Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Hanford CA
647 AM PDT Thu Aug 21 2025
CAZ300-304-307-308-313-314-316-317-319-321-212200-
/O.CON.KHNX.XH.W.0002.250822T1800Z-250824T1500Z/
West Side Mountains north of 198-Coalinga - Avenal-Fresno-Clovis-
West Side Mountains South of 198-Buena Vista-Bakersfield-South
End San Joaquin Valley-Mariposa Madera Foothills-Fresno-Tulare
Foothills-South End Sierra Foothills-
Including the cities of Avenal, McKittrick, Fresno, San Luis
Reservoir, Taft, El Portal, Millerton Lake, Coalinga, Arvin,
Mariposa, Blackwells Corner, Bakersfield, and Lamont
647 AM PDT Thu Aug 21 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM FRIDAY TO 8 AM
PDT SUNDAY...
* WHAT...Dangerously hot conditions with high temperatures up to 105
expected. Warm overnight lows in the mid 70s to lower 80s from
Friday until Sunday morning.
* WHERE...Bakersfield, Buena Vista, Coalinga - Avenal,
Fresno-Clovis, Fresno-Tulare Foothills, Mariposa Madera Foothills,
South End San Joaquin Valley, South End Sierra Foothills, West
Side Mountains South of 198, and West Side Mountains north of 198.
* WHEN...From 11 AM Friday to 8 AM PDT Sunday.
* 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.
Stay cool, stay hydrated, stay informed.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Hanford CA
647 AM PDT Thu Aug 21 2025
CAZ337>339-212200-
/O.CON.KHNX.XH.W.0002.250821T1800Z-250824T1500Z/
Indian Wells Valley-Mojave Desert Slopes-Mojave Desert-
Including the cities of California City, Ridgecrest, Edwards AFB,
Mojave, Rosamond, Randsburg, and Inyokern
647 AM PDT Thu Aug 21 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 AM PDT SUNDAY...
* WHAT...Dangerously hot conditions with high temperatures 105 to
110 degrees possible. Warm overnight lows in the mid 70s to lower
80s from this morning until Sunday morning.
* WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert
Slopes.
* WHEN...From 11 AM this morning to 8 AM PDT Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
245 AM PDT Thu Aug 21 2025
CAZ060-212230-
/O.CON.KSGX.XH.W.0003.000000T0000Z-250824T0300Z/
Apple and Lucerne Valleys-
Including the cities of Apple Valley, Hesperia, Lucerne Valley,
and Victorville
245 AM PDT Thu Aug 21 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY...
* WHAT...Dangerously hot conditions with temperatures up to 108.
* WHERE...Apple and Lucerne Valleys.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Today and Friday are expected to be the
hottest days.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
239 AM PDT Thu Aug 21 2025
AZZ001>003-036-CAZ520-522>527-NVZ015>017-020>022-220900-
/O.CON.KVEF.XH.W.0009.000000T0000Z-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 Caliente, Baker, Valentine, Primm,
Boulder City, Wikieup, Yucca, Mitchell Caverns, Morongo Valley,
Laughlin, North Las Vegas, Panaca, Pahrump, Bullhead City,
Henderson, Pioche, Shoshone, Lone Pine, Kingman, Moapa, Oatman,
Needles, Olancha, Colorado City, Mesquite, Yucca Valley, Vidal
Junction, Stovepipe Wells, Indian Springs, Alamo, Topock, Fort
Irwin, Tuweep, Twentynine Palms, Mountain Pass, Western Grand
Canyon, Desert Hills, Bishop, Lake Havasu City, Amargosa Valley,
Independence, Daggett, Desert Rock, Mt Trumbull, Overton,
Cal-Nev-Ari, Hiko, Golden Valley, Barstow, Hoover Dam, Dolan
Springs, Mohave Valley, Furnace Creek, Pipe Spring National
Monument, Las Vegas, Rachel, and Searchlight
239 AM PDT Thu Aug 21 2025 /239 AM MST Thu Aug 21 2025/
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 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...Until 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
157 AM PDT Thu Aug 21 2025
CAZ038-088-342>345-348-353-369-371>383-548-220900-
/O.CON.KLOX.XH.W.0002.250821T1800Z-250824T0400Z/
Cuyama Valley-Santa Clarita Valley-Santa Lucia Mountains-Southern
Salinas Valley-San Luis Obispo County Interior Valleys-San Luis
Obispo County Mountains-Santa Ynez Valley-Santa Barbara County
Interior Mountains-Western Santa Monica Mountains Recreational
Area-Calabasas and Agoura Hills-Western San Fernando Valley-
Eastern San Fernando Valley-Southeastern Ventura County Valleys-
Santa Susana Mountains-Southern Ventura County Mountains-Northern
Ventura County Mountains-Interstate 5 Corridor-Western San
Gabriel Mountains and Highway 14 Corridor-Eastern San Gabriel
Mountains-Western Antelope Valley Foothills-Eastern Antelope
Valley Foothills-Antelope Valley-Los Angeles County San Gabriel
Valley-
Including the cities of Mill Creek, Chatsworth, Mount Baldy,
Sunland, Creston, La Canada Flintridge, Topatopa Mountains,
Palmdale, Valencia, San Gabriel, Northridge, Burbank, Los Olivos,
Malibu Bowl, Big Pine Mountain, Gorman, Newbury Park, Hearst
Castle, Atascadero, Lake Los Angeles, Lake Castaic, Van Nuys,
Llano, Universal City, La Panza Range, Moorpark, Lockwood Valley,
Wrightwood, Valyermo, Thousand Oaks, Santa Clarita, East Los
Angeles, Templeton, Oat Mountain, Pasadena, Matilija, Lake
Nacimiento, Ozena, Glendale, Woodland Hills, Newhall, Westlake
Village, Lancaster, San Miguel, Pomona, Simi Valley, Malibu Lake,
Warm Springs, San Rafael Mountain, Acton, Santa Ynez, The Angeles
Crest Highway, Santa Margarita Lake, Pyramid Lake, Elizabeth
Lake, Mount Wilson, Caliente Range, New Cuyama, Carrizo Plain,
Mount Pinos, Lake Palmdale, El Monte, Paso Robles, Solvang,
Shandon, Lake Cachuma, Tejon Pass, Rose Valley, Pearblossom,
Figueroa Mountain, and Irish Hills
157 AM PDT Thu Aug 21 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT SATURDAY...
* WHAT...Dangerously hot conditions with temperatures of 95 to 110
degrees expected.
* WHERE...A portion of southwest California.
* WHEN...From 11 AM this morning to 9 PM PDT Saturday.
* IMPACTS...There is a high risk for dangerous heat illness for
anyone, especially for the very young, the very old, those without
air conditioning, and those active outdoors.
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.
Stay cool, stay hydrated, stay informed.
Monitor the latest forecasts and warnings for updates.
&&
$$
