Keep car windows closed and avoid convertibles. Telephone lines and metal pipes can conduct electricity. Avoid using the telephone or any electrical appliances. Avoid taking a bath or shower or running water for any purpose. Turn off the air conditioner.
Power surges from lighting can overload the compressor resulting in a costly repair job.
Draw blinds and shades over windows. If windows break due to objects blown by the wind, the shades will prevent glass from shattering into your home. If you are boating, get to land and find shelter immediately. Go to a low lying open place away from trees, poles or metal objects. Make sure the place you pick is not subject to flooding.