M4.0 Crescent, Oklahoma aftershock

Today, 15May2018 at 13:40 hrs UTC (08:40am CST), a M4.0 earthquake after shock occurred, again, in Crescent, OK.

TXESP’s EQ1 and Raspberry Shake (LP 1.2 Hz filter) seismometers recorded some wave arrivals – predominantly the P, S, Surface, PcP and PcS interpretations (see below).  Today’s event was approximately 6 polar deg away from station E1TX.  NOTE the similrities between the two seismograms; further, review that the 15May2018 seismograms are very similar to the 14May2018 seismograms.

May 15, 2018


May 14, 2018



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