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July 11, 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 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   Friday through Tuesday show a cold front well to the Northwest Friday and Saturday, then moves in Monday and Tuesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly clear tonight,
  • Some AM clouds, sunny and a bit cooler Wednesday afternoon, mostly clear Wednesday night,
  • Mostly sunny and a bit warmer Thursday,  clear at night,
  • Sunny and a bit warmer Friday then, mostly clear Friday night.
  • lows 53-57 highs 84-92.
  • Mostly sunny and a bit warmer Saturday and Sunday, mostly clear both nights,
  • Mostly sunny and a bit cooler Monday, clear Monday night,
  • Then sunny and a bit cooler Tuesday.
  • highs 95-83 lows 56-52.  (seasonal averages high 84 low 52)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear this evening, partly cloudy late tonight,
  • Some AM clouds, sunny Wednesday afternoon, clear Wednesday night,
  • Sunny and a bit warmer Thursday, clear at night,
  • Sunny and a bit warmer Friday, then mostly clear Friday night.
  • lows 57-62 highs 88-96.
  • Sunny and a bit warmer Saturday, mostly clear Saturday night,
  • Sunny and a bit cooler Sunday, mostly clear at night,
  • Mostly sunny and a bit cooler Monday , clear Monday night,
  • Then sunny and a bit cooler Tuesday.
  • highs near 98-86 lows 60-56. (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 fog late tonight,
  • AM clouds with patchy fog, sunny and a bit cooler Wednesday afternoon, mostly clear in the evening, partly cloudy late Wednesday night,
  • AM clouds, sunny and a bit warmer Thursday, mostly clear at night,
  • Mostly sunny and a bit warmer Friday, mostly clear in the evening, then partly cloudy Friday night.
  • lows 56-54 highs 67-75.
  • Sunny and a bit cooler Saturday, mostly clear in the evening, partly cloudy late Saturday night,
  • Some AM clouds, sunny and a bit cooler Sunday afternoon, partly cloudy in the evening, mostly cloudy late at night,
  • Mostly sunny Monday, mostly clear Monday night,
  • Then mostly sunny and a bit cooler Tuesday.
  •  highs 74-70 lows near 55. (seasonal averages high 66 low 54)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly clear tonight,
  • Mostly sunny and a bit cooler Wednesday, mostly clear Wednesday night,
  • Sunny and a bit warmer Thursday, clear at night,
  • Sunny and a bit warmer Friday, then mostly clear Friday night
  • free air freezing level 14,000 ft. falling to 13,000 ft. late tonight, 13,000 ft. rising to 14,000 ft. Wednesday afternoon, 13,000 ft. rising to 14,000 ft. late Wednesday night, 14,000 ft. rising to 15,000 ft. Thursday afternoon, 15,000 ft. Friday, then 16,000 ft. Friday night.
  • lows 44-52 highs 72-82.
  • Sunny and a bit warmer Saturday, mostly clear Saturday night,
  • Sunny and a bit cooler Sunday, mostly clear at night,
  • Then sunny and a bit cooler Monday and Tuesday, clear Monday night,
  • free air freezing level 16,000 ft. Saturday, above 16,000 ft. Saturday night through Sunday night, 16,000 ft. Monday, 15,000 ft. Monday night, then 14,000 ft. Tuesday.
  • highs 87-72 lows 52-43.