July 31, 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
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE GREATER PORTLAND METRO AREA, THE UPPER HOOD RIVER VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, THE CENTRAL WILLAMETTE VALLEY .
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE EASTERN COLUMBIA RIVER GORGE OF OREGON, THE LOWER COLUMBIA BASIN OF OREGON, THE JOHN DAY BASIN, THE OCHOCO, THE GRANDE RONDE VALLEY, THE JOHN DAY HIGHLANDS, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON, NORTH CENTRAL OREGON, AND CENTRAL OREGON, THE NORTHERN BLUE MOUNTAINS OF OREGON, THE SOUTHERN BLUE MOUNTAINS OF OREGON, THE NORTHWEST BLUE MOUNTAINS, THE SISKIYOU MOUNTAINS, THE SOUTHERN OREGON CASCADES, AND THE KLKAMATH BASIN.
- AN EXCESSIVE HEAT WARNING IS IN EFFECT UNTIL 11 PM TONIGHT FOR THE EASTERN DOUGLAS COUNTY FOOTHILLS AND THE SOUTH CENTRAL OREGON CASCADES, EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, AND THE SOUTH CENTRAL OREGON CASCADES.
- A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH MONDAY MORNING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR THE UMPQUA NATIONAL FOREST, THE WESTERN ROGUE BASIN INCLUDING THE ILLINOIS VALLEY, THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN, AND THE FREMONT-WINEMA NATIONAL FOREST.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR WALLOWA COUNTY, THE GRANDE RONDE VALLEY, THE EAST SLOPES OF THE OREGON CASCADES, THE JOHN DAY BASIN, THE OCHOCO, THE JOHN DAY HIGHLANDS, THE FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON, THE SOUTHERN BLUE MOUNTAINS OF OREGON, AND THE NORTHWEST BLUE MOUNTAINS.
- A HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TONIGHT BELOW 4,000 FT. FOR THE NORTHERN OREGON CASCADES AND THE CASCADES IN LANE COUNTY.
- A HEAT ADVISORY IS IN EFFECT UNTIL 11 PM TONIGHT FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- HEAT ADVISORY IS IN EFFECT UNTIL 9 PM TONIGHT FOR THE COAST RANGE ON NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE LOWER COLUMBIA, AND THE SOUTH WILLAMETTE VALLEY.
- THE PUBLIC HEALTH ADVISORY ISSUED FOR UNSAFE LEVELS OF FECAL BACTERIA IN OCEAN WATERS AT D RIVER BEACH IN LINCOLN COUNTY HAS BEEN LIFTED.
- A RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR AREAS AROUND EAGLE RIDGE COUNTY PARK 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
- The Upper Level High Pressure Ridge (“Arch” shape) bubbling up from the southwest still keeps us hot, but relief is on the way as it weakens. The graphics for days 1-3 show no frontal systems attempting to move southward into Oregon. The graphics for days 3-7 Tuesday through Saturday show a frontal system pushing into the Pacific Northwest Wednesday and another front moving through next Thursday, yet another front next Sunday.
Forecast for the South Willamette Valley including Eugene-Springfield:
- Mostly sunny and a maybe just bit cooler today, partly cloudy tonight,
- Partly cloudy and a bit cooler Monday, partly cloudy at night,
- A mix of clouds and sun and a bit cooler Tuesday, then mostly clear Tuesday night.
- highs 98-87 lows 62-56.
- Partly cloudy and a bit cooler Wednesday, partly cloudy Wednesday night,
- Partly cloudy with a slight (20%) chance of AM showers, just partly cloudy Thursday afternoon and at night,
- Then mostly sunny and a bit warmer Friday and Saturday, mostly clear Friday night
- highs 82-92 lows 56-53 warming to 55 Friday night. (Seasonal Averages high 86 low 52)
Forecast for the Umpqua Valley including Roseburg:
- Hazy with AM sun with a slight (20%) chance of thunderstorms, partly cloudy and a bit warmer with a slight (20%) chance of thunderstorms this afternoon and evening, mostly cloudy and hazy with a slight (20%) chance of thunderstorms late tonight,
- Partly cloudy with AM haze and a slight (20%) chance of thunderstorms, partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Monday afternoon, just partly cloudy late at night,
- Partly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Tuesday afternoon, then mostly clear Tuesday night,
- highs 96-87 lows 65-59.
- Sunny and a bit cooler Wednesday, partly cloudy Wednesday night,
- Partly cloudy and a bit cooler Thursday, mostly clear at night,
- Mostly sunny and a bit warmer Friday, mostly clear Friday night,
- Then sunny and a bit warmer Saturday.
- highs 83-80 warming to 92 Saturday lows near 58 (Seasonal Averages high 88 low 58).
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Mostly cloudy and hazy with patchy AM coastal fog, partly cloudy and hazy and a bit warmer this afternoon at the shore while partly cloudy and hazy inland with a slight (20%) chance of thunderstorms and a bit warmer this afternoon, mostly cloudy with a slight (20%) chance of showers late tonight while partly cloudy in the evening inland and mostly cloudy inland with patchy fog and a slight (20%) chance of showers late tonight,
- Mostly cloudy and hazy with patchy AM fog, partly cloudy Monday afternoon, partly cloudy with a slight (20%) chance of evening thunderstorms and mostly cloudy with patchy fog inland late at night.
- Then partly cloudy Tuesday and Tuesday night.
- highs near 73 lows 57-55.
- Partly cloudy and a bit cooler Wednesday and in the evening, mostly cloudy late Wednesday night,
- Partly cloudy Thursday and at night,
- Then mostly sunny and a bit warmer Friday and Saturday, mostly clear Friday night.
- highs 72-74 lows near 55. (Seasonal Averages high 67 low 54)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- AM sun with a slight (20%) chance of showers, partly cloudy and a bit cooler with a (40%) chance of showers and a slight (20%) thunderstorms this afternoon and evening, a slight (20%) chance of showers and thunderstorms late tonight,
- A mix of clouds and sun with a slight (20%) chance of AM showers, cooler with a (30%) of showers and a slight (20%) chance of thunderstorms Monday afternoon, partly cloudy with a slight (20%) chance of evening showers and thunderstorms, just partly cloudy late at night,
- Partly cloudy with a slight (20%) chance of showers and thunderstorms and a bit cooler Tuesday afternoon, then mostly clear Tuesday night.
- snow level above 8,000 ft. tonight through Tuesday, then free air freezing level 14,000 ft. Tuesday night.
- highs 90-74 lows 58-50.
- Mostly sunny and a bit cooler Wednesday, partly cloudy with a slight (20%) chance of showers Wednesday night,
- Partly cloudy and a bit cooler with a slight (20%) chance of showers Thursday, partly cloudy at night,
- Then mostly sunny and a bit warmer Friday and Saturday, mostly clear Friday night.
- free air freezing level 13,000 ft. Wednesday, snow level above 8,000 ft. Wednesday night and Thursday, free air freezing level 14,000 ft. Thursday night and Friday, then 16,000 ft. Friday night and Saturday.
- highs 72-67 warming to 80 Saturday lows 46-50.
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- For all of your Eugene-Springfield and Lane County News, Weather, and Sports go to: EugeneDailyNews.com
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Mostly clear again tonight, then sunshine and slightly cooler for your Friday.
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Forecast for the Oregon Coast including Coos Bay and North Bend:
- Becoming mostly cloudy late tonight,
- Some AM clouds, sunny and a bit warmer Friday afternoon, clear in the evening, partly cloudy late Friday night,
- Mostly cloudy start, partly cloudy and slightly cooler Saturday afternoon, mostly clear at night,
- Mostly sunny Sunday, then mostly clear Sunday night.
- lows 54-56 cooling back to 54 Sunday night highs 70-69.
- Mostly sunny and a bit warmer Monday, mostly clear Monday night,
- Partly cloudy and slightly cooler Tuesday, partly cloudy at night,
- Then partly cloudy Wednesday through Thursday.
- highs 73-72 lows 54-56 cooling back to 54 Wednesday night. (Seasonal Averages high 66 low 54)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Mostly clear tonight,
- Mostly sunny and a bit cooler Friday, clear Friday night,
- Sunny and a bit warmer Saturday, mostly clear at night,
- Some AM clouds, mostly sunny and a bit cooler Sunday, then clear Sunday night.
- free air freezing level 15,000 ft. falling to 14,000 ft. late tonight, 14,000 ft. rising to 15,000 ft. Friday afternoon, 15,000 ft. Friday night through Sunday, then 16,000 ft. Sunday night.
- lows 49-47 highs 74-72 warming back to 74 Sunday.
- Sunny and a bit warmer Monday, clear Monday night,
- Sunny Tuesday, mostly clear at night,
- Then mostly sunny and a bit cooler Wednesday and Thursday, mostly clear Wednesday night.
- free air freezing level 16,000 ft. Monday through Thursday.
- highs 80-75 lows 53-50.