Long Islander captures video of ‘incredibly insane’ lightning outside his home

It lit up the Long Island sky.

A 10-mile long bolt of lightning caused quite a spectacle when it appeared in the sky over Bayport, Long Island Wednesday night.

The natural wonder illuminated the sky behind the waterfront home of retired FDNY fireman Kenny Gunther — and luckily he caught it on camera.

Gunther told The Post he was watching TV when he felt the floor under his feet rumbling, and then saw a flash outside his window.

“I just grabbed my iPhone and I just stick it on the windowsill in my bedroom facing south with their widest angle, and I just had it record,” he recalled.

“I turn all the lights off and I’m just sitting there quiet. And then all of a sudden I saw that lightning and I said, ‘Oh my God, I think I just got that!’ And I went back and watched it and I said, ‘Holy cow, that is freaking amazing.’”

Gunther said what appeared in his video wasn’t even the entire length of the lightning bolt.

“It actually went out of frame. That thing had to be 10 miles wide,” he said.

“And that one wasn’t even that much of a clap of thunder. But the one before that was, that’s the one that shook the house.”

He sent the video to Islandwide Weather’s Facebook page — run by two Long Island weather enthusiasts — who posted it that same night.

The post garnered more than 100,000 views and over 170 comments marveling over the “incredibly insane” sight.

“I thought a nuke dropped. I didn’t know what to do,” one person said.

“Mother Nature gave us a beautiful show,” another added.

“It’s like from a movie,” someone else wrote, while another said, “Not sure this is a good sign for Earth.”