Might be one the base in PCB. Whichever one it is, I can never remember the name, is always dropping big 'ole bombs and it shakes our house in Seagrove.
It happens all the time, it just hasn't happened much recently.
The unusual thing this morning is that it happened during a thunderstorm. That, for me, is a first. My initial reaction was "wow, that one was close", then I realized what it was. The dog, already trembling from the thunder, wound up panting under my feet.
Anyone remember the "shake" when they were testing the bunker bombs (or bunker bombers ... forgot what they are called) a few years back? We were in Destin at that time and they would announce on the radio when to expect the the testing to occur.