Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Salt Lake City UT
135 PM MDT Sat Jul 12 2025
UTZ123-131045-
/O.NEW.KSLC.XH.W.0001.250714T1800Z-250715T0400Z/
Lower Washington County-
Including the following locations - Hurricane, Ivins, and St
George
135 PM MDT Sat Jul 12 2025
...EXTREME HEAT WARNING IN EFFECT FROM NOON TO 10 PM MDT MONDAY...
* WHAT...Dangerously hot conditions with limited overnight recovery.
Afternoon high temperatures around 110, with overnight lows
struggling to dip below 80.
* WHERE...Lower Washington County.
* WHEN...From noon to 10 PM MDT Monday.
* 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.
&&
$$
For more information from the National Weather Service visit
https://weather.gov/saltlakecity.
For information on potential travel impacts visit
http://udottraffic.utah.gov
DVC
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
1221 PM PDT Sat Jul 12 2025
AZZ036-CAZ522-NVZ016-017-020>022-130730-
/O.NEW.KVEF.XH.W.0006.250714T1800Z-250715T0400Z/
Lake Mead National Recreation Area-Death Valley National Park-
Northeast Clark County-Western Clark and Southern Nye County-Las
Vegas Valley-Lake Mead National Recreation Area-Southern Clark
County-
Including the cities of Laughlin, Furnace Creek, Searchlight,
Oatman, Overton, Indian Springs, Henderson, North Las Vegas, Las
Vegas, Moapa, Stovepipe Wells, Amargosa Valley, Desert Rock,
Pahrump, Hoover Dam, Cal-Nev-Ari, Primm, Shoshone, Bullhead City,
Mohave Valley, Boulder City, and Mesquite
1221 PM PDT Sat Jul 12 2025 /1221 PM MST Sat Jul 12 2025/
...EXTREME HEAT WARNING IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 9 PM
PDT /9 PM MST/ MONDAY...
* WHAT...In Las Vegas and Moapa, highs between 110 and 115. In Death
Valley, highs between 120 and 125. In Amargosa Valley, Pahrump,
and Indian Springs, highs between 105 and 115. In the Colorado
River Valley, highs between 110 and 120.
* WHERE...Lake Mead National Recreation Area, Death Valley National
Park, Northeast Clark County, Western Clark and Southern Nye
County, Las Vegas Valley, and Southern Clark County.
* WHEN...From 11 AM PDT/MST to 9 PM PDT/MST Monday.
* 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
422 AM MST Sat Jul 12 2025
AZZ006-170200-
/O.EXT.KFGZ.XH.W.0003.000000T0000Z-250717T0200Z/
Grand Canyon Country-
Including the cities of Supai, Grand Canyon Village, and North
Rim
422 AM MST Sat Jul 12 2025
...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 7 PM MST WEDNESDAY BELOW
4000 FEET...
* WHAT...Dangerously hot conditions below 4000 feet, with daytime
temperatures ranging from 105 degrees at Havasupai Gardens, to 116
degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...Until 7 PM MST Wednesday.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This warning is reserved for only the hottest days of the year and
is issued when temperatures are expected to rise to dangerous levels.
Day hikers on Bright Angel Trail should descend no farther than 1
1/2 miles from the upper trailhead. Between the hours of 10 AM and 4
PM, hikers should be out of the canyon or at Havasupai Gardens or
Bright Angel campgrounds, physical activity is discouraged. All
hikers should have adequate gear, including a wide-brimmed hat,
sunscreen, salty snacks, sufficient water, and electrolyte mix.
Doubling your calorie intake helps maintain your energy.
Hike smart.
&&
$$
McCollum
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service Hanford CA
1035 PM PDT Sat Jul 12 2025
CAZ300>322-324-325-332-131400-
/O.CON.KHNX.HT.Y.0002.000000T0000Z-250716T0600Z/
West Side Mountains north of 198-Los Banos - Dos Palos-Merced -
Madera - Mendota-Planada - Le Grand - Snelling-Coalinga - Avenal-
West Side of Fresno and Kings Counties-Caruthers - San Joaquin -
Selma-Fresno-Clovis-West Side Mountains South of 198-Buttonwillow
- Lost Hills - I5-Delano-Wasco-Shafter-Hanford - Corcoran -
Lemoore-Visalia - Porterville - Reedley-Buena Vista-Bakersfield-
Southeast San Joaquin Valley-South End San Joaquin Valley-
Mariposa Madera Foothills-Mariposa-Madera Lower Sierra-Fresno-
Tulare Foothills-Fresno-Tulare Lower Sierra-South End Sierra
Foothills-South End of the Lower Sierra-Yosemite Valley-San
Joaquin River Canyon-Kern River Valley-
Including the cities of Le Grand, Atwater, Kernville,
Bakersfield, Oakhurst, Lemoore Station, Selma, Parlier, El
Portal, Auberry, Blackwells Corner, Sanger, Camp Nelson,
Corcoran, Hanford, Kingsburg, Visalia, Kettleman City, Yosemite
Valley, Fish Camp, Millerton Lake, Alpaugh, Los Banos, Tulare,
Wasco, Mariposa, Arvin, Avenal, Taft, Merced, Lemoore, Shafter,
Richgrove, San Luis Reservoir, Goshen, Lake Isabella,
Buttonwillow, Lamont, Kerman, Delano, Fresno, North Fork,
Planada, Porterville, Coarsegold, McKittrick, Lake Mcclure,
Madera, Lost Hills, Coalinga, Bass Lake, and Five Points
1035 PM PDT Sat Jul 12 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY...
* WHAT...High temperatures up to 104.
* WHERE...A portion of central California.
* WHEN...Until 11 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.
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.
&&
$$
EW
URGENT - WEATHER MESSAGE
National Weather Service Elko NV
742 PM PDT Sat Jul 12 2025
NVZ030-033-036>038-040-041-131500-
/O.CON.KLKN.HT.Y.0005.250713T1800Z-250716T0400Z/
Humboldt-Southeastern Elko-Northern Lander and Northern Eureka-
Southern Lander and Southern Eureka-Southwest Elko-Northwestern
Nye-Northeastern Nye-
Including the cities of Diamond Valley, Manhattan, Elko, Ryndon,
Spring Creek, Garden Pass, Valmy, Eureka, Dufferena, Pinto
Summit, Argenta, Hickison Summit, South Fork, Beowawe, Eureka
Airport, Grass Valley, West Wendover, Palisade, Tonopah, Emigrant
Pass, Crescent Valley, Blue Eagle Ranch, Round Mountain, Battle
Mountain, Golconda, Duckwater, Lee, Lamoille, Winnemucca, Dunphy,
and Jiggs
742 PM PDT Sat Jul 12 2025
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 9 PM PDT
TUESDAY...
* WHAT...High temperatures of 95 to 104 degrees in the valleys.
* WHERE...Northern Lander and Northern Eureka, Southern Lander and
Southern Eureka, Southeastern Elko, Southwest Elko, Humboldt,
Northeastern Nye, and Northwestern Nye Counties.
* WHEN...From 11 AM Sunday to 9 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.
&&
$$
98
URGENT - WEATHER MESSAGE
National Weather Service Reno NV
257 PM PDT Sat Jul 12 2025
CAZ070-NVZ001-003>005-140000-
/O.CON.KREV.HT.Y.0002.000000T0000Z-250716T1800Z/
Greater Reno-Carson City-Minden Area-Western Nevada Basin and
Range including Pyramid Lake-Northern Washoe County-Surprise
Valley California-Mineral and Southern Lyon Counties-
Including the cities of Mina, Verdi, Schurz, Cedarville,
Eagleville, Nixon, Empire, Silver Springs, Smith Valley, Fort
Bidwell, Yerington, Virginia City, Sparks, Gerlach, Fallon,
Imlay, Lovelock, Gardnerville, Hawthorne, and Fernley
257 PM PDT Sat Jul 12 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT WEDNESDAY...
* WHAT...High temperatures of 98-106 degrees expected in lower
elevations Sunday and Monday with overnight low temperatures in
the mid 60s to lower 70s, resulting in widespread Major HeatRisk.
Tuesday may not be quite as hot, but some valley sites could still
see highs near or above 100 degrees.
* WHERE...In California, Surprise Valley California. In Nevada,
Northern Washoe County, Western Nevada Basin and Range including
Pyramid Lake, Greater Reno-Carson City-Minden Area, and Mineral
and Southern Lyon Counties.
* WHEN...Until 11 AM PDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
heat events, particularly for those working or participating in
outdoor activities.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
1221 PM PDT Sat Jul 12 2025
NVZ014-015-130730-
/O.NEW.KVEF.HT.Y.0001.250714T1800Z-250715T0400Z/
Esmeralda and Central Nye County-Lincoln County-
Including the cities of Dyer, Hiko, Alamo, Rachel, Pioche, Silver
Peak, Beatty, Panaca, Caliente, and Goldfield
1221 PM PDT Sat Jul 12 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM TO 9 PM PDT MONDAY...
* WHAT...Afternoon high temperatures between 100 and 110 in the
valleys.
* WHERE...Esmeralda and Central Nye County and Lincoln County.
* WHEN...From 11 AM to 9 PM PDT Monday.
* 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
SM
