Storm clouds loomed over a neighborhood in Sydney, New South Wales, on October 14, amid a severe thunderstorm warning for the area. In this video by Stephanie Cholakyan, lightning flashes behind storm ...

As it does so, it draws an upward spark from the ground to meet it, triggering a lightning flash with huge electric currents that transport some of the storm's charge to the ground. These cloud-to ...

A dramatic stack photo of a lightning storm has been captured ... the channel we see during a flash of lightning. A file photo of a lightning bolt streaking across clouds in Nebraska.

Thunderstorms can develop at any time of year in the U.S., but they typically occur during the warmer months of spring, summer and fall. All types of thunderstorms carry one major threat: Lightning.

NASA’s Juno spacecraft recently captured this spooky green flash ... vortex of the storm, even from Juno’s vantage point 19,900 miles above the tops of Jupiter’s clouds. Lightning often ...

Darwin residents have reported seeing rare green lightning in a record-breaking storm that created ... Brinkin unit. "The clouds glowed very momentarily green in two big flashes," he said.