This National Geographic film chronicles one of this century's most catastrophic storms in March 1993 that wreaked havoc along its 1,200-mile journey of destruction from Florida's Gulf Coast to Canada - knocking out power in more than three million homes and taking some 270 lives. The late weather forecast predicted deadly tornadoes, thunderstorms and a record-breaking blizzard that would hit the eastern United States in one violent storm. But for some already asleep for the night, these urgent emergency warnings would go unheard. This outstanding documentary also includes the dramatic rescue of students trapped by blinding snow on a wilderness expedition in the Great Smoky Mountains, and one family's terrifying ordeal as a 12-foot-high storm surge ravaged their weekend reunion in Florida.