On July 17, an earthquake struck near the Komandorski Islands, east of the Kamchatka Peninsula in the Bering Sea at (23:34:13 UTC). Although there were no casualties from this earthquake, it was notable for a rare characteristic known as supershear, and is one of the few times a supershear earthquake has been observed. Its rupture length of 400 km is also one of the longest in the world for a strike-slip fault, comparable to the 1906 San Francisco and 2001 Kokoxili earthquake. It was preceded by a few foreshocks months earlier, and aftershocks that continued for nearly six months.