Shock waves traveling faster than the speed of sound were likely caused by nearby aircraft
Tremors felt in parts of the northeastern U.S. on Thursday, including New York’s Long Island area and southern New Jersey, were the result of a series of sonic booms, a regional seismologist said.
https://www.wsj.com/articles/sonic-booms-reported-in-northeastern-u-s-1454018777?mod=e2tw
