There they encounter a powerful thunderstorm.

Spawned from powerful thunderstorms, tornadoes can cause fatalities and devastate a neighborhood in seconds.

Some of the most powerful thunderstorms over the United States occur in the Midwest and the Southern states.

FEW things in nature as common as a powerful thunderstorm are as awe-inspiring.

As a large and powerful area of low pressure moved across the northern Plains, powerful severe thunderstorms developed across a trailing cold front.

As a powerful thunderstorm approached Columbiana during the afternoon, a tornado formed southwest of town about 5:10 p.m.

Most of the fires were caused by lightning from powerful thunderstorms that generally do not appear in the desert until mid-July.

Last night, powerful thunderstorms erupted throughout the metropolitan area, and the rain forced the cancellation of the Yankees-Orioles baseball game.

The third battalion arrived during a powerful thunderstorm when the wind was making the bridge oscillate.

Today, officials suspended play at 2:35 P.M., and minutes later a powerful thunderstorm swept over the course.