July 15, 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 RED FLAG WARNING IS IN EFFECT UNTIL 8 PM THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE THE ENTIRE WILLAMETTE VALLEY FROM THE GREATER PORTLAND METRO AREA SOUTH THROUGH THE SOUTH WILLAMETTE VALLEY.
- A FIRE WEATHER WATCH IS IN EFFECT FROM 2 PM SUNDAY UNTIL 11 PM MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOWER COLUMBIA OF OREGON.
- A FIRE WEATHER WATCH IS IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVEMNING FOR STRONG GUSTY WIND AND LOW RELATIVE HUMIDITY FOR THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM THIS EVENING FOR THE CENTRAL COAST RANGE OF WESTERN OREGON, THE SOUTH WILLAMETTE VALLEY, AND THE CASCADE FOOTHILLS IN LANE COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 5 PM TODAY FOR THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE NORTHERN OREGON CASCADE FOOTHILLS, THE UPPER HOOD RIVER VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, AND THE GREATER VANCOUVER AREA.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM SUNDAY FOR THE SOUTH CENTRAL OREGON COAST, THE EASTERN DOUGLAS COUNTY FOOTHILLS, CENTRAL DOUGLAS COUNTY, JACKSON COUNTY, THE SOUTH CENTRAL OREGON CASCADES, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM SUNDAY FOR THE GRAND RONDE VALLEY, THE OCHOCO, THE JOHN DAY HIGHLANDS, THE EAST SLOPES OF THE OREGON CASCADES, AND CENTRAL OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM SUNDAY FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE JOHN DAY BASIN, AND THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON.
- A HEAT ADVISORY IS IN EFFECT UNTIL MIDNIGHT MDT SUNDAY FOR HARNEY COUNTY, MALHEUR COUNTY, BAKER COUNTY AND THE OREGON LOWER TREASURE VALLEY.
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 offshore) will be moving through the Pacific Northwest. The graphics for days 1-3 show no frontal systems approaching the coast. The graphics for days 3-7 Tuesday through Saturday show a cold front pushing through Oregon Friday and next Saturday.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- Partly cloudy tonight,
- Some AM clouds, mostly sunny and cooler Sunday afternoon, mostly clear Sunday night,
- Some AM clouds, sunny and cooler Monday afternoon, clear night,
- Sunny and a bit warmer Tuesday, then clear Tuesday night.
- lows 55-52 highs 90-82 warming to 87 Tuesday.
- Sunny and a bit warmer Wednesday, clear Wednesday night,
- Mostly sunny Thursday, mostly clear at night,
- Then mostly sunny and a bit cooler Friday and Saturday, mostly clear Friday night,
- highs 90-85 lows near 53. (seasonal averages high 85 low 52)
Forecast for the Umpqua Valley including Roseburg:
- Clear tonight,
- Sunny and a bit cooler Sunday, mostly clear Sunday night,
- Some AM clouds, sunny and a bit cooler Monday afternoon, clear Monday night,
- Sunny and a bit warmer Tuesday, then clear Tuesday night.
- lows 60-57 highs 94-87 warming to 88 Tuesday.
- Sunny and a bit warmer Wednesday, clear Wednesday night,
- Sunny Thursday and Friday, clear both nights,
- Then sunny and a bit cooler Saturday.
- highs 90-88 lows near 57 (seasonal averages high 86 low 58)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Mostly cloudy at the shore tonight while mostly clear inland this evening and mostly cloudy inland late tonight,
- Some AM clouds, sunny Sunday afternoon, mostly cloudy in the evening, mostly cloudy late Sunday night,
- Some AM clouds, sunny and a bit cooler Monday afternoon, mostly clear at night,
- Sunny and a bit cooler Tuesday, mostly clear in the evening, then partly cloudy late late Tuesday night.
- lows 56-54 warming back to 56 Tuesday night highs near 73.
- Some AM clouds, sunny and a bit cooler Wednesday afternoon, partly cloudy Wednesday night,
- Partly cloudy and a bit warmer Thursday, partly cloudy at night,
- Sunny and a bit warmer Friday, mostly clear in the evening, partly cloudy late Friday night,
- Then sunny Saturday.
- highs 70-73 lows near 56. (seasonal averages high 66 low 54)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Partly cloudy tonight,
- Mostly sunny and cooler Sunday, mostly clear Sunday night,
- Partly cloudy and a bit cooler Monday, clear at night,
- Sunny and a bit warmer Tuesday, then clear Tuesday night.
- free air freezing level above 16,000 ft. tonight and Sunday, 16,000 ft. Sunday night, then 15,000 ft. Monday through Tuesday night.
- lows 52-42 highs 79-72 warming to 78 Tuesday.
- Sunny and a bit warmer Wednesday, clear Wednesday night,
- Sunny and a bit cooler Thursday and Friday, mostly clear both nights,
- Then sunny and a bit cooler Saturday.
- free air freezing level 15,000 ft. Wednesday through Thursday, 16,000 ft. Thursday night, 15,000 ft. Friday, 16,000 ft. Friday night, then 15,000 ft. Saturday.
- highs 82-74 lows 49-46.