Labrat
You probably see more of them for fairly unremarkable by comparison gas line explosions, for underground lines.
Detecting an explosion by seismic activity, is not so much about the amount of energy, more about where its going (into the ground or into the air).
All told its a tragic event though.
5K 20:23 (Vdot 48.7) 9/9/17
10K 44:06 (Vdot 46.3) 3/11/17
HM 1:33:48 (Vdot 48.6) 11/11/17
FM 4:13:43 (Vdot 35.4) 3/4/18
race obsessed
Texas checking in - no where near me, though I have driven by West many times.