Don't let tragedy strike!
Lightning can strike many miles ahead of a storm front. If you hear thunder, seek shelter immediately, because that indicates lightning is within 10 miles of you. Safe shelters include inside a building or in an enclosed metal-topped vehicle.
If you are inside a building, the National Weather Service advises you to stay off corded telephones and away from any electrical device that could carry an electrical surge if lightning entered into your home through wiring. Turn off or unplug such appliances, stay away from television sets, and do not depend on surge protectors to absorb a lightning strike. Conductors can also include the plumbing in your house.
Wait 30 minutes
Authorities warn against outdoor activities until 30 minutes after the last clap of thunder.