WWUS76 KSGX 240810
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
110 AM PDT Mon Aug 24 2026

CAZ048-050-056>058-554-240915-
/O.CAN.KSGX.HT.Y.0010.000000T0000Z-260825T1700Z/
/O.CAN.KSGX.XH.A.0006.260825T1700Z-260829T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-San
Diego County Valleys-Riverside County Mountains-Santa Ana
Mountains and Foothills-San Diego County Mountains-Orange County
Inland Areas-
Including the cities of Fullerton, Fontana, Poway, Santee,
Ontario, Orange, Anaheim, Julian, Rancho Cucamonga, La Mesa,
Idyllwild-Pine Cove, Moreno Valley, El Cajon, San Bernardino,
Santa Ana, Corona, San Marcos, Irvine, Garden Grove, Pine Valley,
Riverside, Mission Viejo, and Escondido
110 AM PDT Mon Aug 24 2026

...HEAT ADVISORY IS CANCELLED...
...EXTREME HEAT WATCH IS CANCELLED...

$$

CAZ055-241615-
/O.CAN.KSGX.XH.A.0006.260825T1700Z-260829T0300Z/
/O.CON.KSGX.HT.Y.0010.000000T0000Z-260825T1700Z/
San Bernardino County Mountains-
Including the cities of Running Springs, Big Bear Lake, Lake
Arrowhead, Crestline, Big Bear City, and Wrightwood
110 AM PDT Mon Aug 24 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY...
...EXTREME HEAT WATCH IS CANCELLED...

* WHAT...Temperatures up to 94.

* WHERE...San Bernardino County Mountains.

* WHEN...Until 10 AM 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.

&&

$$

CAZ043-060-552-240915-
/O.CAN.KSGX.XH.A.0006.260825T1700Z-260829T0300Z/
San Diego County Coastal Areas-Apple and Lucerne Valleys-Orange
County Coastal Areas-
Including the cities of Newport Beach, Encinitas, Chula Vista,
Carlsbad, Huntington Beach, Hesperia, San Clemente, Apple Valley,
National City, Oceanside, Victorville, Lucerne Valley, Laguna
Beach, Costa Mesa, Vista, and San Diego
110 AM PDT Mon Aug 24 2026

...EXTREME HEAT WATCH IS CANCELLED...

$$

CAZ061-062-065-241615-
/O.CON.KSGX.XH.W.0008.000000T0000Z-260829T0300Z/
Coachella Valley-San Diego County Deserts-San Gorgonio Pass near
Banning-
Including the cities of Indio, Palm Desert, Coachella, Palm
Desert Country, Cathedral City, Borrego Springs, La Quinta, and
Palm Springs
110 AM PDT Mon Aug 24 2026

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

* WHAT...Dangerously hot conditions with temperatures up to 113.

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

* WHEN...Until 8 PM PDT Friday.

* 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.

&&

$$

17