Stunning footage captured a lightning strike at the World Trade Center overnight — a rare weather event known as “thundersnow” — as a blizzard brought well over 20 inches of snow to New York City.

Multiple bolts of lightning cut through the dark, snow-filled skies over Lower Manhattan and struck 1 World Trade Center, the tallest building in the Big Apple, according to video posted by Accuweather on Monday.

The flashes were each followed by a roll of thunder, the clip shows.

Thundersnow — a thunderstorm that occurs when there is snow rather than rain — is typically only seen during the strongest winter storms, such as this nor’easter.

The phenomenon requires a combination of moisture above the Earth’s surface and instability in upward-moving air — similar to the conditions in a tropical storm, according to the National Oceanic and Atmospheric Administration.

Thundersnow is typically associated with quickly mounting snowfall.

“When you get these rapidly intensifying storms, it’s not that uncommon to have that take place,” Accuweather Senior Meteorologist Tom Kines told the Post.

“It’s pretty neat if you’re in the area – it’s snowing really hard, and you’re seeing the lightning and hearing the thunder. It’s pretty odd,” he said.

But just because it’s snowing rather than raining does not make the lightning any less dangerous, according to Kines.

Parts of the tri-state area meanwhile saw as much as 30 inches of snow as Winter Storm Hernando battered the northeast Sunday and Monday.

New York City’s five boroughs and multiple New York counties are under a state of emergency, as is the entire state of New Jersey.