San Bernardino County was placed under an extreme heat warning by the National Weather Service on Friday at 1:22 a.m. The warning is in effect until Saturday Aug. 23, at 11 p.m.
The NWS Las Vegas NV says to be ready for, "Dangerously hot conditions with temperatures around 105 degrees in Kingman, Golden Valley, Dolan Springs; around 110 in Las Vegas, Pahrump, Barstow, Yucca Valley, Twentynine Palms; around 115 in Laughlin, Bullhead City, Needles, Lake Havasu City; around 120 at Furnace Creek in Death Valley National Park. Expect minimal overnight relief. Major-to-Extreme Heat Risk. In the Owens Valley, temperatures will be around 100 to 105, yielding Moderate Heat Risk."
"Heat related illnesses increase significantly during extreme heat events," according to the NWS.
The full list of affected locations includes:
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:
Safety tips from the Environmental Health and Safety office at UC Irvine:
For information about cooling centers operated by Los Angeles, Orange, Riverside and San Bernardino counties, see https://ready.lacounty.gov/heat/, https://ocgov.com/cooling-centers, https://capriverside.org/cool-centers and DPH.