Tornadoes take a leading role in 'Into the Storm'

Sometimes bad weather is an important supporting player in the movies. After all, without a thunderclap and a forked bolt of electricity striking his operating-room lightning rod, Dr. Frankenstein never could have shrilled his triumphant, "It's alive! It's alive!" And Dorothy never would have left Kansas if that cyclone didn't scoop her up and plunk her down in Oz. Gene Kelly couldn't have gone singing in the rain.