Such conditions resulted in a pileup on Interstate 70 last week in western Kansas involving dozens of cars and trucks that left eight people dead. Blinding dust also prompted New Mexico's transportation department to close Interstate 25 from the Colorado border southwest to Las Vegas, New Mexico.

Unusually vicious and damaging weather across multiple U.S. states spawned violent tornadoes, blinding dust storms and fast-moving wildfires over the weekend, leaving at least 39 people dead. In the latest tally of the destruction,

"Get to the sturdiest structure you have access to and remain in place until the storms pass," the NWS told residents in Alabama on Saturday night, when multiple tornado warnings were issued. At least 250,