Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
421 AM PDT Tue Aug 19 2025
AZZ001>003-036-CAZ520-522>527-NVZ015>017-020>022-201500-
/O.CON.KVEF.XH.W.0009.250820T1500Z-250824T0600Z/
Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts-
Lake Mead National Recreation Area-Owens Valley-Death Valley
National Park-Western Mojave Desert-Eastern Mojave Desert-Morongo
Basin-Cadiz Basin-San Bernardino County-Upper Colorado River
Valley-Lincoln County-Northeast Clark County-Western Clark and
Southern Nye County-Las Vegas Valley-Lake Mead National
Recreation Area-Southern Clark County-
Including the cities of Shoshone, Yucca, Pahrump, Baker,
Twentynine Palms, Mountain Pass, Bullhead City, Mesquite, Furnace
Creek, Vidal Junction, Pioche, Desert Rock, Bishop, Lone Pine,
Laughlin, North Las Vegas, Overton, Pipe Spring National
Monument, Oatman, Las Vegas, Alamo, Stovepipe Wells, Mitchell
Caverns, Valentine, Topock, Mt Trumbull, Hoover Dam, Barstow,
Moapa, Searchlight, Desert Hills, Wikieup, Morongo Valley,
Needles, Panaca, Dolan Springs, Olancha, Western Grand Canyon,
Cal-Nev-Ari, Mohave Valley, Yucca Valley, Indian Springs,
Kingman, Hiko, Rachel, Boulder City, Lake Havasu City, Amargosa
Valley, Tuweep, Henderson, Daggett, Primm, Independence, Fort
Irwin, Caliente, Golden Valley, and Colorado City
421 AM PDT Tue Aug 19 2025 /421 AM MST Tue Aug 19 2025/
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 8 AM PDT /8 AM MST/
WEDNESDAY TO 11 PM PDT /11 PM MST/ SATURDAY...
* WHAT...Dangerously hot conditions with temperatures around 105 in
Kingman, Golden Valley, Dolan Springs; around 110 in Las Vegas,
Pahrump, Barstow, Yucca Valley, Twentynine Palms; around 115 in
Laughlin, Bullhead City, Needles, Lake Havasu City; around 120 at
Furnace Creek in Death Valley National Park. Expect minimal
overnight relief. Major-to-Extreme Heat Risk. In the Owens Valley,
temperatures will be around 100 to 105, yielding Moderate Heat
Risk.
* WHERE...Portions of northwest Arizona, southeast California, and
south central and southern Nevada.
* WHEN...From 8 AM PDT /8 AM MST/ Wednesday to 11 PM PDT /11 PM MST/
Saturday.
* 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.
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.
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.
Monitor the latest forecasts and warnings for updates.
&&
$$
Red Flag Warning
URGENT - FIRE WEATHER MESSAGE
National Weather Service Elko NV
1251 AM PDT Tue Aug 19 2025
NVZ427-438-469-191800-
/O.CON.KLKN.FW.W.0015.250819T1800Z-250820T0500Z/
Central Nevada-Toiyabe-
W Elko County, N Eureka and Lander Counties N of I80-
Central Elko County-
1251 AM PDT Tue Aug 19 2025
...A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING
UNTIL 10 PM PDT THIS EVENING FOR LOW RELATIVE HUMIDITY VALUES AND
GUSTY WINDS FOR FIRE WEATHER ZONES 427, 438, AND 469...
* AFFECTED AREA...Fire weather zones 427, 438, and 469.
* WIND...Sustained south to southwest winds 15 to 20 mph, with
gusts near 30 mph.
* HUMIDITY...Minimum relative humidity values as low as 6
percent.
* IMPACTS...Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity values, and warm temperatures
can contribute to extreme fire behavior.
&&
$$
BS
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
421 AM PDT Tue Aug 19 2025
NVZ014-018-019-201500-
/O.CON.KVEF.HT.Y.0003.250820T1500Z-250824T0600Z/
Esmeralda and Central Nye County-Sheep Range-Spring Mountains-Red
Rock Canyon-
Including the cities of Hayford Pk, Mt Charleston, Red Rock
Canyon, Goldfield, Beatty, Dyer, and Silver Peak
421 AM PDT Tue Aug 19 2025
...HEAT ADVISORY REMAINS IN EFFECT FROM 8 AM WEDNESDAY TO 11 PM PDT
SATURDAY...
* WHAT...Above-normal temperatures with afternoon highs in the
low-to-mid 80s for Mount Charleston, Lee Canyon, and Kyle Canyon.
Above-normal temperatures with afternoon highs between 95 and 100
for Goldfield; Tonopah; between 100 and 105 for Beatty. Expect
minimal overnight recovery. Moderate-to-High Heat Risk.
* WHERE...Esmeralda and Central Nye County, Sheep Range, and Spring
Mountains-Red Rock Canyon.
* WHEN...From 8 AM Wednesday to 11 PM PDT Saturday.
* 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.
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.
Monitor the latest forecasts and warnings for updates.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/lasvegas
MS
Extreme Heat Watch
URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
1237 AM MDT Tue Aug 19 2025
UTZ123-124-200045-
/O.NEW.KSLC.XH.A.0001.250821T1800Z-250822T0300Z/
Lower Washington County-Zion National Park-
Including the following locations - Hurricane, Ivins, St George,
and Springdale
1237 AM MDT Tue Aug 19 2025
...EXTREME HEAT WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
THURSDAY EVENING...
* WHAT...Dangerously hot conditions with temperatures up to 108
possible. Overnight temperatures in the upper 70s to low 80s will
prolong heat stress to those without proper cooling.
* WHERE...Lower Washington County and Zion National Park.
* WHEN...From Thursday afternoon through Thursday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Monitor the latest forecasts and warnings for updates.
&&
$$
For more information from the National Weather Service visit
https://weather.gov/saltlakecity.
For information on potential travel impacts visit
http://udottraffic.utah.gov
CRK
Air Quality Alert
NVZ038-201730-
Southwest Elko-
Including the cities of Elko, Ryndon, Jiggs, Lamoille, Lee,
South Fork, and Spring Creek
1021 AM PDT Tue Aug 19 2025
...AIR QUALITY ALERT IN EFFECT UNTIL 5 AM PDT WEDNESDAY...
An Air Quality Action Day has been forecast for southwest Elko
County for elevated particulate matter levels. These levels are
anticipated to be Orange/unhealthy for sensitive groups, and a Air
Quality Alert is in effect until tomorrow morning.
Particulate matter levels are expected to be unhealthy for sensitive
groups. For additional information, please visit the EPA AIRNOW web
site at www.airnow.gov and click on Nevada.
Please note: These data are preliminary and have not been validated.
Data is provided as a service from the Nevada Division of
Environmental Protection and are not intended to replace medical
advice. If you have questions about your health, please contact your
local health department and/or your health care provider.
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Grand Junction CO
257 AM MDT Tue Aug 19 2025
COZ001>014-017>023-UTZ022>025-027>029-200900-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
257 AM MDT Tue Aug 19 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Isolated terrain-based storms are possible this afternoon. Storms
will be capable of producing gusty outflow winds up to 40 mph. Near
record high temperatures expected.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Isolated thunderstorm chances continue over the higher terrain
before increasing in coverage Thursday and beyond.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
