USGS CONFIRMS BOOM WAS NOT AN EARTHQUAKE… The startling sonic boom and minor shaking experienced by thousands of people this morning across parts of central Escambia (AL) and southern Conecuh counties in south Alabama was NOT caused by an earthquake. I just received a call back from the U.S. Geological Survey. After geophysicists reviewed the seismology data AND your Facebook comments in my initial post this morning, the USGS says this was a sonic boom/shockwave event that could have been caused by low-flying military aircraft.
Thanks to each person who commented about their experience in the initial post here. It is always helpful to have “ground truth” reports for weather-related and non-weather-related events like this!