* WHAT...Dangerously hot conditions for an unusually long period. High temperatures 105 to 111 in the Owens Valley, 110 to 118 in Las Vegas, Pahrump, and Barstow, and 122 to 129 at Furnace Creek in Death Valley National Park. * WHERE...In California, Death Valley National Park, Owens Valley, and Western Mojave Desert. In Nevada, Las Vegas Valley and Western Clark and Southern Nye County. * WHEN...Until 11 PM PDT Wednesday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Hot temperatures overnight will mean little relief from the daytime heat, especially in Las Vegas and Death Valley, where low temperatures may not fall below 90 degrees for several days.
* WHAT...Dangerously hot conditions for an unusually long period. High temperatures 107 to 111 in Beatty and Kingman, 110 to 117 in Primm and the Morongo Basin, and 113 to 121 in Baker, Mesquite, and the Colorado River Valley. * WHERE...Portions of northwest Arizona, southeast California, and south central and southern Nevada. * WHEN...Until 11 PM PDT / MST Wednesday. * IMPACTS...Heat-related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Hot temperatures overnight will mean little relief from the daytime heat, especially in lower elevations of the Colorado River Valley, where low temperatures may not fall below 90 degrees for several days.
* WHAT...High temperatures 90 to 100 on either side of Westgard Pass on Highway 168, 85 to 90 at 8000 feet in the Spring Mountains and Sheep Range, and 105 to 110 at 4000 feet in Red Rock Canyon. * WHERE...White and Inyo Mountains, Sheep Range, and Spring Mountains-Red Rock Canyon. * WHEN...From 11 AM Saturday to 11 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat-related illnesses.