4890 Alliance Drive, Suite 2200, Fairfax, VA 22030
Seamus Mooney, Coordinator
What It Is
Thunderstorms are large, localized weather events. Thunderstorms are most common in summer, but can occur in any season. All thunderstorms produce lighting and have the potential to produce tornadoes, strong winds, hail, wildfires, and flash flooding – the last of which is responsible for more fatalities than any other thunderstorm-related hazard.
Lightning is of particular concern because of its unpredictability – lightning often strikes beyond what is perceived to be the storm, sometimes occurring as far as 10 miles away from rainfall.