Avoid using the telephone or electrical appliances. Use phones only in an emergency. Unplug electrical appliances which are not in use. Do not take a bath or shower . Turn off air conditioners.
Power surges from lightning can overload the compressors.
If you are driving on highways and flyovers be alert to strong gusts. Get to higher ground if flash flooding is possible. Shelter in a low spot away from trees, fences and poles, that is not subject to flooding. If you are in a forested area, take shelter under the shorter trees. If you feel your skin tingle or your hair stand on end, squat low to the ground.