Extreme Heat Warning

Status

Event Extended (Time) Active alert

Start Time

Tue 08/25/2026 06:47 AM EDT

End Time

Fri 08/28/2026 11:00 PM EDT

Significance

Warning

Impacts

High impact

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 347 AM PDT Tue Aug 25 2026 ...HEAT ADVISORY IS CANCELLED... ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM PDT FRIDAY... * WHAT...Dangerously hot conditions with high temperatures in the mid 90s to 105 expected. Low temperatures will be mostly in the 70s. * WHERE...Orange County Inland Areas County. * WHEN...Until 8 PM PDT Friday. 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

CAZ554-252245- /O.CAN.KSGX.HT.Y.0010.000000T0000Z-260825T1700Z/ /O.EXT.KSGX.XH.W.0008.260825T1047Z-260829T0300Z/ Orange County Inland Areas- Including the cities of Orange, Garden Grove, Irvine, Santa Ana, Anaheim, Mission Viejo, and Fullerton 347 AM PDT Tue Aug 25 2026