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June 15, 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)  will keep temperatures at or a bit above normal. The graphics for days 1-3  show a cold front moving into the Pacific Northwest Friday. The graphics for days 3-7   Sunday through Thursday show a frontal system that moved through the Pacific Northwest Saturday.

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)  will keep temperatures at or a bit above normal. The graphics for days 1-3  show a dry cold front pushing through the Pacific Northwest today. The graphics for days 3-7   Friday through Tuesday show a frontal system moving through the Pacific Northwest Saturday into Sunday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Some AM clouds, sunny and a bit warmer this afternoon, partly cloudy tonight,
  • AM sun, partly cloudy and warmer Friday, partly cloudy at night,
  • A mix of clouds and sun and cooler Saturday, then partly cloudy Saturday night.
  • highs 73-82 cooling to 72 Saturday low 47-53 cooling to 46 Saturday night.
  • Partly cloudy with a (30%) chance of AM showers, mostly cloudy and a bit cooler with showers likely (70%) Sunday afternoon (Father’s Day), a good (50%) chance of showers Sunday night,
  • Mostly cloudy with a good (50%) chance of AM showers, showers likely (70%) and a bit cooler Monday afternoon (Juneteenth), a good (50%) chance of evening showers, partly cloudy with a good (50%) chance of showers late at night,
  • A mix of clouds and sun and a bit warmer with a good (50%) chance of showers Tuesday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Tuesday night,
  • Then partly cloudy and a bit warmer Wednesday (Summer Solstice 7:57 am).
  • highs 62-72 lows near 46.  (seasonal averages high 74 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • AM clouds, sunny and a bit warmer this afternoon, mostly clear this evening, partly cloudy late tonight,
  • Sunny and warmer Friday, partly cloudy in the evening, mostly cloudy late at night,
  • Partly cloudy and cooler Saturday, then partly cloudy Saturday night.
  • highs 78-86 cooling to 73 Saturday low 53-57 cooling back to 53 Saturday night.
  • Partly cloudy start, mostly cloudy and cooler with a slight (20%) chance of showers Sunday afternoon (Father’s Day), a slight (20%) chance of showers Sunday night,
  • Mostly cloudy and a bit cooler with showers likely (70%) Monday (Juneteenth), a good (50%) chance of evening showers, partly cloudy with a (40%) chance of showers late at night,
  • Mostly cloudy with a slight (20%) chance of showers and warmer Tuesday, partly cloudy Tuesday night,
  • Some AM clouds, then sunny and a bit warmer Wednesday afternoon (Summer Solstice 7:57 am).
  • highs 64-62 warming to 77 Wednesday lows 49-52.  (seasonal averages high 76 low 52)

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

  • Sunny and a bit warmer today, partly cloudy tonight,
  • AM coastal clouds and partly cloudy and a bit warmer Friday afternoon while AM inland sun and partly cloudy in the afternoon, mostly cloudy at night,
  • Mostly cloudy and a bit cooler Saturday, then mostly cloudy Saturday night.
  • highs 65-69 cooling back to 65 Saturday lows 48-52 cooling to 50 Saturday night.
  • Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday (Father’s Day), a good (50%) chance of showers Sunday night,
  • Mostly cloudy and a bit warmer with showers likely (70%) Monday (Juneteenth), a (30%) chance of showers at night,
  • Mostly cloudy with a slight (20%) chance of showers Tuesday, partly cloudy Tuesday night,
  • Then partly cloudy and a bit warmer Wednesday (Summer Solstice 7:57 am).
  • highs 62-66 lows 47-49. (seasonal averages high 63 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly sunny and a bit warmer today and Friday, partly cloudy both nights,
  • A mix of clouds and sun with a slight (20%) chance of rain and a bit cooler Saturday, then mostly cloudy with a slight (20%) chance of rain Saturday night.
  • free air freezing level 12,000 ft. today, 13,000 ft. tonight, 14,000 ft. Friday, 13,000 ft. Friday night, snow level above 8,000 ft. Saturday, then 7,000 ft. Saturday night.
  • highs 63-72 cooling back to 63 Saturday lows 43-35.
  • Clouds and sun with a slight (20%) chance of AM rain and snow showers, a mix of clouds and sun and much cooler with a good (50%) chance of showers Sunday afternoon (Father’s Day), mostly cloudy with evening showers likely (70%), a good (50%) chance of rain and snow showers late Sunday night,
  • Mostly cloudy with AM rain and snow showers likely (70%), a bit cooler with showers Monday afternoon, evening showers likely (70%), a (50%) chance of rain and snow showers late at night,
  • Mostly cloudy with a good (50%) chance of AM rain and snow showers, showers likely (70%) and a bit warmer Tuesday afternoon, partly cloudy with a good (50%) chance of evening showers, just partly cloudy Tuesday night,
  • Then partly cloudy and warmer Wednesday (Summer Solstice 7:57 am).
  • snow level 5,500 ft. Sunday through Monday, 5,500 ft. Monday night and Tuesday, 6,500 ft. Tuesday night, then free air freezing level 9,000 ft. Wednesday.
  • highs 49-42 warning to 58 Wednesday lows near 32.