California Moderate Heat Advisory | Effective 09/08/2026 13:52

Headline: 
Heat Advisory issued September 8 at 1:52PM PDT until September 10 at 8:00PM PDT by NWS San Diego CA
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
September 8, 2026 - 1:52pm
Expires: 
September 8, 2026 - 10:30pm
Description: 
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the 90s to near 100 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the mid 80s to low 90s expected. * WHERE...Santa Ana Mountains and Foothills. * WHEN...For the Extreme Heat Warning, until 8 PM PDT Wednesday. For the Heat Advisory, from 8 PM Wednesday to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Areas of Major HeatRisk. Very 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Area Description: 
Santa Ana Mountains and Foothills
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov