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 FROM 2 PM UNTIL 8 PM TODAY 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 SUNDAY AFTERNOON THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOWER COLUMBIA OF OREGON.
- A FIRE WEATHER WATCH IS IN EFFECT FROM 2 PM SUNDAY THROUGH 9 PM SUNDAY 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 TODAY 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 FROM NOON 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 FROM NOON TODAY 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 FROM 11 AM TODAY 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:
- Mostly sunny and a bit warmer, Hot again today, partly cloudy tonight,
- Mostly sunny and a bit cooler Sunday, still very warm, mostly clear at night,
- Partly cloudy and cooler Monday, then clear Monday night.
- highs 98-82 lows 56-52.
- Sunny and a bit warmer Tuesday, Wednesday, and Thursday, clear each night,
- Then mostly sunny and a bit cooler Friday.
- highs 83-89 lows near 52. (seasonal averages high 84 low 52)
Forecast for the Umpqua Valley including Roseburg:
- Sunny and a bit warmer, Hot today, clear tonight,
- Sunny and a bit cooler Sunday, mostly clear at night,
- Some AM clouds, sunny and a bit cooler Monday afternoon, then clear Monday night.
- highs 100-87 lows 60-57.
- Sunny and a bit warmer Tuesday and Wednesday, clear both nights,
- Then sunny Thursday and Friday, clear Thursday night.
- highs 87-89 lows near 57 (seasonal averages high 86 low 58)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Some AM clouds, sunny and a bit warmer this afternoon, clear this evening, partly cloudy late tonight,
- Some AM clouds, sunny Sunday afternoon, partly cloudy in the evening, mostly cloudy late at night,
- Some AM clouds, sunny and a bit cooler Monday afternoon, then mostly clear Monday night.
- highs near 73 lows 56-54.
- Sunny and a bit cooler Tuesday, mostly clear in the evening, partly cloudy late Tuesday night,
- Mostly sunny and a bit cooler Wednesday, partly cloudy at night,
- Partly cloudy and a bit warmer Thursday, partly cloudy Thursday night,
- Some AM clouds, then sunny and a bit warmer Friday afternoon.
- highs 70-68 warming back to 70 Friday lows near 55. (seasonal averages high 66 low 54)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Mostly sunny and a bit warmer today, partly cloudy tonight,
- Mostly sunny and a bit cooler Sunday, mostly clear at night,
- Mostly sunny and cooler Monday, then clear Monday night.
- free air freezing level 16,000 ft. today, above 16,000 ft. tonight through Sunday, 16,000 ft. Sunday night, then 15,000 ft. Monday and Monday night.
- highs 86-72 lows 52-42.
- Sunny and a bit warmer Tuesday and Wednesday, clear both nights,
- Sunny Thursday, clear Thursday night,
- Then sunny and a bit cooler Friday.
- free air freezing level 15,000 ft. Tuesday through Thursday, then 16,000 ft. Thursday night and Friday.
- highs 76-80 cooling to 78 Friday lows near 47.