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Tim Chuey Weather

by | Apr 12, 2023 | Weather

April 13, 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 FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM TODAY FOR CENTRAL DOUGLAS COUNTY.
  • A FREEZE WARNING IS IN EFFECT FROM 2 AM UNTIL 8 AM TODAY FOR CENTRAL DOUGLAS COUNTY AND JACKSON COUNTY.
  • A FROST ADVISORY IS IN EFFECT UNTIL 10 AM TODAY 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 GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY AND THE UPPER HOOD RIVER VALLEY.
  • A FROST ADVISORY IS IN EFFECT FROM 2 AM UNTIL 8 AM TODAY FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
  • A FLOOD WARNING HAS BEEN EXTENDED FOR THE MALHEUR RIVER NEAR VALE AFFECTING MALHEUR COUNTY.

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  Sunday through Thursday 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 widespread AM frost, mostly cloudy, more sun breaks, and a bit warmer this afternoon, mostly cloudy this evening, partly cloudy with patchy frost late tonight,
  • A mix of clouds and sun, a bit warmer  Friday, partly cloudy Friday night,
  • Mostly cloudy and a bit warmer Saturday, then mostly cloudy with a slight (20%) chance of rain Saturday night.
  • highs 53-62 lows 34-42.
  • Mostly cloudy with a slight (20%) chance of  AM rain, a bit cooler with a good (50%) chance of showers Sunday afternoon, rain likely (70%) Sunday night,
  • Mostly cloudy and cooler with showers Monday, evening showers likely (70%), a good (50%) chance of showers late at night,
  • Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Tuesday afternoon, a (30%) chance of showers late Tuesday night,
  • Then a mix of clouds and sun with a good (50%) chance of showers and a bit warmer Wednesday.
  • highs 60-50 warming 55 Wednesday lows 40-36. (seasonal averages high 61 low 40)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with areas of AM frost, mostly cloudy and a bit warmer this afternoon, partly cloudy tonight,
  • Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, mostly cloudy at night,
  • Mostly cloudy and a bit warmer Saturday, then mostly cloudy Saturday night.
  • highs 55-64 lows 37-43.
  • Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Sunday afternoon, evening showers, showers likely (70%) late Sunday night,
  • Mostly cloudy with AM rain and snow showers, showers and much cooler Monday afternoon, evening rain and snow showers, rain and snow showers likely (70%) late at night,
  • Mostly cloudy with rain and snow showers likely (70%) and a bit warmer Tuesday, a (30%) chance of rain and snow showers Tuesday night,
  • Mostly cloudy with a (40%) chance of AM rain and snow showers, then showers and a bit warmer Wednesday afternoon.
  • highs 63-52 warming to 56 Wednesday lows 42-37. (seasonal averages high 62 low 42)

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

  • Mostly cloudy with areas of AM frost, mostly cloudy and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy late tonight,
  • Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy in the evening, mostly cloudy late at night,
  • Then mostly cloudy and a bit warmer Saturday and Saturday night.
  • highs 53-57 lows 37-42.
  • Mostly cloudy with showers likely (70%) Sunday and Sunday night,
  • Mostly cloudy with showers and a bit cooler Monday, showers likely (70%) at night,
  • Mostly cloudy with AM rain and snow showers likely (70%),  showers likely (70%) Tuesday afternoon, a (40%) chance of showers Tuesday night,
  • Then mostly cloudy and a bit warmer with a (40%) chance of showers Wednesday.
  • highs 57-52 warming to 54 Wednesday lows 39-37. (seasonal averages high 56 low 44)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • A mix of clouds and sun and a bit warmer this afternoon, partly cloudy with a slight (20%) chance of evening snow showers, partly cloudy with widespread frost late tonight,
  • Partly cloudy and warmer Friday, partly cloudy Friday night,
  • A mix of clouds and sun and a bit warmer Saturday, mostly cloudy in the evening, then partly cloudy late Saturday night.
  • free air freezing level at the surface rising to 4,000 ft. this afternoon, snow level 2,500 ft. tonight, free air freezing level at the surface rising to 5,000 ft. Friday afternoon, 6,000 ft. falling to 5,500 ft. late Friday night, 7,500 ft. Saturday, then 8,000 ft. Saturday night.
  • highs 34-48 lows 17-32.
  • Clouds and sun with a slight (20%) chance of AM rain, a good (50%) chance of rain Sunday afternoon and evening, rain and snow likely (70%) late Sunday night,
  • Mostly cloudy with rain and snow showers and colder Monday and in the evening, a good (50%) chance of rain and snow showers late at night,
  • Mostly cloudy with AM snow showers, a bit cooler with rain showers and snow showers likely (70%) Tuesday afternoon, a good (50%) chance of evening rain and snow showers, partly cloudy with a good (50%) chance of rain and snow showers Tuesday night,
  • A mix of clouds and sun with a good (50%) chance of rain and snow showers and a bit warmer Wednesday afternoon.
  • snow level 5,500 ft. Sunday, 4,000 ft. Sunday night, 3,000 ft. Monday, 2,500 ft. Monday night and Tuesday, 3,000 ft. Tuesday night, then 3,500 ft. Wednesday.
  • highs 48-35 warming to 40 Wednesday lows 27-22.