Watch the moment a funnel cloud forms over Windsor, Ont.

Kevin Ross of LaSalle, Ont., stood calmly on his deck and filmed the very few seconds it took for what appears to be a funnel cloud to form over Windsor, Ont.

The wind is howling throughout the one-minute, 13-second video.

You can hear Ross's wife worriedly say, "Oh, my god."

"Just don't worry about it," Ross says, as he calmly continues to film.

Further in the background, his kids can be heard screaming for him from the basement as a TV plays eerie music the second the funnel cloud appears on camera.

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"I had all the kids in the cellar, and I knew if it turned my way I would be able to jump downstairs and join them," he said. "My first concern was for my family, then for everyone else."

Ross said he didn't capture the apparent tornado that touched down a few blocks away from his LaSalle home just minutes before one formed in neighbouring Windsor.

"The one I filmed was the second one that formed. The first tornado that touched down was right behind our house on Victory Road," he said. "I was busy rounding up the kids and having my wife put them in the cellar during that one."

Environment Canada two tornadoes touched down. One in Windsor and one in LaSalle.