A tornado is confirmed to have touched down in southwest Manitoba on Sunday.

Environment Canada meteorologist Mike Macdonald said the twister hit between the communities of Deloraine and Boissevain.

Fortunately, it was in a field and did not strike any structures or injure any people.

That's not far from where another tornado blew through Sioux Valley First Nation July 18, and where a possible tornado hit Pipestone on July 13.

In those latter cases the storms left behind damaged homes and trees and sent two people in Sioux Valley to hospital.

Environment Canada is still trying to determine whether it was a tornado or plow wind that slammed into Pipestone.

Macdonald said the number of summer storms this year isn't unusual but more have been reported lately.

"Over the past couple weeks, activity has certainly increased in western Manitoba," he said, attributing Sunday's storm to humid air colliding with a cold front.

In Winnipeg on Sunday, the sky was filled with lightning flashes and booming thunder, which being blamed for sparking a house fire in the West End.

Fire cews were called to the 600 block of Sherburn Street at about 9 p.m. They believe an electrical surge caused the fire, which resulted in damages estimated at $70,000.

A firefighter had to be treated on the scene for a minor injury.

The storm also led to a couple of power outages in the city.

In Elmwood, 550 Manitoba Hydro customers were left in the dark for a few hours while about 100 customers were affected in the Minto and Burnell area.

All power has since been restored.