Series of earthquakes hit northern coast of BC

I counted six earthquakes ranging from 4.6 to 5.9 on this chart,  and all in the last few hours.

From Globe&Mail:
A series of earthquakes struck an area   off British Columbia’s coast Tuesday, but they weren’t large enough to cause damage or tsunami warnings.

The largest quake measured 6 on the Richter scale and was centred almost 200 kilometres off Bella Bella, on B.C.’s northern coast.

Natural Resources Canada says two more afternoon quakes struck within 20 minutes of each other and measured 4.5 and 4.9 on the Richter scale.......................