Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Elko NV
156 PM PDT Fri Aug 22 2025
NVZ030-031-036-038-039-231500-
/O.CON.KLKN.HT.Y.0007.000000T0000Z-250823T0300Z/
/O.CON.KLKN.HT.Y.0008.250823T1800Z-250824T0300Z/
Humboldt-Northern Elko-Northern Lander and Northern Eureka-
Southwest Elko-South Central Elko-
Including the cities of Ryndon, Jarbidge, Palisade, Battle
Mountain, Dunphy, Oasis, Valmy, South Fork, Crescent Valley,
Mountain City, Dufferena, Beowawe, Elko, Winnemucca, Spring
Creek, Jiggs, Midas, Emigrant Pass, Argenta, Lee, Owyhee,
Charleston, Lamoille, Gibbs Ranch, Golconda, Tuscarora, and Ruby
Lake
156 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM PDT SATURDAY...
* WHAT...High temperatures 97 to 102 degrees expected in the valleys.
* WHERE...Northern Lander and Northern Eureka, Northern Elko, South
Central Elko, Southwest Elko, and Humboldt Counties.
* WHEN...For the first Heat Advisory, until 8 PM PDT this evening.
For the second Heat Advisory, from 11 AM to 8 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, remain out
of the sun, and check 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Elko NV
156 PM PDT Fri Aug 22 2025
NVZ033-231500-
/O.CON.KLKN.HT.Y.0008.250823T1800Z-250824T0300Z/
Southeastern Elko-
Including the cities of West Wendover
156 PM PDT Fri Aug 22 2025
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM PDT SATURDAY...
* WHAT...High temperatures 96 to 101 degrees expected in the valleys.
* WHERE...Southeastern Elko County.
* WHEN...From 11 AM to 8 PM PDT Saturday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, remain out
of the sun, and check on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
&&
$$
90
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.
&&
$$
BL
URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
1027 AM PDT Fri Aug 22 2025
IDZ007-008-241730-
/O.NEW.KMSO.HT.Y.0007.250823T1900Z-250828T0400Z/
Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region-
1027 AM PDT Fri Aug 22 2025
...HEAT ADVISORY IN EFFECT FROM NOON SATURDAY TO 9 PM PDT
WEDNESDAY...
* WHAT...Major risk of heat effects expected. Temperatures reaching
100 to 107 in the lower valleys, with nighttime temperatures only
dropping into the upper 60s.
* WHERE...Lower Hells Canyon/Salmon River Region and
Orofino/Grangeville Region.
* WHEN...From noon Saturday to 9 PM PDT Wednesday.
* IMPACTS...This level of heat affects anyone without effective
cooling and/or adequate hydration. Impacts likely in some health
systems, heat-sensitive industries and infrastructure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
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.
$$
WYZ014-025-026-251900-
Wind River Mountains West-Upper Green River Basin Foothills-
Upper Green River Basin-
Including the cities of Pinedale, La Barge, Big Piney, and Farson
107 PM MDT Fri Aug 22 2025
...AIR QUALITY ALERT IN EFFECT UNTIL 1 PM MDT SATURDAY...
The following message is transmitted on behalf of the Wyoming
Department of Environmental Quality, Air Quality Division, and the
Wyoming Department of Health.
* WHAT...Air Quality Alert for Wildfire Smoke.
* WHERE...Upper Green River Basin and Western Wind River Mountains.
This includes the towns of, Pinedale, Big Piney/Marbleton, Hoback,
and Farson.
* WHEN...1 PM Friday August 22 until 1 PM Monday August 25.
* IMPACTS...Smoke from the Dollar Lake Wildfire continues to be
observed across portions of western and central Wyoming. The smoke
is limiting visibilities at times, especially at higher elevations
in the Wind River Mountains.
HEALTH INFORMATION...The Wyoming Department of Health recommends
that the elderly, young children, and individuals with respiratory
problems avoid excessive physical exertion and minimize outdoor
activities during this time. Wildfire smoke is made up of a variety
of pollutants, including particulate matter and ozone, which can
cause respiratory health effects. Although these people are most
susceptible to health impacts, the Department of Health also advises
that everyone should avoid prolonged exposure to poor air quality
conditions.
CURRENT CONDITIONS...The Wyoming Department of Environmental
Quality, Air Quality Division offers near real-time air quality data
for Wyoming`s monitoring stations and health effects information to
help the public interpret current conditions. Current air quality
conditions across the state of Wyoming can be found at
http://www.wyvisnet.com/.
$$
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
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
202 AM MDT Fri Aug 22 2025
WYZ001>020-022>030-231300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
202 AM MDT Fri Aug 22 2025
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Showers and thunderstorms are possible today. Hazards include
lightning, gusty outflow winds 30 to 50 mph, and hail. Strongest
storms are most likely for central Wyoming locations.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Cool temperatures, with daily chances for showers and thunderstorms.
Increasing moisture starts Monday.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
