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July 10, 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

  • A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM TODAY FOR LOW RELATIVE HUMIDITY AND WINDY CONDITIONS FOR THE LOWER COLUMBIA BASIN OF OREGON.

HEALTH ADVISORIES

  • A RECREATIONAL USE HEALTH ADVISORY IS IN EFFECT FOR GALESVILLE RESERVOIR IN DOUGLAS COUNTY DUE TO THE PRESENCE OF A CYANOBACTERIA BLOOM. PEOPLE SHOULD AVOID SWIMMING AND HIGH SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE RESERVOIR WHERE BLOOMS ARE, AS THE MAJOR ROUTE OF EXPOSURE IS INGESTION OF WATER. TOXINS ARE NOT ABSORBED THROUGH THE SKIN, HOWEVER, THOSE WITH SKIN SENSITIVITIES MAY GET A PUFFY RED RASH. THE OREGON HEALTH AUTHORITY ENCOURAGES PEOPLE TO VISIT THE GALESVILLE RESERVOIR AND ENJOY ACTIVITIES SUCH AS FISHING, CAMPING, HIKING, BILKING, PICNICKING, BIRD WATCHING, CANOEING, AND KAYAKING. BOATING IS SAFE AS LONG AS SPEEDS DO NOT CREATE EXCESSIVE WATER SPRAY.. SPRAYS COULD LEAD TO THE RISK OF INHALING CYANOTOXINS.
  • 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 Low Pressure Trough (“U” shape offshore) will be moving through the Pacific Northwest. The graphics for days 1-3  show no frontal systems approaching the coast. The graphics for days 3-7   Thursday through Monday show a cold front well to the Northwest Friday and Saturday, then falling apart as it approaches the coast Sunday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy tonight,
  • Some AM clouds, sunny and a bit warmer Tuesday afternoon, mostly clear Tuesday night,
  • Some AM clouds, mostly sunny and a bit warmer Wednesday afternoon, mostly clear at night,
  • Sunny and a bit warmer Thursday, then clear Thursday night.
  • lows 50-54 highs 82-87.
  • Sunny and a bit warmer Friday and Saturday, clear both nights,
  • Mostly sunny and a bit cooler Sunday, clear Sunday  night,
  • Then sunny and a bit cooler Monday.
  • highs 92-93 cooling to 87 Monday lows near 55.  (seasonal averages high 83 low 51)

Forecast for the Umpqua Valley including Roseburg:

  • Clear this evening, partly cloudy with patchy fog late tonight,
  • AM clouds with patchy fog, sunny and a bit warmer Tuesday afternoon, mostly clear with patchy fog Tuesday night,
  • Some AM clouds with patchy fog, sunny Wednesday afternoon, clear at night,
  • Sunny and a bit warmer Thursday, then clear Thursday night,
  • lows 56-58 highs 86-90.
  • Sunny and a bit warmer Friday, mostly clear Friday night,
  • Sunny and a bit warmer Saturday, clear Saturday night,
  • Then sunny and a bit cooler Sunday and Monday, clear Sunday night,
  • highs near 94-96 cooling to 90 Monday lows 60-58. (seasonal averages high 85 low 57)

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

  • Mostly clear this evening, mostly cloudy with patchy inland fog late tonight,
  • AM clouds with patchy inland fog, sunny and a bit warmer Tuesday afternoon, partly cloudy in the evening, mostly cloudy with patchy fog late Tuesday night,
  • AM clouds with patchy fog, sunny and a bit cooler Wednesday afternoon, then mostly clear in the evening, mostly cloudy late at night,
  • AM clouds, sunny and a bit warmer Thursday, then mostly clear Thursday night.
  • lows near 53 highs 72-70 warming back to 72 Thursday.
  • Mostly sunny and a bit warmer Friday, mostly clear Friday night,
  • Mostly sunny Saturday, mostly clear in the evening, partly cloudy late Saturday night,
  • Sunny and a bit cooler Sunday, mostly clear in the evening, partly cloudy late Sunday night,
  • Then sunny Monday.
  •  highs 74-72 lows near 54. (seasonal averages high 66 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly clear tonight,
  • Sunny and a bit warmer Tuesday, mostly clear Tuesday night,
  • Mostly sunny and a bit cooler Wednesday, mostly clear at night,
  • Sunny and a bit warmer Thursday, then clear Thursday night.
  • free air freezing level 14,000 ft. tonight and Tuesday, 14,000 ft. falling to 13,000 ft. late Tuesday night, 13,000 ft. Wednesday, 13,000 ft. rising to 14,000 ft. late Wednesday night, then 15,000 ft. Thursday and Thursday night.
  • lows 42-4 highs 72-74.
  • Sunny and a bit warmer Friday and Saturday, mostly clear both nights,
  • Then sunny and a bit cooler Sunday and Monday, clear Sunday night,
  • free air freezing level 15,000 ft. Friday, 16,000 ft. Friday night through Saturday night, above 16,000 ft. Sunday, then 16,000 ft. Sunday night and Monday.
  • highs 80-83 cooling to 76 Monday lows 50-47.