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July 4, 2022

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 HEALTH ADVISORY IS IN EFFECT FOR AREAS AROUND EAGLE POINT IN UPPER KLAMATH LAKE IN KLAMATH COUNTY DUE THE PRESENCE OF A CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOM AND CYANOTOXINS ABOVE RECREATIONAL USE VALUES FOR HUMAN EXPOSURE. PEOPLE SHOULD AVOID SWIMMING AND HIGH-SPEED WATER ACTIVITIES, SUCH AS WATER SKIING OR POWER BOATING, IN AREAS OF THE LAKE WHERE BLOOMS ARE, AS THE MAJOR RISK OF EXPOSURE IS FROM INGESTING WATER. THESE TOXINS ARE NOT ABSORBED THROUGH THE SKIN. HOWEVER, IF YOU HAVE SKIN SENSITIVITIES  YOU MAY GET A PUFFY RED RASH. IT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SPECIAL CARE SHOULD BE TAKEN WITH CHILDREN, ESPECIALLY THE YOUNGER ONES, WHEN THEY ARE NEAR THE WATER

  • A PERMANENT RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE SOUTH UMPQUA RIVER AND MAINSTEM UMPQUA RIVER. THE ADVISORY COVERS THE SOUTH UMPQUA RIVER FROM CANYONVILLE DOWNSTREAM TO THE CONFLUENCE OF THE MAINSTEM UMPQUA RIVER, AND THE MAINSTEM UMPQUA RIVER DOWNSTREAM PAST ELKTON TO LAWSON BAR. PEOPLE IN THE BEDROCK ALONG THE RIVERS EDGE ARE ARE KNOWN TO DEVELOP CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED AT SEVERAL ACCESS AREAS ALONG THE RIVER.

THE WEATHER PATTERN

  • As the Upper Level Low Pressure Trough will continue the onshore moisture airflow just enough to give us AM clouds and possible drizzle. The graphics for days 1-3 show a frontal system moving into Northern California Tuesday. The graphics for days 3-7    Thursday through Monday show the frontal activity for the Pacific Northwest through the period and one frontal system moving into northern California with its associated front Thursday and Friday.

Forecast for the South Willamette Valley including Eugene-Springfield:

  • AM clouds and sun, mostly sunny and a bit warmer with a slight (20%) chance of showers this afternoon (Independence Day), partly cloudy with a slight (20%) chance of evening showers, a (40%) chance of showers late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with a good (50%) chance of showers Tuesday (under 0.10 in. of rain possible), a good (50%) chance of showers at night (under 0.10 in. of rain possible),
  • Partly cloudy and a bit warmer with a good (50%) chance of showers Wednesday, partly cloudy with a slight (20%) chance of evening showers, then just mostly cloudy late Wednesday night.
  • highs 79-73 warming to 76 Wednesday lows near 57.
  • A mix of clouds and sun and a  bit warmer with a slight (20%) chance of showers Thursday afternoon, partly cloudy Thursday night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Friday afternoon, just partly cloudy at night,
  • Then mostly sunny and a bit warmer Saturday and Sunday, mostly clear Saturday night.
  • highs 77-82 lows 54-52. (Seasonal Averages high 81 low 51)

Forecast for the Umpqua Valley including Roseburg:

  • Partly cloudy with a slight (20%) chance of AM showers, mostly sunny and a bit warmer this afternoon (Independence Day), mostly cloudy with a (30%) chance of showers tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with AM showers likely (70%), a good (50%) chance of showers and a bit cooler Tuesday afternoon (under 0.10 in. of rain possible), a (30%) chance of showers at night (0.10 in. of rain possible),
  • Mostly cloudy with a (40%) chance of showers Wednesday, then just mostly cloudy Wednesday night.
  • highs 80-74 lows near 58.
  • Mostly cloudy and a bit warmer Thursday and Friday, partly cloudy both nights,
  • Partly cloudy Saturday, mostly clear Saturday night,
  • Then mostly sunny and a bit warmer Sunday.
  • highs 77-82 lows near 55. (Seasonal Averages high 83 low 56).

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

  • Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy with a slight (20%) chance of showers and a bit warmer this afternoon (Independence Day), mostly cloudy with a (30%) chance of showers tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with patchy AM fog and showers likely (70%), a bit cooler with a good (50%) chance of showers Tuesday afternoon (under 0.10 in. of rain possible), a (30%) chance of showers with patchy fog late at night (0.10 in. of rain possible),
  • Patchy AM and late night fog, mostly cloudy and a bit warmer with a (40%) chance of showers Wednesday, then just mostly cloudy late Wednesday night.
  • highs 69-67 warming back to 69 Wednesday lows near 54.
  • Patchy AM and late night fog, mostly cloudy with a slight (20%) chance of showers Thursday afternoon, partly cloudy Thursday night,
  • Partly cloudy and a  warmer Friday and Saturday, partly cloudy both nights,
  • Then partly cloudy Sunday.
  • highs 68-70 lows near 53. (Seasonal Averages high 65 low 53)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy with a (40%) chance of AM showers, partly cloudy and a bit warmer with a slight (20%) chance of showers this afternoon (Independence Day), mostly cloudy with a (40%) chance of showers tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with AM showers likely (70%), showers likely (70%) and a bit cooler with a slight (20%) chance of thunderstorms Tuesday afternoon, a good (50%) chance of showers at night,
  • Mostly cloudy with AM showers likely (70%), showers likely (70%) and a bit warmer with a slight (20%) chance of thunderstorms Wednesday afternoon, partly cloudy with a slight (20%) chance of evening showers and thunderstorms, then just mostly cloudy late Wednesday night.
  • snow level above 8,000 ft. today and tonight, then above 8,000 ft. Tuesday through Wednesday night.
  • highs 64-62 warming back to 64 Wednesday lows 46-52 cooling to 47 Wednesday night.
  • A mix of clouds and sun with a (40%) chance of showers and a slight (20%) chance of thunderstorms and a bit warmer Thursday afternoon, partly cloudy with a slight (20%) chance of evening showers and thunderstorms, just partly cloudy late Thursday night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Friday afternoon and evening, partly cloudy late at night,
  • Partly cloudy with a slight (20%) chance of showers Saturday afternoon, mostly clear Saturday night,
  • Then mostly sunny and a bit warmer Sunday.
  • snow level above 8,000 ft. Thursday through Saturday, free air freezing level 13,000 ft. Saturday, free air freezing level 13,000 ft. Saturday night, then 14,000 ft. Sunday.
  • highs 65-72 lows 46-44.