Unplug appliances not necessary for obtaining weather information. Avoid using the telephone or any electrical appliances. Use phones ONLY in an emergency. Do not take a bath or shower. Turn off air conditioners.
Power surges from lightning can overload the compressors.
Get to higher ground if flash flooding or flooding is possible. Once flooding begins, abandon cars and climb to higher ground. Do not attempt to drive to safety. Most flash flood deaths occur in automobiles. Find a low spot away from trees, fences, and poles.