Rare 'Thundersnow' Event Hits Maryland Amid Winter Storm

A rare event known as ‘thundersnow’ hit Cumberland, Maryland, on February 20, as seen in this video filmed by Twitter user @penandpaperback.

Thundersnow is a rare event when a snowstorm produces thunder and lightning, according to Popular Science magazine.

Freezing rain, snow and sleet caused hazardous conditions in the wider Baltimore and Washington DC regions, the National Weather Service reported. Credit: @penandpaperback via Storyful