Do not lie flat on the ground. Avoid being the highest object in any area. Avoid hilltops, trees or telephone poles. In a forest, move under a growth of small trees. Stay away from water during a thunderstorm.
Water conducts electricity.
Drop golf clubs and remove golf shoes. Keep several yards away from other people. In open areas, go to a low place like a ravine or valley. Stay indoors and away from windows during a storm. Inside a home, avoid using the phone and unplug unnecessary appliances.