July 28, 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
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON NEXT TUESDAY FOR EASTERN PORTIONS OF LANE COUNTY. THIS DOES NOT INCLUDE THE EUGENE-SPRINGFIELD AREA.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL NOON NEXT TUESDAY FOR THE CASCADE FOOTHILLS IN LANE COUNTY AND THE CASCADES IN LANE COUNTY.
- AN AIR QUALITY ADVISORY IS IN EFFECT UNTIL 11 AM NEXT TUESDAY FOR DESCHUTES COUNTY.
- AN AIR QUALITY ALERT IS IN EFFECT UNTIL 5 PM TODAY FOR CURRY COUNTY, JACKSON COUNTY, AND JOSEPHINE COUNTY.
- A RED FLAG WARNING IS IN EFFECT FROM 5 PM UNTIL 8 PM TODAY FOR THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A FIRE WEATHER WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE BURBS BLM AND THE VALE BLM.
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 Low Pressure Trough (“U” shape) keeps our weather pattern stable with normal temperatures. The graphics for days 1-3 show the cold front that pushed through the Pacific Northwest. The graphics for days 3-7 Monday through Friday show no frontal activity pushing into or through Oregon during the period until a front shows up to our northwest Wednesday through next Friday.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- Sunny and a bit warmer today, clear tonight,
- Mostly sunny and a bit cooler Saturday, mostly clear at night,
- Mostly sunny Sunday, then clear Sunday night.
- highs 87-85 lows near 52.
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Then mostly sunny and a bit cooler Wednesday and Thursday, mostly clear Wednesday night,
- highs 88-90 cooling back to 88 Thursday lows 52-54. (seasonal averages high 86 low 53)
Forecast for the Umpqua Valley including Roseburg:
- Some AM clouds, sunny today, mostly clear tonight,
- Sunny Saturday, mostly clear at night,
- Sunny Sunday, then clear Sunday night.
- highs near 86 lows 56-54.
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Then mostly sunny and a bit cooler Wednesday and Thursday, mostly clear Wednesday night,
- highs 89-92 cooling to 88 Wednesday and Thursday lows near 57 (seasonal averages high 88 low 59)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- AM clouds with patchy fog, sunny and a bit warmer with inland haze this afternoon, mostly clear this evening, mostly cloudy late tonight,
- AM clouds and patchy fog, sunny Saturday afternoon, mostly clear in the evening, mostly cloudy with patchy fog at night,
- Patchy AM fog, mostly sunny Sunday afternoon, then mostly clear with patchy fog Sunday night.
- highs near 73 lows near 55.
- Patchy AM fog, sunny Monday afternoon, mostly clear in the evening, partly cloudy late Monday night,
- Patchy AM fog, sunny Tuesday afternoon, partly cloudy at night,
- Then partly cloudy Wednesday through Thursday.
- highs near 74 lows 55-57 cooling back to 55 Wednesday night. (seasonal averages high 67 low 54)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Sunny and hazy and a bit warmer today, hazy with areas of evening smoke, clear late tonight,
- Sunny and a bit cooler Saturday, mostly clear at night,
- Sunny and a bit cooler Sunday, then clear Sunday night.
- free air freezing level 14,000 ft. today through Saturday, 14,000 ft. falling to 13,000 ft. late Saturday night, 13,000 ft. Sunday, then 14,000 ft. Sunday night.
- highs 76-72 lows 45-43.
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Then mostly sunny and a bit cooler Wednesday and Thursday, partly cloudy Wednesday night,
- free air freezing level 14,000 ft. Monday, 15,000 ft. Monday night through Tuesday night, then 14,000 ft. Wednesday through Thursday.
- highs 77-82 cooling to 78 Thursday lows 47-49.