Another day of extreme weather is unfolding in the United States Wednesday after violent storms roared through more than a ...

PENNSYLVANIA, USA — Slow-moving thunderstorms dropped record rainfall across much of southern Oklahoma and northern Texas ...

Residents of Ohio and Pennsylvania were cleaning up Wednesday after severe thunderstorms Tuesday evening left thousands ...

Some people woke up to damage after powerful storms blew through the region on Tuesday. Several trees and debris fell in yards.

A powerful storm downed trees and power lines, leaving more than a half million customers in Pennsylvania, Ohio and neighboring states in the dark on Wednesday morning, with local officials ...

The technical name for such a long-lived storm complex in meteorology is called a "mesoscale convective system," or "MCS." ...