How many people does lightning kill in the United States each year?

Lightning kills about 20 people in the United States each year, and hundreds more are severely injured. This website will teach you how to stay safe and offer insight into the science of lightning.

What causes lightnings ?

Lightning is an electrical discharge caused by imbalances between storm clouds and the ground, or within the clouds themselves. Most lightning occurs within the clouds. "Sheet lightning" describes a distant bolt that lights up an entire cloud base.

Where does most lightning occur ?

Most lightning occurs within the clouds. "Sheet lightning" describes a distant bolt that lights up an entire cloud base. Other visible bolts may appear as bead, ribbon, or rocket lightning.