Severe Weather Threatens 75 Million Americans

(Undated) -- Severe weather continues to threaten 75-million Americans today. The most serious threat is in the Deep South, where Alabama and Mississippi are at greatest risk. One-third of U.S. residents are warned to watch the sky and listen to the radio to protect themselves against tornadoes. So far this week, a powerful spring storm system has spawned tornadoes that killed at least 29 people in a half-dozen states.