Telephone lines and metal pipes can conduct electricity. Unplug appliances not necessary for obtaining weather information. Avoid using the telephone or any electrical appliances. Do not take a bath or shower. Turn off air conditioners.
Power surges from lightning can overload the compressors.
If you are caught outdoors in a thunderstorm and no shelter is nearby, find a low spot away from trees, fences and poles. If you are in the woods, take shelter under shorter trees. If you feel your skin tingle or your hair stand on end, squat low to the ground on the balls of your feet. Place your hands on your knees with your head between them. Make yourself the smallest target possible, and minimize your contact with the ground.