Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1202 PM PDT Mon Sep 1 2025
ORZ041-044-507-508-510-WAZ024-026>029-521-022215-
/O.UPG.KPDT.XH.A.0004.250902T1800Z-250905T0300Z/
/O.NEW.KPDT.XH.W.0003.250902T1800Z-250905T0300Z/
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-
Including the cities of Ione, Ellensburg, Moro, Maupin, Pilot
Rock, Condon, Sunnyside, Arlington, Toppenish, Tri-Cities,
Heppner, Hermiston, Thorp, Naches, Prosser, Boardman, White
Salmon, Goldendale, Pendleton, Dayton, Dufur, Connell, Athena,
The Dalles, Yakima, Waitsburg, Fossil, Walla Walla, and Bickleton
1202 PM PDT Mon Sep 1 2025
...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT
THURSDAY...
* WHAT...Dangerously hot conditions with temperatures up to 100
degrees expected. This will pose a major risk of heat-related
illness.
* WHERE...Portions of north central and northeast Oregon and
central, south central, and southeast Washington.
* WHEN...From 11 AM Tuesday to 8 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Daily high temperature records are at risk
for many cities in the warning area Tuesday through Thursday.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1140 AM PDT Mon Sep 1 2025
WAZ041-043-022000-
/O.NEW.KOTX.XH.W.0004.250902T1800Z-250905T0300Z/
/O.EXT.KOTX.HT.Y.0007.000000T0000Z-250902T1800Z/
Wenatchee Area-Okanogan Valley-
Including the cities of Oroville, Chelan, Brewster, Okanogan,
Number 1 Canyon, Wenatchee, Omak, Nespelem, Pangborn Airport,
Number 2 Canyon, Entiat, Cashmere, Bridgeport, Tonasket, and
Disautel Pass
1140 AM PDT Mon Sep 1 2025
...HEAT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT TUESDAY...
...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT
THURSDAY...
* WHAT...For the Heat Advisory, high temperatures 92 to 99 degrees.
For the Extreme Heat Warning, dangerously hot conditions with high
temperatures 97 to 105 degrees.
* WHERE...Oroville, Chelan, Brewster, Okanogan, Number 1 Canyon,
Wenatchee, Omak, Nespelem, Pangborn Airport, Number 2 Canyon,
Entiat, Cashmere, Bridgeport, Tonasket, and Disautel Pass.
* WHEN...For the Heat Advisory, until 11 AM PDT Tuesday. For the
Extreme Heat Warning, from 11 AM Tuesday to 8 PM PDT Thursday.
* IMPACTS...Hot temperatures will increase the risk of heat-related
illnesses. Heat Risk of this magnitude impacts almost everyone who
does not have access to adequate cooling or hydration.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Seattle WA
1225 PM PDT Mon Sep 1 2025
WAZ305>309-020330-
/O.NEW.KSEW.HT.Y.0006.250902T1900Z-250905T0000Z/
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 South Hill, Sudden Valley, Eastgate, Morton, Monroe,
Maple Valley, Prairie Ridge, Granite Falls, Sahalee, Darrington,
Mossyrock, Covington-Sawyer-w, Enumclaw, Duvall, Lea Hill,
Mirrormont, North Bend, Pine Lake, and Elk Plain
1225 PM PDT Mon Sep 1 2025
...HEAT ADVISORY IN EFFECT FROM NOON TUESDAY TO 5 PM PDT THURSDAY...
* WHAT...Hot conditions with high temperatures ranging from the
upper 80s to the mid 90s and low temperatures in the 60s and lower
70s. This will pose a moderate to locally 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...From noon Tuesday to 5 PM PDT Thursday.
* IMPACTS...Heat will significantly increase the risk of
heat-related illnesses for those who are sensitive to heat,
especially those without effective cooling or adequate hydration.
* ADDITIONAL DETAILS...The hottest temperatures will primarily be
focused in the Cascade valleys, where temperatures in the mid 90s
can be expected. The overnight lows will remain very warm and
provide little to no relief, especially in locations such as
Packwood, Marblemount, and Darrington.
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.
&&
$$
28
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1202 PM PDT Mon Sep 1 2025
ORZ049-502-505-511-WAZ030-523-022215-
/O.NEW.KPDT.HT.Y.0008.250902T1800Z-250903T0300Z/
Grande Ronde Valley-Northern Blue Mountains of Oregon-John Day
Basin-Central Oregon-Northwest Blue Mountains-Lower Slopes of the
Eastern Washington Cascades Crest-
Including the cities of Cle Elum, Cove, Spray, Redmond, Dayville,
Mitchell, Appleton, Union, Elgin, La Grande, Tollgate, Meacham,
Ski Bluewood Resort, John Day, Cliffdell, Monument, Madras, Bend,
and Prineville
1202 PM PDT Mon Sep 1 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM PDT TUESDAY...
* WHAT...Hot conditions with temperatures up to 97 degrees expected.
This will pose a moderate to major risk of heat-related illness.
* WHERE...In Oregon, Central Oregon, John Day Basin, Grande Ronde
Valley, and Northern Blue Mountains of Oregon. In Washington,
Lower Slopes of the Eastern Washington Cascades Crest and
Northwest Blue Mountains.
* WHEN...From 11 AM to 8 PM PDT Tuesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
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.
&&
$$
LN
URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1140 AM PDT Mon Sep 1 2025
WAZ041-043-022000-
/O.NEW.KOTX.XH.W.0004.250902T1800Z-250905T0300Z/
/O.EXT.KOTX.HT.Y.0007.000000T0000Z-250902T1800Z/
Wenatchee Area-Okanogan Valley-
Including the cities of Oroville, Chelan, Brewster, Okanogan,
Number 1 Canyon, Wenatchee, Omak, Nespelem, Pangborn Airport,
Number 2 Canyon, Entiat, Cashmere, Bridgeport, Tonasket, and
Disautel Pass
1140 AM PDT Mon Sep 1 2025
...HEAT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT TUESDAY...
...EXTREME HEAT WARNING IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT
THURSDAY...
* WHAT...For the Heat Advisory, high temperatures 92 to 99 degrees.
For the Extreme Heat Warning, dangerously hot conditions with high
temperatures 97 to 105 degrees.
* WHERE...Oroville, Chelan, Brewster, Okanogan, Number 1 Canyon,
Wenatchee, Omak, Nespelem, Pangborn Airport, Number 2 Canyon,
Entiat, Cashmere, Bridgeport, Tonasket, and Disautel Pass.
* WHEN...For the Heat Advisory, until 11 AM PDT Tuesday. For the
Extreme Heat Warning, from 11 AM Tuesday to 8 PM PDT Thursday.
* IMPACTS...Hot temperatures will increase the risk of heat-related
illnesses. Heat Risk of this magnitude impacts almost everyone who
does not have access to adequate cooling or hydration.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1140 AM PDT Mon Sep 1 2025
IDZ003-027-WAZ033-038-047-049-022000-
/O.EXT.KOTX.HT.Y.0007.250901T1840Z-250905T0300Z/
Idaho Palouse-Lewis and Southern Nez Perce Counties-Washington
Palouse-Okanogan Highlands-Central Chelan County-Western Okanogan
County-
Including the cities of Moscow, Uniontown, Sherman Pass,
Republic, Winthrop, Boulder Creek Road, Leavenworth, Pullman,
Chesaw Road, Tekoa, Methow, Nezperce, Conconully, Soldiers Meadow
Road, Twisp, Potlatch, La Crosse, Wauconda, Winchester, Kamiah,
Colfax, Plain, Mazama, Rosalia, Oakesdale, Inchelium, Craigmont,
Genesee, Loup Loup Pass, Plummer, and Highway 20 Wauconda Summit
1140 AM PDT Mon Sep 1 2025
...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...
* WHAT...Hot temperatures. High temperatures 95 to 103 degrees.
Limited overnight relief with low temperatures 58 to 65 degrees.
* WHERE...Moscow, Uniontown, Sherman Pass, Republic, Winthrop,
Boulder Creek Road, Leavenworth, Pullman, Chesaw Road, Tekoa,
Methow, Nezperce, Conconully, Soldiers Meadow Road, Twisp,
Potlatch, La Crosse, Wauconda, Winchester, Kamiah, Colfax, Plain,
Mazama, Rosalia, Oakesdale, Inchelium, Craigmont, Genesee, Loup
Loup Pass, Plummer, and Highway 20 Wauconda Summit.
* WHEN...Until 8 PM PDT Thursday.
* IMPACTS...Hot temperatures will increase the risk of heat-related
illnesses. Heat Risk of this magnitude impacts almost everyone who
does not have access to adequate cooling or hydration.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
