, 4,500 ft. Thursday night, 6,000 ft. Friday, then 7,000 ft. Friday night.
  • lows 22-33 highs 32-46.
  • A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Saturday, becoming mostly cloudy with showers likely (70%) Saturday night,
  • Mostly cloudy and a bit cooler with showers likely (70%) Sunday, a good (50%) chance of rain and snow showers at night,
  • A mix of clouds and sun with a (40%) chance of AM snow showers and rain showers, a slight (20%) chance of snow showers and a bit cooler Monday afternoon, partly cloudy with a slight (20%) chance of rain and snow showers Monday night,
  • Partly cloudy with a slight (20%) chance of AM rain and snow showers, then a (30%) chance of rain and snow showers and a bit warmer Tuesday afternoon.
  • snow level 7,500 ft. Saturday and  Saturday night, 6,000 ft. Sunday, 4,500 ft. Sunday night, 4,000 ft. Monday, then 4,500 ft. Monday night and Tuesday.
  • highs 52-42 warming to 45 Tuesday lows  35-27.