The dynamic storm from Friday through Sunday had earned an unusual “high risk” designation from weather forecasters.

Millions of Americans across the country are on alert for a severe weather outbreak as violent, long-track tornadoes with damaging winds of up to 80 mph and large hail are expected across the Midwest and South with the cross-country storm moving east.

Violent tornadoes and high winds decimated homes, wiped out schools and toppled semitractor-trailers as a monster storm that killed at least 32 people ripped its way across the central and

Austin Police said at least five people died and 11 were hurt in a crash involving at least 17 vehicles, including semi-trucks, on Interstate 35 in north Austin late Thursday night. "We look forward to continued engagement ... to support public health, build consumer trust and promote consumer choice."

At least 26 people have been killed in a monster storm sweeping across much of the U.S. People were killed in tornadoes in Missouri and in a Kansas dust storm.