Loud boom heard in Boston likely exploding meteor above ocean - WBUR

The loud boom and shaking reported across Greater Boston around 2:11 p.m. was caused by a meteor that exploded off the Massachusetts coast, according to NASA. The object was roughly five feet across and about 5.6 metric tons, traveled northwest to southeast for roughly 26 miles, and broke up near 31 miles altitude, releasing energy equivalent to about 230 tons of TNT; analysts are determining whether fragments reached the ocean. Local observations and meteorologist reports helped identify the event and will assist investigators locating any debris.