On Thursday at 7:45 p.m. an updated extreme heat warning was issued by the National Weather Service in effect until Saturday Aug. 23, at 8 p.m. for Apple/Lucerne Valleys.

The NWS San Diego CA adds to expect, “Dangerously hot conditions with temperatures up to 108 degrees.”

“Heat related illnesses increase significantly during extreme heat events,” according to the NWS.

Emergency alerts in Southern California

For “considerable or catastrophic” hazards, emergency alerts will be sent to all enabled mobile phones in the area. To monitor lesser risk, residents are advised to sign up for county alert systems and to monitor agencies’ social media. How to sign up for alerts in your area:

LA County

Orange County

Riverside County

San Bernardino County

Staying safe in high temperatures

Sa

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