Lighting and thunderstorms may be smaller in size than hurricanes and blizzards but all thunderstorms are potentially dangerous and occasionally produce associated dangers such as tornadoes, high winds, hail, and flash flooding.
Before a Thunderstorm
Keep your eyes on the sky (look for increased winds, darkening skies, and flashes of light), tune into local broadcasts for information. If you hear thunder you are close enough to be affected by lightning - go inside, and secure outdoor objects and furniture - shutter windows and secure doors.
During a Thunderstorm
If caught outside protect yourself by avoiding tall objects such as poles and trees and keep low to the ground with your head between your knees (laying flat actually makes you a larger target).
If boating or swimming get out of the water immediately, if indoors avoid conductive fixtures and objects, avoid showering or bathing, unplug appliances that will be affected by electrical surges, and have an emergency kit available in case of power outages.