Earthquakes in northeast Canada rattled buildings in several cities Friday but had no effect on nearby nuclear facilities.

The National Research Universal Reactor at Chalk River. Source: AECLA 5.2 magnitude quake was the largest of the tremors near Ottawa and struck at about 9:45 a.m. Its epicenter was about 50 miles from the Chalk River Laboratories, the birthplace of Canada's Candu heavy water reactor. In a release, the Canadian Nuclear Safety Commission said the quake had no effect on that site, its National Research Universal Reactor, or any other nuclear facility in the country. A release from Chalk River confirmed that a site walkdown showed no damage at the labs.

According to the Canadian Broadcasting Corp., the quake could be felt as far away as Toronto and Cleveland.