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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 FROM 11 AM TODAY 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 a frontal system approaching the coast Thursday, then moving over the Pacific Northwest today. Another cold front will be to our northwest Saturday. The graphics for days 3-7   Monday through Friday show a cold front pushing through the Pacific Northwest Monday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Sunny and a bit cooler today and Saturday, clear both nights,
  • Sunny and a bit warmer Sunday, then clear Sunday night.
  • highs 88-86 warming back to 88 Sunday lows near 53.
  • Sunny and a bit warmer Monday, clear Monday night,
  • Sunny and a bit warmer Tuesday (Independence Day), clear at night,
  • Then sunny and a bit cooler Wednesday and Thursday, clear Wednesday night.
  • highs 90-97 cooling to 89  Thursday lows 55-58 cooling back to 55 Wednesday night.  (seasonal averages high 79 low 50)

Forecast for the Umpqua Valley including Roseburg:

  • Sunny today and Saturday, clear both nights,
  • Sunny Sunday, then clear Sunday night.
  • highs near 92 lows near 58.
  • Sunny and a bit warmer Monday, clear Monday night,
  • Sunny and a bit warmer Tuesday (Independence Day), clear at night,
  • Then sunny and a bit cooler Wednesday and Thursday, clear Wednesday night.
  • highs 95-97 cooling to 93 Thursday lows 58-62. (seasonal averages high 81 low 55)

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

  • Some AM clouds and patchy fog, sunny and a bit cooler this afternoon, mostly clear t..onight,
  • Sunny and a bit warmer Saturday, mostly clear at night,
  • Sunny and a bit cooler Sunday, then mostly clear Sunday night.
  • highs 70- 72 cooling back to 70 Sunday lows near 50.
  • Sunny and a bit warmer Monday, mostly clear Monday night,
  • Mostly sunny and a bit warmer Tuesday (Independence Day), mostly clear at night,
  • Mostly sunny and a bit cooler Wednesday, mostly clear Wednesday night,
  • Then sunny and a bit warmer Thursday.
  •  highs 72-74 cooling back to 72 Tuesday warming back to 74 Wednesday night lows 50-52. (seasonal averages high 65 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Sunny and a bit cooler today, clear tonight,
  • Sunny and a bit warmer Saturday, clear at night,
  • Sunny Sunday, then clear Sunday night.
  • free air freezing level 15,000 ft. today through Saturday, 16,000 ft. falling to 15,000 ft. late Saturday night, then 15,000 ft. Sunday and Sunday night.
  • highs near 80 lows 50-48.
  • Sunny and a bit cooler Monday, clear Monday night,
  • Sunny and a bit warmer Tuesday (Independence Day), clear at night,
  • Then sunny and a bit cooler Wednesday and Thursday, clear Wednesday night.
  • free air freezing level 14,000 ft. Monday, 15,000 ft. Monday night through Wednesday night, then 14,000 ft. Thursday.
  • highs 78-84 cooling back to 78 Thursday lows 49-52 cooling to 50 Wednesday night.