Two earthquakes shook eastern Ontario and Quebec Friday morning, rattling buildings and nerves as far away as Barrie, Toronto and Waterloo.
A 5.2 magnitude quake hit about 20 kilometres northeast of Shawville, Que., at 9:43 a.m., according to Earthquakes Canada.
Although the data initially indicated a 4.2 magnitude earthquake shook Braeside, Ont., 10 minutes later, Earthquakes Canada updated its report to say there was a 4.1 magnitude aftershock near the Shawville epicentre at 9:53 a.m.
Buildings in Ottawa and Toronto were evacuated, including the offices of the National Post. The quake touched off an eruption of reaction on Twitter as users reported buildings shaking in Ottawa for several seconds.