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April 15, 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 AND NORTH CENTRAL OREGON.
  • A WIND ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE LOWER COLUMBIA BASIN OF OREGON.
  • A WIND ADVISORY IS IN EFFECT FROM 5 AM UNTIL 11 PM TODAY FOR THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON AND THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON.
  • A WIND ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE EASTERN COLUMBIA GORGE OF OREGON AND NORTH CENTRAL OREGON.
  • A FLOOD WARNING IS IN EFFECT UNTIL EARLY FRIDAY APRIL 19 TH FOR THE OWYHEE RIVER BELOW THE OWYHEE DAM AFFECTING MALHEUR COUNTY.

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  brings the Pacific Northwest more sunshine.  The graphics for days 1-3  show a cold front sliding into Oregon Monday with little or no effect on our weather. The graphics for days 3-7     Wednesday through Sunday show a frontal system offshore next Saturday moving across the Pacific Northwest between Saturday night and next Sunday.  A cold front will be offshore next Monday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy start, a mix of clouds and sun and a bit cooler this afternoon, mostly cloudy this evening, partly cloudy late tonight,
  • Mostly sunny and a bit warmer Tuesday, partly cloudy in the evening, mostly clear late at night,
  • Sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
  • highs 57-63 lows 37-34 warming back to 37 Wednesday night.
  • Sunny and a bit warmer Thursday, mostly clear Thursday night,
  • Sunny and a bit warmer Friday, partly cloudy at night,
  • A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Saturday, mostly cloudy with a slight (20%) chance of evening rain, partly cloudy with a slight (20%) chance of rain late Saturday night,
  • Then mostly sunny and a bit cooler with a slight (20%) chance of rain Sunday.
  • highs 70-73 cooling to 66 Sunday lows 40-43. (seasonal averages high 61 low 40)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with patchy AM fog, partly cloudy and slightly warmer this afternoon and evening, mostly cloudy late tonight,
  • AM clouds and patchy fog, partly cloudy and a bit warmer Tuesday afternoon and evening, mostly clear late at night,
  • Areas of AM frost, sunny and warmer Wednesday afternoon, then mostly clear late Wednesday night.
  • highs 59-65 lows 40-37 warming back to 40 Wednesday night.
  • Mostly sunny and warmer Thursday, partly cloudy in the evening, mostly clear Thursday night,
  • Sunny and a bit warmer Friday, partly cloudy with a slight (20%) chance of rain late at night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of rain Saturday and Saturday night,
  • Then partly cloudy and a bit cooler with a slight (20%) chance of rain Sunday.
  • highs 73-76 cooling to 69 Sunday lows 44-46 cooling back to 44 Saturday night. (seasonal averages high 63 low 42)

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

  • Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer this afternoon and evening, mostly cloudy with patchy fog late tonight,
  • AM clouds with patchy fog, partly cloudy Tuesday afternoon and evening, clear late at night,
  • Some AM clouds, sunny and a bit warmer Wednesday afternoon, then mostly clear Wednesday night.
  • highs 56-60 lows 38 warming to 42.
  • Partly cloudy and a bit warmer Thursday, partly cloudy Thursday night,
  • Partly cloudy and a bit warmer Friday, partly cloudy with a slight (20%) chance of rain late at night,
  • Mostly cloudy and a bit cooler with a slight (20%) chance of rain Saturday, a slight (20%) chance of rain Saturday night,
  • Mostly cloudy with a slight (20%) chance of AM rain, then partly cloudy Sunday afternoon.
  • highs 66-60 lows 43-45 cooling back to 43 Saturday night. (seasonal average high 57 low 44)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with a slight (20%) chance of AM snow showers, a mix of clouds and sun and a bit cooler this afternoon, mostly cloudy with a slight (20%) chance of evening rain and snow showers, just mostly cloudy late tonight,
  • A mix of clouds and sun and a bit warmer Tuesday, partly cloudy in the evening, clear late at night,
  • Sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
  • snow level 3,500 ft. today, 4,500 ft. this evening, free air freezing level 4,000 ft. rising to 5,000 ft. Tuesday afternoon, 5,000 ft. falling to 3,500 ft. late Tuesday night, 5,500 ft. Wednesday, then 7,000 ft. Wednesday night.
  • highs 43-50 lows 28-24 warming to 29 Wednesday night.
  • Sunny and a bit warmer Thursday, mostly clear Thursday night,
  • Sunny and a bit warmer Friday, partly cloudy at night,
  • A mix of clouds and sun and a bit cooler with a (30%) chance of rain and snow Saturday, mostly cloudy with a slight (20%) chance of rain and snow Saturday night,
  • Then mostly sunny and a bit cooler with a slight (20%) chance of rain and snow Sunday.
  • free air freezing level 8,000 ft. Thursday, 9,000 ft. Thursday night through Friday night, then snow level 6,500 ft. Saturday through Sunday.
  • highs 57-59 cooling to 55 Sunday lows 32-35.