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July 1, 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 HEAT ADVISORY IS IN EFFECT UNTIL 11 PM WEDNESDAY FOR THE CURRY COUNTY COAST, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
  • A RED FLAG WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE NORTHERN OREGON CASCADES, THE EAST SLOPES OF THE CENTRAL OREGON CASCADES,  AND 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 High Pressure Ridge (“Arch” shape) builds in toward the coast bringing warmer air to the Pacific Northwest. No chance of the much needed rain.  The graphics for days 1-3  show the frontal system approaching the coast then falling apart as it moved into the Pacific Northwest. The graphics for days 3-7   Tuesday through Saturday show no fronts pushing into or through the Pacific Northwest during rest of the period.
  • Note: Be prepared for temperatures from the upper 90s to 100 degrees for July 4th and 5th. Drink plenty of water and stay as cool as possible.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Clear tonight,
  • Sunny and a bit warmer Sunday and Monday, clear both nights,
  • Sunny and a bit warmer Tuesday (Independence Day), then clear Tuesday night.
  • lows 50-58 highs 87-97.
  • Sunny Wednesday, clear Wednesday night,
  • Sunny and a bit cooler Thursday, mostly clear at night,
  • Then mostly sunny and a bit cooler Friday and Saturday, mostly clear Friday night,
  • highs 97-84 lows 54-52.  (seasonal averages high 80 low 50)

Forecast for the Umpqua Valley including Roseburg:

  • Clear tonight,
  • Sunny and a bit warmer Sunday, clear Sunday night,
  • Sunny and a bit warmer Monday, clear at night,
  • Sunny and a bit warmer Tuesday (Independence Day), then clear Tuesday night.
  • lows near 57 highs 92-99.
  • Sunny Wednesday, clear Wednesday night,
  • Sunny and a bit cooler Thursday, clear at night,
  • Then mostly sunny and a bit cooler Friday and Saturday, mostly clear Friday night.
  • highs 99-87 lows near 57. (seasonal averages high 82 low 55)

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

  • Mostly clear this evening, partly cloudy late tonight,
  • AM coastal clouds and sunny and a bit cooler Sunday afternoon while  sunny Inland Sunday, mostly clear in the evening, mostly cloudy late Sunday night,
  • AM clouds with patchy coastal fog, sunny and a bit warmer Monday, mostly clear at night,
  • Sunny and warmer Tuesday (Independence Day), then mostly clear Tuesday night.
  • lows near 52 highs 70-75.
  • Mostly sunny and a bit cooler Wednesday, partly cloudy Wednesday night,
  • Partly cloudy and a bit cooler Thursday, partly cloudy at night,
  • Partly cloudy Friday and in the evening, mostly cloudy Friday night,
  • Some AM clouds, then sunny Saturday afternoon.
  •  highs 72-68 lows near 53. (seasonal averages high 65 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Clear tonight,
  • Sunny and a bit warmer Sunday, clear Sunday night,
  • Sunny and a bit cooler Monday, clear at night,
  • Sunny and a bit warmer Tuesday (Independence Day), then clear Tuesday night.
  • free air freezing level 15,000 ft. tonight through Sunday night, then 15,000 ft. falling to 14,000 ft. Monday afternoon, 15,000 ft. Monday night through Tuesday night.
  • lows 46-52 highs 82-77 warming back to 82 Tuesday.
  • Sunny and a bit warmer Wednesday, clear Wednesday night,
  • Sunny and a bit cooler Thursday, clear at night,
  • Sunny and a bit cooler Friday and Saturday, clear Friday night,
  • free air freezing level 15,000 ft. Wednesday and Wednesday night, 14,000 ft. Thursday through Friday night, then 13,000 ft. Saturday.
  • highs 84-75 lows 52-47.