California Moderate Heat Advisory | Effective 09/09/2026 14:25

Headline: 
Heat Advisory issued September 9 at 2:25PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
September 9, 2026 - 2:25pm
Expires: 
September 9, 2026 - 10:30pm
Description: 
* WHAT...High temperatures in the 90s below 5500 feet expected. * WHERE...Riverside County Mountains and San Diego County Mountains. * WHEN...Until 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Moderate HeatRisk. Warm overnight temperatures will limit relief from the heat.
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: 
Riverside County Mountains; San Diego County Mountains
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov