Heat Advisory California | Effective 03/18/2026 02:49

Headline: 
Heat Advisory issued March 18 at 2:49AM PDT until March 20 at 8:00PM PDT by NWS San Diego CA
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
March 18, 2026 - 2:49am
Expires: 
March 18, 2026 - 4:00pm
Description: 
* WHAT...High temperatures in the 80s to mid 90s below 6500 feet expected. * WHERE...San Bernardino County Mountains below 6500 feet. * WHEN...From 10 AM this morning to 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses.
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. 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: 
San Bernardino County Mountains
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov