The dark appearance of the clouds is influenced by where you are looking at them from. A pitch black sky often appears before a storm strikes. Here's what gives these clouds their dark appearance.

The 29-year-old administrative assistant's viral video of the terrifying sight shows the giant cloud mass on the horizon and the sky suddenly turning dark over Raposo Tavares Highway.

A tornado warning was issued in several counties, and storms filled the sky with lightning and dark cloud formations. The NWS confirmed Tuesday night that a tornado was located east of Sneedville ...

The 29-year-old administrative assistant's viral video of the terrifying sight shows the giant cloud mass on the horizon and the sky suddenly turning dark over Raposo Tavares Highway.

Storm clouds make great pictures, but what do they mean. J. Staas Haught, USA TODAY NETWORK. ... Mammatus clouds filled the sky over Bucks County on Sunday night, June 30, ...

GREENSBORO, N.C. — If you’ve ever looked up and seen a dark, menacing cloud stretching across the sky like a giant wedge, you’ve likely witnessed a shelf cloud.

A tornado siren blared in Washington, Illinois, as dark clouds filled the sky on Wednesday, March 19.This footage of the looming storm was posted to Facebook by Rob Wiseman as the National Weather ...

Much of the Central Virginia region was hit by storms on Monday, with both flash flood and severe thunderstorm warnings being issued across the area. 8News viewers turned towards the sky and captur… ...

Weather officials say different types of clouds can tell you what kind of weather to expect. Here's a look at the different types.

A tornado warning was issued in several counties, and storms filled the sky with lightning and dark cloud formations. The NWS confirmed Tuesday night that a tornado was located east of Sneedville ...