WATCH: Massive thunder cloud, visible for 50 miles, moves across Tri-State

Videos of the mammoth cloud formation have come in from Cold Springs to Lebanon.

Watch the Skies

A Massive Winter Storm Hit Southern California — Here's What We Know

Winter storms leave 89 dead across US as chill settles over Great Lakes and Northeast

Megaflash! 2 new world records for lightning

Winter storm warnings: Flash flooding continues as weekend threatens repeat storms

How to watch the first meteor shower of the year

Tri-State area under severe thunderstorm watch Sunday

Meet 'Firebows,' the Flat, Rainbow-Like Stacks That Appear in Sunny Skies - Atlas Obscura

Explainer: All about orbits

Sierra Braces for Peak of Severe Storm, With Over 10 Feet of Snow Possible

Most powerful electrical storm on record detected over India