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Aftershock zone estimates constrain the size of the M8.2 rupture to about 125 by 62 miles (200 km by 100 km). This earthquake displayed a thrust fault focal mechanism typical of an earthquake along the Alaska-Aleutian subduction zone interface. Preliminary finite fault inversions indicate that the maximum slip along the surface of the fault was between 2.5m and 3m.

This is an ongoing sequence, and these pages will be updated as the event unfolds.

Last Modified: July 29, 2021