California Severe Extreme Heat Warning | Effective 10/04/2026 11:04

Headline: 
Extreme Heat Warning issued October 4 at 11:04AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
October 4, 2026 - 11:04am
Expires: 
October 5, 2026 - 5:00pm
Description: 
* WHAT...Dangerously hot conditions with temperatures up to 85 at the coast and 100 in the mountains and Cuyama valley. * WHERE...Cuyama Valley, Santa Barbara County Interior Mountains, Santa Barbara County Southeastern Coast, Santa Barbara County Southwestern Coast, Santa Cruz and Anacapa Islands, Santa Ynez Mountains Eastern Range, and Santa Ynez Mountains Western Range. * WHEN...Until 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Very hot temperatures are likely to continue into the second week of October, possibly requiring an extension of this product.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Area Description: 
Cuyama Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Santa Cruz and Anacapa Islands
Forcast Office: 
NWS Los Angeles/Oxnard CA
Sender: 
w-nws.webmaster@noaa.gov