Severe Thunderstorm Watch: Conditions are favorable for the development of a severe thunderstorm in particular areas.
Severe Thunderstorm Warning: Conditions have been reported by spotters or detected by radar that represent imminent danger to life and property of those in the path of the storm.
Despite their relatively small size (average 15 miles in diameter and 30 minutes in duration), all thunderstorms are dangerous, producing heavy rain, strong winds and lightning. New Castle County experiences an average of 2,150 lightning strikes per year. The air near an average lightning strike is heated to 50,000º F. The rapid heating and cooling of the air causes a shockwave that results in thunder. If you can hear the thunder, you are close enough to be struck by lightning and you need to implement the following protective actions for you and your family members immediately.