Magnitude 3.5 - WESTERN FLORIDA

[thirtyhz]

Okay....what the heck is going on here?  Quake depth at 3.1 miles, just offshore. 

Friday, February 18, 2011 at 23:15:34 UTC
Friday, February 18, 2011 at 05:15:34 PM at epicenter
 
Location 30.180°N, 87.848°W
Depth 5 km (3.1 miles) set by location program
Distances 60 km (35 miles) SSE of Mobile, Alabama
65 km (40 miles) WSW of Pensacola, Florida
70 km (45 miles) ESE of Pascagoula, Mississippi
285 km (175 miles) SSW of MONTGOMERY, Alabama
 
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/us2011hmbx.php

[sparrow]

what about that depth?!

[thirtyhz]

The 3.1 mile depth indicates the quake took place in the bedrock (earth crust) in this area.  Many quakes register this depth.  This happens in Alaska...just offshore, in relatively shallow water, quite often.

But that area also sits on an active plate boundary....