An impressive shelf cloud formation was seen over much of Hampton Roads late on Saturday afternoon. That might have people wondering what exactly causes these visually stunning clouds. A shelf ...

A timelapse video shows a stunning shelf cloud moving across the sky in southern Brazil. The dramatic footage was filmed in Caxias do Sul. About ten million people face water rationing as severe ...

A Canadian captured a timelapse of a shelf cloud formation slowly moving over Newfoundland. The spacecraft will arrive at the International Space Station this weekend and is meant to return Butch ...

While these wave clouds typically form in clear conditions, as Wilkie saw in Calgary, they can also form ahead of thunderstorm shelf clouds of severe thunderstorms in rare instances, as shown in ...

While these wave clouds typically form in clear conditions, as Wilkie saw in Calgary, they can also form ahead of thunderstorm shelf clouds of severe thunderstorms in rare instances, as shown in the ...