Heat Advisory
Status
New Event Active alertStart Time
Mon 09/01/2025 01:00 PM EDTEnd Time
Tue 09/02/2025 09:00 PM EDTSignificance
AdvisoryImpacts
Low impact
Locations Affected
Santa Ana, CA ∙ Irvine, CA ∙ Riverside, CA ∙ San Bernardino, CA ∙ Anaheim, CA ∙ Moreno Valley, CA ∙ Orange, CA ∙ Fullerton, CA ∙ Rancho Cucamonga, CA ∙ Escondido, CAFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service San Diego CA 1219 PM PDT Sat Aug 30 2025 ...HEAT ADVISORY IN EFFECT FROM 10 AM MONDAY TO 6 PM PDT TUESDAY... * WHAT...Temperatures 93 to 100 expected for the valleys and mountains. Temperatures up to 106 expected for the Inland Empire. * WHERE...Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...From 10 AM Monday to 6 PM 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Technical Header
CAZ048-050-057-554-311230- /O.NEW.KSGX.HT.Y.0006.250901T1700Z-250903T0100Z/ San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Valleys-Santa Ana Mountains and Foothills-Orange County Inland Areas- Including the cities of Rancho Cucamonga, Santa Ana, Corona, Fontana, Fullerton, Santee, Ontario, San Bernardino, Poway, La Mesa, Mission Viejo, Escondido, Irvine, Garden Grove, El Cajon, San Marcos, Riverside, Moreno Valley, Orange, and Anaheim 1219 PM PDT Sat Aug 30 2025
