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Tim Chuey Weather

by | May 22, 2023 | Weather

May 23, 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

  • NONE AT THIS TIME.

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 taking over, but the problem is that it will not be bringing rain with it, just cooler temperatures.  The graphics for days 1-3  show no frontal activity over the Pacific Northwest. The graphics for days 3-7  Friday through next Tuesday show what little frontal activity will occur through the period until a cold front move in between Friday and next Saturday.  Then another cold front slides in just in time for Memorial Day Monday.Yet another front will be offshore to out northwest next Tuesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Some AM clouds, mostly sunny and a bit warmer this afternoon, partly cloudy tonight,
  • AM clouds and sun, sunny and a bit warmer Wednesday afternoon, clear at night,
  • Sunny and warmer Thursday, then clear Thursday night.
  • highs 67-82 lows 44-52.
  • Mostly sunny Friday, partly cloudy Friday night,
  • A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Saturday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late at night,
  • A mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Sunday afternoon, partly cloudy Sunday night,
  • Then partly cloudy and a bit warmer with a slight (20%) chance of showers Monday afternoon (Memorial Day).
  • highs 82-72 warming to 74 Monday lows 52-48.  (seasonal averages high 69 low 45)

Forecast for the Umpqua Valley including Roseburg:

  • Sunny and a bit warmer today, partly cloudy tonight,
  • Some AM clouds, sunny and a bit warmer Wednesday afternoon, mostly clear at night,
  • Sunny and warmer Thursday, then clear Thursday night.
  • highs 72-84 lows 47-54.
  • Sunny Friday, mostly clear in the evening, partly cloudy Friday night,
  • Partly cloudy and cooler with a slight (20%) chance of thunderstorms Saturday and at night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Sunday, partly cloudy Sunday night,
  • Then partly cloudy and a bit warmer Monday (Memorial Day).
  • highs 84-75 warming to 77 Monday lows 54-52. (seasonal averages high 72 low 49)

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

  • Sunny and a bit warmer today, partly cloudy tonight,
  • Some AM clouds, sunny and a bit warmer Wednesday afternoon, mostly clear at night,
  • Sunny and warmer Thursday, then partly cloudy Thursday night.
  • highs 63-66 lows 46-49.
  • Partly cloudy and a bit cooler Friday, mostly cloudy Friday night,
  • Mostly cloudy and a bit cooler Saturday and at night,
  • Mostly cloudy Sunday, partly cloudy Sunday night,
  • Then partly cloudy and a bit warmer Monday (Memorial Day).
  • highs 65-63 warming back to 65 Monday lows near 49. (seasonal averages high 61 low 49)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly sunny and a bit warmer today, partly cloudy tonight,
  • Mostly sunny and a bit warmer Wednesday, mostly clear at night,
  • Sunny and a bit warmer Thursday, mostly clear Thursday night.
  • free air freezing level 8,000 ft. rising to 9,000 ft. this afternoon, 10,000 ft. tonight and Wednesday, 11,000 ft. Wednesday night, then 12,000 ft. Thursday and Thursday night.
  • highs 57-69 lows 34-42.
  • AM sun, partly cloudy and a bit warmer with a slight (20%) chance of showers and thunderstorms Friday afternoon, a slight (20%) chance of evening showers, just partly cloudy late Friday night,
  • Clouds and sun with a slight (20%) chance of AM showers, a bit cooler with a (30%) chance of showers and a slight (20%) chance of thunderstorms Saturday afternoon, a (30%) chance of evening showers, just partly cloudy late Saturday night,
  • AM clouds and sun with a slight (20%) chance of showers,  a mix of clouds and sun and a bit cooler with a (30%) chance of showers Sunday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
  • Then partly cloudy and a bit warmer with a slight (20%) chance of showers Monday (Memorial Day).
  • snow level above 8,000 ft. Friday night through Saturday night, then 8,000 ft. Sunday through Monday.
  • highs 67-60 warming to 62 Monday lows 44-38.
  • highs 67-52 lows 42-36.