Marine Corps Air Ground Combat Center Twentynine Palms

Extreme Heat Watch issued July 20 at 12:11PM PDT until July 27 at 8:00PM PDT by NWS San Diego CA

* WHAT...Dangerously hot conditions with high temperatures 103 to 108 possible. Low temperatures in the low to mid-70s, locally near 80 degrees in the Lucerne Valley. * WHERE...Apple and Lucerne Valleys. * WHEN...From Wednesday morning through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Areas of major HeatRisk. Elevated low temperatures will limit overnight relief from the heat.