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June 30, 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 TUESDAY 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 FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EAST SLOPES OF THE NORTHERN 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 today. Another cold front will be attempting to push through Oregon Sunday. The graphics for days 3-7   Monday through Friday show no fronts pushing into or through the Pacific Northwest during the period.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Clear tonight,
  • Sunny and a bit cooler Saturday, clear Saturday night,
  • Sunny and Sunday, clear at night,
  • Sunny and a bit warmer Monday, then clear Monday night,
  • lows 52-54 highs 87-90.
  • Sunny and a bit warmer Tuesday (Independence Day), clear Tuesday night,
  • Sunny and a bit warmer Wednesday, clear Wednesday night,
  • Sunny and a bit cooler Thursday, clear at night,
  • Then mostly sunny and a bit cooler Friday.
  • highs 96-98 cooling to 89 Friday lows 58-54.  (seasonal averages high 80 low 50)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear tonight,
  • Sunny and a bit cooler Saturday, clear Saturday night,
  • Sunny and a bit warmer Sunday, clear at night,
  • Sunny and a bit warmer Monday, then clear Monday night.
  • lows near 58 highs 92-94.
  • Sunny and a bit warmer Tuesday (Independence Day), clear Tuesday night,
  • Sunny and a bit cooler Wednesday, clear at night,
  • Sunny Thursday, clear Thursday night,
  • The sunny Friday.
  • highs 97-90 lows 62-58. (seasonal averages high 81 low 55)

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

  • Partly cloudy, patchy fog late tonight,
  • Patchy AM fog, sunny and warmer Saturday afternoon, mostly clear with patchy fog late Saturday night,
  • Patchy AM coastal fog, sunny Sunday, mostly clear with patchy fog at night,
  • Sunny and a bit cooler Monday, then mostly clear Monday night.
  • lows 50-52 cooling back to 50 Sunday night warming back to 52 Monday night highs 72-70.
  • Mostly sunny and a bit warmer Tuesday (Independence Day), mostly clear Tuesday night,
  • Mostly sunny and a bit cooler Wednesday, partly cloudy at night,
  • Sunny and a bit cooler Thursday, partly cloudy Thursday night,
  • Then partly cloudy and a bit cooler Friday.
  •  highs 73-69 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 Saturday and Sunday, clear both nights,
  • Sunny and a bit cooler Monday, then clear Monday night.
  • free air freezing level 15,000 ft. tonight and Saturday, 16,000 ft. Saturday night, then 15,000 ft. Sunday through Monday night.
  • lows near 49 highs 80-82 cooling to 79 Monday.
  • Sunny and a bit warmer Tuesday (Independence Day), clear Tuesday night,
  • Sunny and a bit warmer Wednesday, clear Wednesday night,
  • Mostly sunny and a bit cooler Thursday, mostly clear Thursday night,
  • Then mostly sunny and a bit cooler Friday.
  • free air freezing level 15,000 ft. Tuesday through Wednesday night, then 14,000 ft. Thursday through Friday.
  • highs 82-85 cooling to 78 Friday lows 49-52 cooling to 50 Wednesday night.