Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Seattle WA
112 PM PDT Fri Aug 22 2025
WAZ305>309-230615-
/O.CON.KSEW.XH.W.0001.000000T0000Z-250826T1200Z/
Foothills and Valleys of the North Cascades-Foothills and Valleys
of Snohomish and Northern King Counties-Foothills and Valleys of
Central King County-Foothills and Valleys of Pierce and Southern
King Counties-Foothills and Valleys of Thurston and Lewis
Counties-
Including Covington-Sawyer-w, Darrington, Granite Falls,
Enumclaw, Sudden Valley, Prairie Ridge, North Bend, Monroe, Lea
Hill, Mirrormont, Morton, Maple Valley, Duvall, South Hill, Elk
Plain, Eastgate, Sahalee, Mossyrock, and Pine Lake
112 PM PDT Fri Aug 22 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY...
* WHAT...Hot conditions with high temperatures ranging from the
upper 80s to upper 90s and low temperatures mostly in the 60s.
This will pose a major risk of heat-related illness.
* WHERE...Foothills and Valleys of the North Cascades, Foothills and
Valleys of Central King County, Foothills and Valleys of Pierce
and Southern King Counties, Foothills and Valleys of Snohomish and
Northern King Counties, and Foothills and Valleys of Thurston and
Lewis Counties.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit wa211.org anytime.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Seattle WA
112 PM PDT Fri Aug 22 2025
WAZ314>316-230615-
/O.UPG.KSEW.HT.Y.0005.000000T0000Z-250826T1200Z/
/O.EXA.KSEW.XH.W.0001.000000T0000Z-250826T1200Z/
Eastside-City of Seattle-Lowlands of Pierce and Southern King
Counties-
Including Tacoma, Seattle, Bothell, Kenmore, Kingsgate, Renton,
Kent, Redmond, Newport Hills, Federal Way, Kirkland, and Mercer
Island
112 PM PDT Fri Aug 22 2025
...EXTREME HEAT WARNING IN EFFECT UNTIL 5 AM PDT TUESDAY...
* WHAT...Hot conditions with high temperatures ranging from the
upper 80s to mid 90s and low temperatures in the mid 60s. This
will pose a major risk of heat-related illness.
* WHERE...City of Seattle, Eastside, and Lowlands of Pierce and
Southern King Counties.
* WHEN...Until 5 AM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit wa211.org anytime.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Portland OR
208 PM PDT Fri Aug 22 2025
ORZ108>125-WAZ204>210-230915-
/O.EXT.KPQR.XH.W.0002.000000T0000Z-250827T0600Z/
Lower Columbia River-Tualatin Valley-Portland West Hills and
Chehalem Mountain-Inner Portland Metro-East Portland Metro-Outer
Southeast Portland Metro-West Central Willamette Valley-East
Central Willamette Valley-Benton County Lowlands-Linn County
Lowlands-Lane County Lowlands-West Columbia River Gorge of Oregon
above 500 ft-West Columbia River Gorge I-84 Corridor-Upper Hood
River Valley-Central Columbia River Gorge I-84 Corridor-Clackamas
County Cascade Foothills-Cascade Foothills of Marion and Linn
Counties-Lane County Cascade Foothills-Cowlitz County Lowlands-
North Clark County Lowlands-Inner Vancouver Metro-East Clark
County Lowlands-South Washington Cascade Foothills-West Columbia
River Gorge SR 14 Corridor-Central Columbia River Gorge SR
14 Corridor-
Including the cities of Sellwood, North Bonneville, Molalla,
Dallas, Monmouth, Odell, Underwood, Salem, Woodburn, Vida, Sandy,
Tigard, Philomath, Evergreen, Parkdale, Camas, Scappoose,
Brownsville, Keizer, Lake Merwin, Stevenson, Mill City, Rooster
Rock, Springfield, Portland, Sherwood, Woodland, Washougal,
Brightwood, Forest Grove, Monroe, Salmon Creek, Beacon Rock SP,
Bonneville, Eugene, Hockinson, Newberg, Silver Falls, Gresham,
Hood River, Amboy, McMinnville, Vancouver, Rockcreek, Multnomah
Falls, Lake Oswego, Junction City, Corbett, McKenzie Bridge,
Oregon City, Happy Valley, Ridgefield, Kelso, Silverton,
Longview, Toutle, Yacolt, Eagle Creek, Boring, Stayton, Kalama,
Creswell, Cape Horn, Rhododendron, Rainier, Welches, Chehalem
Mountain, Carson, Wilsonville, St. Helens, Cottage Grove,
Harrisburg, Corvallis, Hillsboro, Estacada, Brush Prairie,
Skyline Drive, Sylvan Hill, Oakridge, La Center, Lebanon,
Clatskanie, Sheridan, Castle Rock, Battle Ground, Cascade Locks,
Albany, Wyeth, Cherryville, Fairview, Detroit, and Troutdale
208 PM PDT Fri Aug 22 2025
...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 11 PM PDT TUESDAY...
* WHAT...Dangerously hot conditions with high temperatures of
97-103F and overnight low temperatures of 60-70F expected, except
low to mid 70s in the Columbia River Gorge.
* WHERE...Greater Portland/Vancouver Metro, Western and Central
Columbia River Gorge, the Corbett area and the Hood River Valley,
Central and Southern Willamette Valley, Foothills of the Northern
and Central Oregon Cascades, Lower Columbia River and Cowlitz
River Valleys, and South Washington Cascade Foothills.
* WHEN...Until 11 PM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events, especially for those spending time outdoors
or without access to adequate cooling.
* ADDITIONAL DETAILS...Friday, Saturday, and Sunday will be the
hottest days. The warmest overnight lows are expected to occur in
the Columbia River Gorge and in urban areas from Salem northward.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in a cool place during the heat of the
day, stay out of the sunshine, and check up on relatives and
neighbors. For those without air conditioning, use fans to keep air
moving. Keeps windows closed during the day and open at night,
unless air quality is degraded due to wildfire smoke.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1223 PM PDT Fri Aug 22 2025
ORZ041-044-507-508-510-WAZ024-026>029-521-523-232230-
/O.UPG.KPDT.XH.A.0003.250823T1900Z-250828T0400Z/
/O.NEW.KPDT.XH.W.0002.250823T1900Z-250828T0400Z/
Eastern Columbia River Gorge of Oregon-Lower Columbia Basin of
Oregon-Foothills of the Northern Blue Mountains of Oregon-
Foothills of the Southern Blue Mountains of Oregon-North Central
Oregon-Eastern Columbia River Gorge of Washington-Kittitas Valley-
Yakima Valley-Lower Columbia Basin of Washington-Foothills of the
Blue Mountains of Washington-Simcoe Highlands-Lower Slopes of the
Eastern Washington Cascades Crest-
Including the cities of Waitsburg, Dayton, Naches, Boardman,
Yakima, Thorp, Cle Elum, Ellensburg, Athena, Condon, Fossil,
Pendleton, Ione, Pilot Rock, Bickleton, Hermiston, Maupin,
Sunnyside, Walla Walla, Appleton, The Dalles, White Salmon,
Cliffdell, Arlington, Toppenish, Moro, Dufur, Tri-Cities,
Goldendale, Prosser, Heppner, and Connell
1223 PM PDT Fri Aug 22 2025
...EXTREME HEAT WARNING IN EFFECT FROM NOON SATURDAY TO 9 PM PDT
WEDNESDAY...
* WHAT...Dangerously hot conditions with temperatures up to 98 to
104 degrees expected. This will pose a major to locally extreme
risk of heat-related illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...From noon Saturday to 9 PM PDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...An alternative scenario is lingering cloud
cover from possible thunderstorms from southern Oregon may result
in lower than forecast afternoon temperatures or higher than
forecast overnight low temperatures.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit 211info.org for Oregon or
wa211.org for Washington anytime.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1056 AM PDT Fri Aug 22 2025
IDZ026-WAZ032-034-035-041-043-044-047-049-232315-
/O.UPG.KOTX.XH.A.0002.250823T1900Z-250828T0400Z/
/O.NEW.KOTX.XH.W.0003.250823T1900Z-250828T0400Z/
Lewiston Area-Lower Garfield and Asotin Counties-Moses Lake Area-
Upper Columbia Basin-Wenatchee Area-Okanogan Valley-Waterville
Plateau-Central Chelan County-Western Okanogan County-
Including the cities of Othello, Nespelem, Chelan, Plain,
Oroville, Entiat, Harrington, Odessa, Badger Mountain Road,
Quincy, Mansfield, Bridgeport, Number 2 Canyon, Leavenworth,
Conconully, Ritzville, Lapwai, Number 1 Canyon, Lewiston,
Creston, Okanogan, Culdesac, Brewster, Methow, Alpowa Summit,
Pangborn Airport, Mazama, Coulee City, Lewiston Grade, Grand
Coulee, Cashmere, Disautel Pass, Tonasket, Ephrata, Gifford,
Wenatchee, Winthrop, Wilbur, Twisp, Waterville, Moses Lake,
Pomeroy, Loup Loup Pass, Clarkston, Peck, and Omak
1056 AM PDT Fri Aug 22 2025
...EXTREME HEAT WARNING IN EFFECT FROM NOON SATURDAY TO 9 PM PDT
WEDNESDAY...
* WHAT...Hot temperatures. High temperatures 95 to 102 degrees.
Limited overnight relief with low temperatures 65 to 74.
* WHERE...Othello, Nespelem, Chelan, Plain, Oroville, Entiat,
Harrington, Odessa, Badger Mountain Road, Quincy, Mansfield,
Bridgeport, Number 2 Canyon, Leavenworth, Conconully, Ritzville,
Lapwai, Number 1 Canyon, Lewiston, Creston, Okanogan, Culdesac,
Brewster, Methow, Alpowa Summit, Pangborn Airport, Mazama, Coulee
City, Lewiston Grade, Grand Coulee, Cashmere, Disautel Pass,
Tonasket, Ephrata, Gifford, Wenatchee, Winthrop, Wilbur, Twisp,
Waterville, Moses Lake, Pomeroy, Loup Loup Pass, Clarkston, Peck,
and Omak.
* WHEN...From noon Saturday to 9 PM PDT Wednesday.
* IMPACTS...Hot temperatures will increase the risk of heat-related
illnesses. Heat of this magnitude affects anyone without cooling
and hydration as well as health systems and industries.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
