Dozens of warnings are being issued in rapid-fire succession Saturday afternoon in Mississippi and soon Alabama. Several storms are producing what appear to be large, long-lived tornadoes. Forecasters at the National Weather Service are pleading with residents to stay aware of the weather and heed the warnings today;

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.

"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,