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More than 11,000 aftershocks have been cataloged, with thousands more that are too small to locate. The Earthquake Center has determined a magnitude of completeness for the catalog of M1.3.

The largest aftershock was a magnitude 5.7 and occurred six minutes after the mainshock. There have been 45 aftershocks of magnitude 4 or greater. More than 300 aftershocks have been reported felt.

 

Last Modified: April 27, 2020