The Alaska Earthquake Center located about 500 aftershocks (white circles on the above map) through end of October, 2011. About 50 aftershocks have magnitudes 4.0 or greater. The largest aftershock of magnitude 6.8 occurred on September 2 at 10:55 UTC (2:55 am AKDT).
Due to the lack of seismic instrumentation in the region, only aftershocks of magnitude about 3 and above can be detected.
Last Modified: May 13, 2020