Heat Advisory
Status
Event Continued Active alertStart Time
Sat 08/22/2026 01:00 PM EDTEnd Time
Mon 08/24/2026 11:00 PM EDTSignificance
AdvisoryImpacts
Low impact
Full Alert Message
URGENT - WEATHER MESSAGE National Weather Service San Diego CA 1258 PM PDT Fri Aug 21 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 8 PM PDT MONDAY... * WHAT...Temperatures 90 to 97 for Inland Orange County, 90 to 102 for inland San Diego County, 98 to 106 for the Inland Empire and 89 to 99 in the mountains. * WHERE...Orange County Inland Areas, Riverside County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Mountains, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...From 10 AM Saturday to 8 PM PDT Monday. * 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.
Technical Header
CAZ048-050-056>058-554-220400- /O.CON.KSGX.HT.Y.0010.260822T1700Z-260825T0300Z/ 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, Ontario, San Bernardino, Poway, Irvine, Santa Ana, Mission Viejo, Anaheim, Pine Valley, Orange, Corona, San Marcos, Rancho Cucamonga, Escondido, Riverside, Julian, Garden Grove, La Mesa, El Cajon, Santee, Idyllwild-Pine Cove, Moreno Valley, and Fontana 1258 PM PDT Fri Aug 21 2026
