Extreme Heat Warning
Status
Event Continued Active alertStart Time
Fri 07/31/2026 05:04 AM EDTEnd Time
Sun 08/02/2026 11:00 PM EDTSignificance
WarningImpacts
High impact
Full Alert Message
URGENT - WEATHER MESSAGE National Weather Service San Diego CA 204 AM PDT Fri Jul 31 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY... * WHAT...Dangerously hot conditions with high temperatures in the upper 90s to 110 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...Until 8 PM PDT Sunday. * 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.
Technical Header
CAZ048-312230- /O.CON.KSGX.XH.W.0007.000000T0000Z-260803T0300Z/ San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of San Bernardino, Riverside, Rancho Cucamonga, Corona, Ontario, Fontana, and Moreno Valley 204 AM PDT Fri Jul 31 2026
