476
WWUS76 KSGX 221957
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1257 PM PDT Fri Aug 22 2025

CAZ060-230515-
/O.CON.KSGX.XH.W.0003.000000T0000Z-250824T0300Z/
Apple and Lucerne Valleys-
Including the cities of Apple Valley, Victorville, Lucerne
Valley, and Hesperia
1257 PM PDT Fri Aug 22 2025

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY...

* WHAT...Dangerously hot conditions with temperatures up to 105
  expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events.

* ADDITIONAL DETAILS...Today is expected to be the hottest day.

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.

&&

$$

CAZ061-062-065-230515-
/O.CON.KSGX.XH.W.0003.000000T0000Z-250824T0300Z/
Coachella Valley-San Diego County Deserts-San Gorgonio Pass near
Banning-
Including the cities of Coachella, Indio, Palm Desert Country,
Borrego Springs, La Quinta, Palm Springs, Cathedral City, and
Palm Desert
1257 PM PDT Fri Aug 22 2025

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY...

* WHAT...Dangerously hot conditions with temperatures up to 112.

* WHERE...Coachella Valley, San Diego County Deserts, and San
  Gorgonio Pass near Banning.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events.

* ADDITIONAL DETAILS...Today is expected to be the hottest day.

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.

&&

$$

CAZ050-230515-
/O.EXT.KSGX.HT.Y.0005.000000T0000Z-250824T0300Z/
San Diego County Valleys-
Including the cities of San Marcos, La Mesa, El Cajon, Santee,
Poway, and Escondido
1257 PM PDT Fri Aug 22 2025

...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT SATURDAY...

* WHAT...Temperatures up to 97 expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Today is expected to be the hottest day.

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.

&&

$$

CAZ057-554-230515-
/O.EXT.KSGX.HT.Y.0005.000000T0000Z-250824T0300Z/
Santa Ana Mountains and Foothills-Orange County Inland Areas-
Including the cities of Fullerton, Irvine, Orange, Garden Grove,
Santa Ana, Mission Viejo, and Anaheim
1257 PM PDT Fri Aug 22 2025

...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT SATURDAY...

* WHAT...Temperatures up to 95 expected.

* WHERE...Orange County Inland Areas and Santa Ana Mountains and
  Foothills.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Today is expected to be the hottest day.

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.

&&

$$

CAZ048-230515-
/O.CON.KSGX.HT.Y.0005.000000T0000Z-250824T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of San Bernardino, Fontana, Moreno Valley,
Ontario, Riverside, Corona, and Rancho Cucamonga
1257 PM PDT Fri Aug 22 2025

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY...

* WHAT...Temperatures up to 105 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland
  Empire.

* WHEN...Until 8 PM PDT Saturday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Today is expected to be the hottest day.

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.

&&

$$

CAZ055-056-058-230300-
/O.CON.KSGX.HT.Y.0005.000000T0000Z-250823T0300Z/
San Bernardino County Mountains-Riverside County Mountains-San
Diego County Mountains-
Including the cities of Lake Arrowhead, Running Springs,
Crestline, Idyllwild-Pine Cove, Big Bear Lake, Wrightwood, Big
Bear City, Julian, and Pine Valley
1257 PM PDT Fri Aug 22 2025

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...Temperatures up to 100 below 5500 feet expected.

* WHERE...Riverside County Mountains, San Bernardino County
  Mountains, and San Diego County Mountains.

* WHEN...Until 8 PM PDT this evening.

* 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.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

&&

$$

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