Key Points:

• Extreme Heat Warning from 10am Wednesday through 10pm Thursday for  Death Valley National Park, northern San Bernardino County, southern Nye County, western and central Clark County, central and southern Mohave County, and the Colorado River Valley from Lake Mead through Lake Havasu, where Major Heat Risk is widespread.
• Warned locations include (but are not limited to) Death Valley National Park,  Barstow, Baker, Pahrump, Las Vegas, Kingman, Laughlin/Bullhead City, and Lake Havasu City.