The Alaska Earthquake Center located about 600 aftershocks through September 4, 2013. Aftershocks as small as magnitude 1.5 were detectable. About 50 aftershocks had magnitudes of 4.0 or greater. The largest aftershock, M6.5, occurred on September 3 at 6:32 pm AKDT (September 4, 2:32 UTC).

Last Modified: April 25, 2024