Hazard Report Provided By forecast.weather.gov

URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
1037 AM PDT Mon Jul 13 2026

CAZ048-050-055>058-065-554-140500-
/O.UPG.KSGX.XH.A.0004.260714T1700Z-260717T0300Z/
/O.NEW.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 Running Springs, Orange, Big Bear Lake,
Riverside, Rancho Cucamonga, Julian, Wrightwood, Anaheim,
Ontario, Big Bear City, Mission Viejo, Garden Grove, Moreno
Valley, Irvine, Lake Arrowhead, San Marcos, Idyllwild-Pine Cove,
Fullerton, Santa Ana, Poway, Pine Valley, El Cajon, Corona,
Escondido, San Bernardino, Crestline, Santee, Fontana, and La
Mesa
1037 AM PDT Mon Jul 13 2026

...EXTREME HEAT WARNING 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. Hottest on
  Wednesday.

* 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. Daytime outdoor
recreation is discouraged.

&&

$$

Hazard Report Provided By forecast.weather.gov