London·Video

'It just went Ka-boom!': Did you see this giant smoke ring over London yesterday?

Tylor Wilson was indoors playing video games during Monday night’s thunderstorm when all of a sudden he heard a loud “Ka-Boom” from outside his window.

During Monday's thunderstorm, a cloud ring appeared in the sky over London

Residents in London, Ont. describe how the "sky blew up," leaving what appears to be a smoke ring in the sky. 0:52

Tylor Wilson was indoors playing video games during Monday night's thunderstorm when all of a sudden he heard a loud "Ka-Boom" from outside his window.

"The sky just blew up … my whole apartment flashed with this light," he said in a video that captured what he saw next: a large smoke ring in the sky.

Soon after, Wilson's power went off. He said he had no idea what happened.

But according to London Hydro, it could've been the aftermath of a lightning strike hitting a transformer in the city's east end.

Power restored

The incident happened at about 9 p.m. Monday in the area of Trafalgar Street and Clarke Road, confirmed Nancy Hutton London Hydro.

London Fire attended the scene following reports of a "loud bang and a fireball." Officials controlled the fire before London Hydro took over.

Hutton said she couldn't confirm whether the smoke ring was a direct result of the incident.

However, "when a transformer is affected like that, it normally makes a 'boom', sometimes there's fire," she said. "You might see sparks, you might see smoke."

She said the incident left about 100 units without power, which was restored Tuesday morning.

Residents in London, Ont. describe how the "sky blew up," leaving what appears to be a smoke ring in the sky. 0:53