This was
your sky.

A Supercell Thunderstorm Cloud Over Montana

This impressive supercell thunderstorm cloud over Montana looks like an alien mothership. These colossal storm systems center on mesocyclones, which are rotating updrafts several kilometers wide. They bring torrential rain and high winds, including tornadoes. Jagged, sculpted clouds adorn the supercell's edges, while wind-swept dust and rain dominate its center.