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 ...

Storm chaser Mike Scantlin captured these videos of close lightning strikes as a supercell rumbled through Oklahoma on June 27. I toured the White House to see Melania Trump's Christmas decorations.

This is what it feels like being under a supercell at night—intense lightning and thunder exploding overhead, lighting up a tornado-warned storm in dramatic flashes. A powerful look into severe ...