Both of these are caused by static electricity. And that’s what causes thunderstormstoo. Thunderstorms start in clouds. Inside a storm cloud, bits of ice move up and down and bump into each other.

Both of these are caused by static electricity. And that’s what causes thunderstormstoo. Thunderstorms start in clouds. Inside a storm cloud, bits of ice move up and down and bump into each other.

"Thunderstorms form more readily in summer ... known as the polar vortex. This shift causes freezing air to dip much further south than normal, resulting in the frigid temperatures that the ...