California Severe Extreme Heat Warning | Effective 10/01/2026 13:12

Headline: 
Extreme Heat Warning issued October 1 at 1:12PM PDT until October 8 at 8:00PM PDT by NWS San Diego CA
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
October 1, 2026 - 1:12pm
Expires: 
October 1, 2026 - 9:15pm
Description: 
* WHAT...Dangerously hot conditions with high temperatures in the 90s to 104 expected. Night will be very warm with low temperatures mostly in the mid 60s to mid 70s. * WHERE...Santa Ana Mountains and Foothills. * WHEN...From 10 AM Friday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Instruction: 
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.
Area Description: 
Santa Ana Mountains and Foothills
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov