Question: I've always wondered why storm clouds are dark in color. Why is that? — Chris. Answer: Clouds that are deep enough to produce heavy rain, lightning and hail contain a tremendous amount ...

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 ...

Dark storm clouds loomed over San Antonio, Texas, as a dramatic lightning storm swept through the city on May 24.A tornado warning was in effect for Bexar County and a severe thunderstorm watch in ...

Physicists identify anti-electron clouds inside thunderstorms "In detecting the positrons, it's possible we were seeing sort of the fingerprint of dark lightning," said lightning expert Joseph Dwyer.

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 ...