Severe thunderstorm warning ends for much of southern Ontario

A severe thunderstorm warning has ended for most of Southern Ontario but remains in effect for areas including North Durhamand the Kawartha Lakes.

Environment Canada warns that the stormscould bringtorrential rain in excess of 50-75 mm.

The storm downed trees and wires in parts of Toronto and the surrounding areas. Multiple power outages were reportedacross the city, Toronto Hydro said Saturday.

Pam Ogawa was in her boat when what she believes isa tornado hit inPefferlaw,Georgina.

"I didn't know what it was at first It was just whistling and I just thought, 'That's not right.'"

"I'd never experienced anything like that. I'm shaking like a leaf. It was so loud - it was like a whistling. I couldn't even hear anything."

She says she's now waiting for the rain to stop so she can get her belongings off the boat and leave.

Environment Canadasaysthe storms could also bring brief strong wind gusts andheavy downpours that could cause flash floods and water to pool on city streets. Lightning is also possible.

"Remember, when thunder roars, go indoors!" it said in a statement on itswebsite.

Meanwhile, atornado warning has endedfor the Ontario towns of Newmarket and Georgina,the township of Uxbridge and the community of Beaverton.The warning also appliedto northern York Region and northern Durham region but it is now over.

Earlier Saturday,an eyewitnesshad reported a tornado on the ground at Sunset Beach on the southeast shore of Lake Simcoe at 12:50 p.m. The report has not yet been confirmed.