10 March 2014, 05:18 UTC (10:18 pm local time) a magnitude 6.8 earthquake struck the southern end of Cascadia subduction zone. The epicentre location of the earthquake was about 50 km west of the California coast. During the subsequent few hours many aftershocks followed in the same area. Ocean Networks Canada seismometers in Cascadia Basin (NV.NC27), Barkley Canyon (NV.NCBC) and Clayoquot Slope (NV.NC89) recorded the powerful main shock as well as some of the larger (up to magnitude 4.6) aftershocks about 2 minutes after the event.