WATCH: Toronto’s CN Tower struck by lighting as more than 1 million without power

The region saw tornado watches issued in areas such as Chatham-Kent and Windsor, Ontario, with rainfall, freezing rain, and thunderstorm watches issued from Toronto to Barrie and east to Ottawa.

The CN Tower is well-prepared for such incidents, equipped with a conductive series of copper strips that allow electrons from lightning to move through easily before feeding into "massive grounding rods".

According to Canada Lands Company, the CN Tower is struck by lightning on average 75 times per year. While the storm marked the end of treacherous weather for the city, a few showers are forecasted to return on Monday.

According to Reuters, more than 1.2 million Canadians were without power in Ontario and Quebec. More than 1,000 workers were trying to restore power overnight and into Tuesday morning in Quebec, with the province's electricity supplier saying that more outages could occur.

"We are confident that we can restore power to some of the affected customers today," Hydro-Quebec said in a statement. "Unfortunately, it is already expected that some customers will still be without power on Friday and this weekend."

As of 12:30 pm, around 1.1 million people in Quebec and around 122,000 people in Ontario were without power, according to Poweroutage.com.