TIM CHUEY WEATHER

July 26, 2024

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

• AN AIR QUALITY ALERT IS IN EFFECT UNTIL 5 PM TODAY FOR DOUGLAS COUNTY AND KLAMATH COUNTY.
• AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR CROOK, DESCHUTES, GRANT, MONROE, UMATILLA, AND WHEELER COUNTIES.
• AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR HARNEY, AND MALHEUR COUNTIES.

HEALTH ADVISORIES

• 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  in Canada and surface High Pressure off our coast keep the weather mild. The graphics for days 1-3  show no frontal systems moving through Oregon. The graphics for days 3-7   Sunday through Thursday show a cold frontal system to our northwest next Thursday.
   

Forecast For The South Willamette Valley Including Eugene-Springfield:

• Sunny and a bit warmer today with afternoon haze, mostly clear tonight,
• Sunny and a bit cooler Saturday, mostly clear at night,
• Sunny and a bit warmer Sunday, then mostly clear Sunday night.
• highs 87-84 warming to 86 Sunday lows 49-55.
• Mostly sunny and a bit warmer Monday, partly cloudy with a slight (20%) of evening showers, mostly cloudy with a slight (20%) chance of showers late Monday night,
• Mostly cloudy with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Tuesday afternoon, just partly cloudy at night,
• Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
• Then mostly sunny and a bit warmer Thursday.
• highs 87-83 warming to 92 Thursday lows 59-57.  (seasonal averages high 86  low 53)

Forecast for the Umpqua Valley including Roseburg:

• Sunny and a bit warmer today, mostly clear tonight,
• Sunny Saturday, mostly clear at night,
• Mostly sunny and a bit warmer Sunday, then mostly clear Sunday night.
• highs 85-88 lows 56-60.
• Partly cloudy Monday, partly cloudy Monday night,
• Mostly cloudy start, partly cloudy and a bit cooler Tuesday afternoon, partly cloudy at night,
• Partly cloudy and a bit warmer Wednesday, mostly clear Wednesday night,
• Then partly cloudy Thursday.
• highs 88-86 warming to 92 Thursday lows near 62 (seasonal averages high 88 low 58)

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

• Some AM clouds, sunny and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy late tonight,
• AM clouds, sunny and a bit warmer Saturday afternoon, mostly clear in the evening, mostly cloudy late at night,
• Partly cloudy and a bit warmer Sunday, then partly cloudy Sunday night.
• highs 70-74 lows 54-56.
• Mostly cloudy start, partly cloudy Monday afternoon, mostly cloudy with a slight (20%) chance of showers Monday night,
• Mostly cloudy with a slight (20%) chance of showers Tuesday, mostly cloudy at night,
• Mostly cloudy and a bit warmer Wednesday, partly cloudy Wednesday night,
• Then partly cloudy Thursday.
• highs 74-75 lows near 57. (seasonal average high 67 low 54)

Forecast for the Northern Oregon Cascades including Willamette Pass:

• Sunny and hazy with areas of smoke and a bit warmer today, hazy with areas of evening smoke, partly cloudy late tonight,
• AM haze, sunny and a bit cooler Saturday, mostly clear and hazy with areas of smoke at night,
• Sunny Sunday, then mostly clear Sunday night.
• free air freezing level 15,000 ft. falling to 14,000 this afternoon, then 14,000 ft. tonight through Sunday night.
• highs 74-72 lows 44-46.
• Sunny and a bit warmer Monday, partly cloudy Monday night,
• Mostly sunny and a bit cooler with a slight (20%) chance of showers Tuesday, just partly cloudy at night,
• Sunny and a bit warmer Wednesday, mostly clear Wednesday night,
• Then sunny and a bit warmer Thursday.
• free air freezing level 14,000 ft. Monday, 13,000 ft. Monday night, snow level above 8,000 ft. Tuesday, 15,000 ft. Tuesday night then free air freezing level 16,000 ft. Wednesday through Thursday.
• highs 73-69 warming to 80 Thursday lows 48-52.