Extreme Heat Warning
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.
&&
$$
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1223 PM PDT Fri Aug 22 2025
ORZ050-509-232230-
/O.NEW.KPDT.HT.Y.0006.250823T1900Z-250825T0400Z/
Wallowa County-East Slopes of the Oregon Cascades-
Including the cities of La Pine, Camp Sherman, Wallowa, Sisters,
Joseph, Sunriver, and Enterprise
1223 PM PDT Fri Aug 22 2025
...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 9 PM PDT SUNDAY...
* WHAT...Hot conditions with temperatures up to 95 degrees expected.
This will pose a moderate risk of heat-related illness.
* WHERE...East Slopes of the Oregon Cascades and Wallowa County.
* WHEN...From noon Saturday to 9 PM PDT Sunday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...An alternative scenario is lingering cloud
cover from possible thunderstorms from southern Oregon may result
in lower than forecast afternoon temperatures or higher than
forecast overnight low temperatures.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances.
Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
For sheltering information and other human services in your area,
dial 2 1 1 during business hours or visit 211info.org for Oregon or
wa211.org for Washington anytime.
&&
$$
BL
URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
1056 AM PDT Fri Aug 22 2025
IDZ002-003-027-WAZ031-033-036>038-232315-
/O.NEW.KOTX.HT.Y.0006.250823T1900Z-250828T0400Z/
Coeur d`Alene Area-Idaho Palouse-Lewis and Southern Nez Perce
Counties-Northeast Blue Mountains-Washington Palouse-Spokane Area-
Northeast Mountains-Okanogan Highlands-
Including the cities of Post Falls, Kamiah, Soldiers Meadow Road,
Peola, Davenport, Worley, Craigmont, Sherman Pass, Anatone,
Airway Heights, Boulder Creek Road, Metaline Falls, Colfax,
Moscow, Genesee, La Crosse, Metaline, Republic, Tiger, Tekoa,
Plummer, Coeur d`Alene, Uniontown, Flowery Trail Road, Cloverland
Road, Deer Park, Rosalia, Chewelah, Fruitland, Colville, Newport,
Kettle Falls, Springdale-Hunters Road, Chesaw Road, Inchelium,
Orin-Rice Road, Oakesdale, Mountain Road, Highway 20 Wauconda
Summit, Nezperce, Wauconda, Spokane Valley, Potlatch, Winchester,
Rockford, Downtown Spokane, Pullman, Hayden, Northport, Ione,
Cheney, and Fairfield
1056 AM PDT Fri Aug 22 2025
...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 9 PM PDT
WEDNESDAY...
* WHAT...Hot temperatures. High temperatures 90 to 99 degrees for
elevations below 3500 feet. High temperatures 80 to 89 degrees for
elevations above 3500 feet. Limited overnight relief with low
temperatures 57 to 65.
* WHERE...Post Falls, Kamiah, Soldiers Meadow Road, Peola,
Davenport, Worley, Craigmont, Sherman Pass, Anatone, Airway
Heights, Boulder Creek Road, Metaline Falls, Colfax, Moscow,
Genesee, La Crosse, Metaline, Republic, Tiger, Tekoa, Plummer,
Coeur d`Alene, Uniontown, Flowery Trail Road, Cloverland Road,
Deer Park, Rosalia, Chewelah, Fruitland, Colville, Newport, Kettle
Falls, Springdale-Hunters Road, Chesaw Road, Inchelium, Orin-Rice
Road, Oakesdale, Mountain Road, Highway 20 Wauconda Summit,
Nezperce, Wauconda, Spokane Valley, Potlatch, Winchester,
Rockford, Downtown Spokane, Pullman, Hayden, Northport, Ione,
Cheney, and Fairfield.
* 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.
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.
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.
&&
$$
JCLEV
URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
1027 AM PDT Fri Aug 22 2025
IDZ007-008-241730-
/O.NEW.KMSO.HT.Y.0007.250823T1900Z-250828T0400Z/
Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region-
1027 AM PDT Fri Aug 22 2025
...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 9 PM PDT
WEDNESDAY...
* WHAT...Major risk of heat effects expected. Temperatures reaching
100 to 107 in the lower valleys, with nighttime temperatures only
dropping into the upper 60s.
* WHERE...Lower Hells Canyon/Salmon River Region and
Orofino/Grangeville Region.
* WHEN...From noon Saturday to 9 PM PDT Wednesday.
* IMPACTS...This level of heat affects anyone without effective
cooling and/or adequate hydration. Impacts likely in some health
systems, heat-sensitive industries and infrastructure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
Air Quality Alert
IDC035-049-232145-
Clearwater-Idaho-
337 PM MDT Fri Aug 22 2025 /237 PM PDT Fri Aug 22 2025/
An Air Quality Alert has been issued by the following agencies:
Idaho Department of Environmental Quality in Lewiston
Nez Perce Tribe ERWM Air Quality Program
* WHAT...Air Quality Advisory due to smoke from wildfires.
Air Quality Index is forecast to be Unhealthy.
* WHERE...Clearwater and Idaho Counties and the Nez Perce
Reservation.
* WHEN...Until Monday morning, August 25th.
* IMPACTS...Those who experience health effects from smoke include
children under 18, elders, pregnant women, people with asthma
or have difficulty breathing, diabetes, heart problems or
otherwise compromised health, and people who have high exposure
(those who work, exercise, or spend extensive time outdoors).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Under the most severe pollution level, sensitive groups should avoid
outdoor exposure and limit indoor activities, and everyone should
restrict their outdoor activities.
Idaho Department of Health and Welfare
https://healthandwelfare.idaho.gov/health-wellness/environmental-
health/idaho-wildfire-and-smoke-information
Idaho Smoke Information Hotline: 1-800-345-1007
Lewiston Regional Office: (208) 799-4370.
$$
IDC057-061-069-251600-
Latah-Lewis-Nez Perce-
Including the cities of Moscow, Potlatch, Deary, Genesee, Juliaetta,
Kendrick, Kamiah, Craigmont, Nezperce, Winchester, Lewiston, Lapwai,
Peck, Culdesac, and Gifford
230 PM PDT Fri Aug 22 2025
An Air Quality Alert has been issued by the following agencies:
Idaho Department of Environmental Quality in Lewiston
Nez Perce Tribe ERWM Air Quality Program
* WHAT...Air Quality Advisory due to smoke from wildfires.
Air Quality Index is forecast to be Unhealthy.
* WHERE...Latah and Nez Perce Counties, and the Nez Perce
Reservation.
* WHEN...Until Monday morning August 25th.
* IMPACTS...Those who experience health effects from smoke include
children under 18, elders, pregnant women, people with asthma
or have difficulty breathing, diabetes, heart problems or
otherwise compromised health, and people who have high exposure
(those who work, exercise, or spend extensive time outdoors).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Under the most severe pollution level, sensitive groups should avoid
outdoor exposure and limit indoor activities, and everyone should
restrict their outdoor activities.
Idaho Department of Health and Welfare
https://healthandwelfare.idaho.gov/health-wellness/environmental-
health/idaho-wildfire-and-smoke-information
Idaho Smoke Information Hotline:
1-800-345-1007
Idaho DEQ Lewiston Regional Office - (208)-799-4370
$$
IDZ007-251600-
Air Quality Alert Message
Nez Perce Tribe ERWM Air Quality Program
Relayed by National Weather Service Missoula MT
1256 PM PDT Fri Aug 22 2025
...AIR QUALITY ADVISORY ISSUED FOR THE NEZ PERCE RESERVATION...
* WHAT...Air Quality Advisory due to smoke from wildfires.
Air Quality Index ranging from Moderate to Very Unhealthy.
* WHERE...All Areas on the Nez Perce Reservation.
* WHEN...Until 09:00 AM PDT Monday, August 25th
* IMPACTS...Those who experience health effects from smoke include
children under 18, elders, pregnant women, people with asthma
or have difficulty breathing, diabetes, heart problems or
otherwise compromised health, and people who have high exposure
(those who work, exercise, or spend extensive time outdoors).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Under the most severe pollution level, sensitive groups should avoid
outdoor exposure and limit indoor activities, and everyone should
restrict their outdoor activities.
Idaho Department of Health and Welfare
https://healthandwelfare.idaho.gov/health-wellness/environmental-
health/idaho-wildfire-and-smoke-information
Idaho Smoke Information Hotline:
1-800-345-1007
&&
LAT...LON 4620 11645 4615 11620 4621 11615 4621 11607
4623 11601 4629 11612 4641 11620 4641 11630
4647 11637 4650 11637 4650 11645 4656 11645
4657 11625 4614 11589 4599 11596 4612 11648
$$
WYZ005-231900-
Southwest Bighorn Basin-
Including the city of Thermopolis
1233 PM MDT Fri Aug 22 2025
...AIR QUALITY ALERT IN EFFECT UNTIL 1 PM MDT THIS AFTERNOON...
The following message is transmitted on behalf of the Wyoming
Department of Environmental Quality, Air Quality Division, and the
Wyoming Department of Health.
* WHAT...Air Quality Alert for Wildfire Smoke.
* WHERE...Hot Springs County, mainly near the Red Canyon Wildfire in
eastern Hot Springs County.
* WHEN...Until 1 PM Friday August 22.
* IMPACTS...Smoke from the Red Canyon Wildfire will result in poor
air quality near the fire. A substantial decrease in smoke
production from this fire has been observed, so the Air Quality
Alert will be allowed to expire at 1 PM this afternoon.
HEALTH INFORMATION...The Wyoming Department of Health recommends
that the elderly, young children, and individuals with respiratory
problems avoid excessive physical exertion and minimize outdoor
activities during this time. Wildfire smoke is made up of a variety
of pollutants, including particulate matter and ozone, which can
cause respiratory health effects. Although these people are most
susceptible to health impacts, the Department of Health also advises
that everyone should avoid prolonged exposure to poor air quality
conditions.
CURRENT CONDITIONS...The Wyoming Department of Environmental
Quality, Air Quality Division offers near real-time air quality data
for Wyoming`s monitoring stations and health effects information to
help the public interpret current conditions. Current air quality
conditions across the state of Wyoming can be found at
http://www.wyvisnet.com/.
$$
IDC059-231600-
Air Quality Alert Message
Idaho Department of Environmental Quality Idaho Falls ID
Relayed by National Weather Service Missoula MT
958 AM MDT Fri Aug 22 2025
...AIR QUALITY ADVISORY FROM THE IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY
FOR Lemhi County...
* WHAT... Air Quality Advisory because of degraded air quality due to
wildfire smoke.
Air Quality Index is forecast to be Unhealthy for Sensitive Groups
*WHERE... Lemhi County
*WHEN... Until 10am MDT 08/25/2025
*IMPACTS... Members of sensitive groups may experience health effects. The
general public is less likely to be affected.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Air pollutants can cause breathing difficult for children, the elderly, as
well as persons with respiratory problems. Those individuals who are
sensitive to increased particulate matter or smoke are encouraged to avoid
prolonged or strenuous outdoor activity during this advisory. Open burning
is prohibited by air quality rule. It is also recommended that all other
individuals limit prolonged or strenuous activity outdoors.
THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY,
AIR QUALITY GROUP
FOR MORE INFORMATION, CONTACT DEQ`s
Idaho Falls Regional Office at (208) 528-2650
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Rapid City SD
303 AM MDT Sat Aug 23 2025
SDZ027-029-041-075-076-WYZ055-058-059-241300-
Southern Foothills-Southern Black Hills-Western Fall River-
Eastern Fall River-Southern Oglala Lakota-Southern Campbell-
Weston County Plains-Newcastle-
303 AM MDT Sat Aug 23 2025
This Hazardous Weather Outlook is for portions of southwestern
South Dakota...the Black Hills of South Dakota...and northeast
Wyoming.
.DAY ONE...Today and Tonight
A few showers and thunderstorms are possible overnight. Severe
storms are not expected.
.DAYS TWO THROUGH SEVEN...Sunday through Friday
A few showers and thunderstorms are possible, but severe storms
are not expected.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today.
&&
Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity
$$
Hazardous Weather Outlook
National Weather Service Riverton WY
103 AM MDT Sat Aug 23 2025
WYZ001>020-022>030-241300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
103 AM MDT Sat Aug 23 2025
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and Tonight.
Isolated showers and thunderstorms possible in and near the
mountains today.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Daily chances for showers and thunderstorms, with increasing
moisture on Monday. Wednesday and Thursday look like the most
active days at this point.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
