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June 11, 2024

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 WIND ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON.

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) starts heating us up. The graphics for days 1-3  show a weak cold front moved through the Pacific Northwest today. The graphics for days 3-7   Friday through Tuesday show a cold front that will be pushing through the Pacific Northwest between Friday and Saturday and a cold front off the Northern California coast next Tuesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly clear tonight,
  • Sunny Wednesday, clear Wednesday night,
  • Sunny and a bit warmer Thursday, mostly clear in the evening, partly cloudy late at night,
  • Mostly sunny and a bit cooler Friday, partly cloudy in the evening, then mostly cloudy late Friday night.
  • lows 45-48 highs 74-78 cooling back to 74 Friday.
  • A mix of clouds and sun and a bit cooler with a (40%) chance of showers Saturday, mostly cloudy Saturday night,
  • Mostly sunny with a slight (20%) chance of rain Sunday (Father’s Day), mostly cloudy with a slight (20%) chance of rain at night,
  • A mix of clouds and sun with a slight (20%) chance of showers and a bit warmer Monday, mostly cloudy with a slight (20%) chance of showers Monday night,
  • Mostly cloudy with a slight (20%) chance of AM showers, then a mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Tuesday afternoon.
  • highs 68-74 lows 44-49.  (seasonal averages high 73 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear tonight,
  • Sunny and a bit cooler Wednesday, clear Wednesday night,
  • Sunny and a bit warmer Thursday, mostly clear at night,
  • Partly cloudy and a bit cooler Friday, then partly cloudy with patchy fog late Friday night.
  • lows 50-48 warming to 52 Friday highs 78-80 cooling to 76 Friday.
  • Mostly cloudy with patchy AM fog and a slight (20%) chance of showers, partly cloudy and a bit cooler with a slight (20%) chance of showers Saturday afternoon, partly cloudy with patchy fog late Saturday night,
  • Partly cloudy with patchy AM fog, partly cloudy and a bit warmer with a slight (20%) chance of showers Sunday afternoon (Father’s Day) and at night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Monday, partly cloudy with a slight (20%) chance of showers Monday night,
  • Mostly cloudy with a slight (20%) chance of of AM showers, then partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday afternoon.
  •  highs 70-76 lows 48-53. (seasonal average high 75 low 52)

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

  • Partly cloudy this evening, mostly clear late tonight,
  • Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
  • Sunny and a bit cooler Thursday, partly cloudy at night with patchy coastal fog late,
  • Patchy AM fog, partly cloudy Friday afternoon and evening, then mostly cloudy with areas of fog late Friday night,
  • lows 45-48 highs 67-65.
  • Patchy AM and late night fog, mostly cloudy with a slight (20%) chance of AM showers, partly cloudy and a bit cooler Saturday afternoon, partly cloudy at night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Sunday afternoon (Father’s Day), partly cloudy with a slight (20%) chance of showers Sunday night,
  • Partly cloudy with a slight (20%) chance of showers Monday, a slight (20%) chance of showers Monday night,
  • Then mostly cloudy and a bit warmer with a slight chance of showers Tuesday.
  • highs 64-66 lows 45-49. (seasonal average high 63 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy this evening, mostly cloudy late tonight,
  • Sunny and a bit cooler Wednesday, clear Wednesday night,
  • Sunny and a bit warmer Thursday, mostly clear in the evening, partly cloudy late at night,
  • Mostly sunny and cooler Friday, then mostly cloudy with a slight (20%) chance of showers Friday night.
  •  free air freezing level 14,000 ft. tonight through Thursday, 13,000 ft. falling to 12,000 ft. late Thursday night, 11,000 ft. Friday, then snow level 6,500 ft. Friday night.
  • lows 40-42 cooling to 40 Wednesday night highs 67-72 cooling to 62 Thursday.
  • Mostly cloudy with a (50%) chance of AM showers, a mix of clouds and sun and cooler with a good (50%) chance of showers Saturday afternoon, mostly cloudy with a slight (20%) chance of showers Saturday night,
  • A mix of clouds and sun with a (40%) chance of showers and a slight (20%) chance of snow Sunday, mostly cloudy with a (40%) chance of showers and a slight (20%) chance of snow showers and a bit warmer Sunday afternoon (Father’s Day), mostly cloudy with a (40%) chance of rain at night,
  • A mix of clouds and sun with a (30%) chance of showers and a bit warmer Monday, mostly cloudy with a slight (20%) chance of showers Monday night,
  • Mostly cloudy with a (40%) chance of AM showers, then partly cloudy and a bit warmer with a (40%) chance of showers Tuesday afternoon.
  • snow level 5,500 ft. Saturday through Sunday, 6,500 ft. Sunday night and Monday, then 7,500 ft. Monday night and Tuesday.
  • highs 60-54 warming to 62 Monday lows 37-34 warming back to 37 Monday.