Hazard Report Provided By forecast.weather.gov

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
949 PM PDT Mon Jul 13 2026

CAZ048-050-055>058-065-554-141330-
/O.CON.KSGX.XH.W.0005.260715T1700Z-260717T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-San
Diego County Valleys-San Bernardino County Mountains-Riverside
County Mountains-Santa Ana Mountains and Foothills-San Diego
County Mountains-San Gorgonio Pass near Banning-Orange County
Inland Areas-
Including the cities of Idyllwild-Pine Cove, Rancho Cucamonga,
Fontana, San Marcos, San Bernardino, Fullerton, Wrightwood,
Mission Viejo, Big Bear City, Crestline, Orange, Irvine, Moreno
Valley, La Mesa, Julian, Escondido, Lake Arrowhead, Ontario,
Santa Ana, Santee, Corona, Anaheim, Running Springs, Pine Valley,
El Cajon, Riverside, Big Bear Lake, Garden Grove, and Poway
949 PM PDT Mon Jul 13 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO 8
PM PDT THURSDAY...

* WHAT...Hot and humid conditions with elevated overnight
  temperatures. Temperatures will be in the 90s for inland Orange
  County and in the mountains below 6000 feet, 90s to near 100 in
  the San Diego County valleys, and 100 to 110 for the Inland Empire.

* WHERE...Orange County Inland Areas, Riverside County Mountains,
  San Bernardino County Mountains, San Bernardino and Riverside
  County Valleys-The Inland Empire, San Diego County Mountains, San
  Diego County Valleys, San Gorgonio Pass near Banning, and Santa
  Ana Mountains and Foothills.

* WHEN...From 10 AM Wednesday to 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events. Those spending long periods outdoors will be
  at greater risk for heat health impacts.

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.

&&

$$

Hazard Report Provided By forecast.weather.gov