Indoor Safety Precautions
The National Weather Service explains that, "a house or other substantial building offers the best protection from lightning. To determine the safety provided by a structure, it's more important to consider what happens if the structure gets hit by lightning rather than whether the structure will be hit by lightning. For shelters to provide protection from lightning, it must contain a mechanism to conduct the electrical current from the point of contact to the ground. Unless it's specifically designed to be lightning safe, small structures do little, if anything, to protect occupants from lightning. Many small open shelters on athletic fields, golf courses, roadside picnic areas, school yards and elsewhere are designed to protect people from rain and sun, but not lightning. Shelters that do not contain plumbing or wiring throughout or some other mechanism for grounding from the roof to the ground are not safe. Small, wooden, vinyl or metal sheds provide no protection from lighting and should be avoided during thunderstorms."
Things to Keep in Mind
1. Phone use is the leading cause of indoor lighting injuries in the U.S. Lightning can travel long distances in both phone and electrical wires, particularly in rural areas.
2. Stay away from windows and doors as these can provide a path for a direct strike to enter a home.
3. Do not lie on the concrete floor of a garage as it likely to contain a wire mesh.
4. In general, a basement is a safe place to go during a thunderstorm.
5. Avoid contact with concrete walls as they may contain metal reinforcing bars.
6. Avoid washers and dryers since they not only have contacts with the plumbing and electrical systems but also contain an electrical path through the outside through the dryer vent.
7. Avoid contact with plumbing. This includes washing your hands, taking a shower or bath, washing dishes or doing laundry.