USGS Confirms M 3.9 Experimental Explosion Near Ponce Inlet, Florida

M 3.9 Experimental Explosion – 147 Km ENE of Ponce Inlet, Florida

The USGS National Earthquake Information Center has identified a magnitude 3.9 event as an experimental explosion rather than a natural earthquake. Occurring 147 kilometers east-northeast of Ponce Inlet, Florida, this event matches the ground motion patterns typical of Navy Full Ship Shock Trials conducted in the region. With a depth of zero kilometers, the data confirms the artificial nature of the seismic activity.

"The recorded ground motions from this event are more typical of an explosion than a naturally occurring earthquake."