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June 7, 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 HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE  RIVER.

THE WEATHER PATTERN

An Upper Level High Pressure Ridge (“Arch” shape) is moving closer to the Pacific coast and will warm us up into next week.. The graphics for days 1-3  show no frontal systems approaching the Pacific Northwest. The graphics for days 3-7   Friday through Tuesday show a frontal system just to our northwest Friday then moving through Oregon Saturday into Sunday with a front to our northwest Tuesday then pushing through the Pacific Northwest next Wednesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy tonight,
  • A mix of clouds and sun and a bit warmer Thursday, partly cloudy Thursday night,
  • A mix of clouds and sun and a bit cooler Friday, partly cloudy at night,
  • Partly cloudy and a bit warmer Saturday, then mostly clear Saturday night.
  • low 50-52 cooling to 49 Friday night and Saturday night highs 78-76 warming to 79 Saturday.
  • Mostly sunny and a bit warmer Sunday, clear Sunday night,
  • Mostly sunny Monday, mostly clear at night,
  • Some AM clouds, sunny and a bit cooler Tuesday afternoon, mostly clear Tuesday night,
  • Then mostly sunny and a bit cooler Wednesday.
  • highs 83-76 lows 49-52 cooling to 47 Tuesday night.  (seasonal averages high 72 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Partly cloudy with a slight (20%) chance of isolated thunderstorms tonight (gusty winds, small hail, and heavy rain possible),
  • Mostly cloudy start, partly cloudy and slightly cooler with a slight (20%) chance of isolated thunderstorms Thursday afternoon (gusty winds, small hail, and heavy rain possible), a slight (20%) chance of isolated thunderstorms Thursday night (gusty winds, small hail, and heavy rain possible),
  • Mostly cloudy and a bit cooler Friday, partly cloudy at  night,
  • Partly cloudy and a bit warmer Saturday, then partly cloudy Saturday night.
  • lows 55-53 highs 80-77.
  • Some AM clouds, sunny and a bit warmer Sunday afternoon, clear Sunday night,
  • Mostly sunny and a bit warmer Monday afternoon, mostly clear at night,
  • Some AM clouds, sunny and a bit cooler Tuesday afternoon, mostly clear Tuesday night,
  • Then mostly sunny Wednesday.
  • highs 85-87 cooling to 82 Tuesday and Wednesday lows 54-56 cooling to 52 Tuesday night. (seasonal averages high 75 low 51)

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

  • Partly cloudy this evening, mostly cloudy late tonight,
  • Mostly cloudy start, partly cloudy Thursday afternoon, mostly cloudy Thursday night,
  • Mostly cloudy Friday and at night,
  • Partly cloudy Saturday, then partly cloudy Saturday night.
  • lows near 49 highs near 65.
  • Some AM clouds, sunny Sunday afternoon, mostly clear Sunday night,
  • Partly cloudy Monday and at night,
  • Partly cloudy and a bit cooler Tuesday, mostly clear in the evening, partly cloudy late Tuesday night,
  • Then sunny Wednesday.
  • highs 65-67 cooling back to 65 Tuesday lows 48-50. (seasonal averages high 63 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy with a slight (20%) chance of evening showers and a (40%) chance of thunderstorms, just partly cloudy late tonight (0.10 in. of rain possible, more in storms),
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Thursday afternoon and evening (0.10 in. of rain possible, more in storms), mostly cloudy with a slight (20%) chance of showers late Thursday night (0.10 in. of rain possible),
  • Clouds and sun with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit cooler with a (40%) chance of showers and a slight (20%) chance of thunderstorms Friday afternoon, mostly cloudy with a slight (20%) chance of evening showers, just partly cloudy late at night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday afternoon, then just partly cloudy Saturday night.
  • free air freezing level 12,000 ft. late tonight, snow level above 8,000 ft. Thursday through Saturday, then free air freezing level 12,000 ft. Saturday night.
  • lows 46-42 highs 68-63 warming to 67 Saturday.
  • Mostly sunny and a bit warmer Sunday, mostly clear Sunday night,
  • Mostly sunny and a bit warmer Monday with a slight (20%) chance of afternoon and evening showers, just mostly clear late Monday night,
  • Then mostly sunny and a bit cooler Tuesday and Wednesday, mostly clear Tuesday night,
  • free air freezing level 12,000 ft. Sunday, 13,000 ft. Sunday night, snow level above 8,000 ft. Monday and Monday night, free air freezing level 14,000 ft. Tuesday, 15,000 ft. Tuesday night, then 14,000 ft. Wednesday.
  • highs 72-65 lows 44-40.