07/18/2013 08:11 EDT | Updated 09/17/2013 05:12 EDT

Possible tornado reported at Manitoba First Nation

Environment Canada is looking into the possibility a tornado ripped off the roof of a home near Sioux Valley First Nation,

about half an hour west of Brandon. Meteorologist Dave Carlson said the agency is working to confirm that report.

A severe thunderstorm warning is in effect for Brandon and the RM's of North Cypress, South Cypress, Oakland, Cornwallis, Elton, Daly, and Whitehead.

"At the time, radar wasn't really showing a tremendous amount of rotation with this storm," Carlson said. "But that's not to rule it out. So hopefully we'll get some pictures and see what happens."

Carlson said the weather agency is looking for any photos or video of the storm.