07/20/2013 11:15 EDT | Updated 09/19/2013 05:12 EDT

Intense storm wreaks havoc in southern Quebec

More than 276,000 Hydro Quebec clients are without power Saturday morning after an intense storm ripped through southern Quebec.

High winds, torrential rains and thunder and lightning hit the Montreal region on Friday afternoon, leading to many fallen tree branches, downed Hydro Quebec equipment and even tornado warnings. Close to 30 millimetres of rain fell in 15 minutes, causing some flooding in the Montreal region.

“We have… people working on the field and we also have crews coming from the east of Quebec to help,” said Louis-Olivier Batty of Hydro Quebec.

In addition, crews from the U.S. en route to southern Quebec to help out.

However, Batty could not say when power would be restored to all customers.

In Boucherville, a 21-year-old woman and municipal employee was killed when a tree branch fell at an outdoor pool. A 40-year-old woman suffered minor injuries in the accident, while a six-year-old boy was rushed to hospital with more severe ones.

At its peak, the storm caused power outages for more than half a million Hydro Quebec subscribers. Some are still without power today.

Though Environment Canada said no tornadoes actually touched down in Quebec, Environment Canada meteorologist René Héroux said there were microbursts and small twisters.

“Most of the damage was due to microbursts, that means straight-line winds. Of course there may have been some small twisters here and there, but those were really short duration,” he said.

A golf club in Mirabel reported a one-kilometre long, 300-metre wide path of ripped-out trees on its property.