California Moderate Heat Advisory | Effective 08/25/2026 03:47

Headline: 
Heat Advisory issued August 25 at 3:47AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
August 25, 2026 - 3:47am
Expires: 
August 25, 2026 - 3:45pm
Description: 
* WHAT...High temperatures in the 90s below 6000 feet expected. * WHERE...San Bernardino County Mountains County below 6000 feet. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Low temperatures 10 to 15 degrees above normal will limit relief from the heat. Increasing temperatures into the middle of next week will increase the threat of heat-related illness across populations.
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: 
San Bernardino County Mountains
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov