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June 8, 2022

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.
  • 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

  • Upper Level High Pressure keeps us in sunshine for yet another day.  The graphics for days 1-3 show the complex frontal system that will be offshore Thursday. The graphics for days 3-7   Friday through Tuesday show the frontal activity approaching the Pacific Northwest Friday through Sunday. There will be a frontal system off shore next Wednesday.

Forecast for the South Willamette Valley including Eugene-Springfield:

  • Mostly cloudy with possible sun breaks and a bit warmer today, mostly cloudy and this evening, partly cloudy late tonight,
  • A mix of clouds and sun and a bit warmer Thursday, increasing clouds with a good (50%) chance of evening rain, mostly cloudy with rain likely (70%) late at night (under 0.10 in. of rain possible),
  • Mostly cloudy with AM showers likely (70%), a bit cooler with a good (50%) chance of showers Friday afternoon, evening showers likely (70%), rain likely (70%) late Friday night.
  • highs 74-80 cooling to 77 Friday lows 50-62 cooling to 60 Friday night.
  • Mostly cloudy with rain likely (70%) and a bit cooler Saturday, showers likely (70%) Saturday night,
  • Mostly cloudy with a good (50%) chance of AM showers, partly cloudy and a bit warmer with a good (50%) chance of showers Sunday afternoon, partly cloudy with a (30%) chance of evening showers, a slight (20%) chance of showers late Sunday night,
  • A mix of clouds and sun with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Monday night,
  • Then mostly sunny and a bit warmer with a slight (20%) chance of showers Tuesday.
  • highs 72-68 warming back to 72 Tuesday lows 53-46. (Seasonal Averages high 72 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy and a bit warmer today and this evening, partly cloudy late tonight,
  • Partly cloudy and warmer Thursday, mostly cloudy with a (30%) chance of showers at night,
  • Mostly cloudy and a bit cooler with a (30%) chance of showers Friday, then a (40%) chance of showers Friday night.
  • highs 75-84 cooling to 82 Friday lows 53-62.
  • Mostly cloudy with showers likely (70%) and a bit cooler Saturday, showers likely (70%) Saturday night,
  • A (40%) chance of AM showers, a (40%) chance of showers with a slight (20%) chance of thunderstorms and a bit cooler Sunday afternoon, partly cloudy with a slight (20%) chance of showers at night,
  • Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit warmer with a slight (20%) chance of showers Monday afternoon, becoming mostly clear Monday night,
  • Then partly cloudy and a bit warmer with a slight (20%) chance of showers  Tuesday afternoon.
  • highs 74-67 warming to 73 Tuesday lows 55-48. (Seasonal Averages high 75 low 51).

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

  • Mostly cloudy and a bit warmer today and this evening, partly cloudy late tonight,
  • Mostly cloudy and a bit warmer Thursday, a (30%) chance of showers at night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with a (40%) chance of showers Friday, a good (50%) chance of evening showers, then showers likely (70%) late Friday night.
  • highs 67-72 cooling to 70 Friday lows 49-57 cooling to 55 Friday night.
  • Mostly cloudy and a bit cooler with showers likely (70%) Saturday and in the evening, a good (50%) chance of showers late Saturday night,
  • Mostly cloudy with a (40%) chance of showers and a bit cooler Sunday, partly cloudy with a slight (20%) chance of showers at night,
  • Partly cloudy with a slight (20%) chance of showers and a bit warmer Monday, mostly clear in the evening, partly cloudy late Monday night,
  • Then partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday.
  • highs 66-63 warming back to 66 Tuesday lows 52-47. (Seasonal Averages high 63 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy and a bit warmer today and this evening, partly cloudy late tonight,
  • Mostly sunny and a bit warmer Thursday, becoming mostly cloudy with a good (50%) chance of showers late at night,
  • Mostly cloudy with a good (50%) chance of AM showers, partly cloudy and a bit cooler with a good (50%) chance of showers Friday afternoon and evening, then rain likely (70%) late Friday night.
  • free air freezing level 12,000 ft. falling to 11,000 ft. this afternoon, 12,000 ft. rising to 13,000 ft. late tonight, 13,000 ft. Thursday, snow level above 8,000 ft. Thursday night through Friday night.
  • highs 62-68 cooling to 66 Friday lows 43-48.
  • Mostly cloudy and a bit cooler with rain Saturday, showers likely (70%) Saturday night,
  • Mostly cloudy with AM showers likely (70%), a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday afternoon, a (30%) chance of evening showers, just mostly cloudy late at night,
  • Mostly sunny with a slight (20%) chance of showers Monday, partly cloudy Monday night,
  • Then mostly sunny and a bit warmer with a slight (20%) chance of showers Tuesday afternoon.
  • snow level above 8,000 ft. Saturday and Saturday night, 6,500 ft. Sunday and Sunday night, 7,000 ft. Sunday evening, 5,000 ft. rising to 6,000 ft. Monday afternoon, free air freezing level 8,000 ft. Monday night, then snow level 7,500 ft. Tuesday.
  • highs 59-52 warming back t0 59 Tuesday lows 42-35.