Supercell thunderstorms are the least common type of thunderstorm, but they are the most likely to produce severe weather and become dangerous. According to the National Weather Service, supercell ...

Supercell thunderstorms are dangerous severe storms that unleash destructive hail, roaring winds and powerful tornadoes. They are responsible for nearly all of the United States’ most violent ...

Thunderstorms need moisture, energy — which meteorologists call instability — and some sort of lift to form. Usually, the lift comes from cold and warmer air masses colliding along a line called a ...