[JennysCool]

from last April:

http://www.nj.com/mercer/index.ssf/2015/04/bordentown_city_residents_report_mysterious_explos.html

From that article. Wonder if there is a thaw going on?:

Hand, of the Bordentown Township police, offered this possible explanation: the thawing of the ground due to the intense cold weather this winter. He said a few weeks ago, his wife heard a loud bang in their home, and he heard the same sound while watching television at about 10 p.m.

“It sounded like a car hit the back of our house,” Hand said. He checked the basement, and all his pipes were intact. He then learned from a television news program that the ground can make booming and loud cracking sounds when thawing from a prolonged cold period. “That’s just my two cents,” he said.

[mmichaels1970]

From that article. Wonder if there is a thaw going on?:

It would make sense if they weren't reporting sonic booms. We have had ice quakes here in Ohio. I remember last winter houses and buildings shaking and booming due to the intense cold and ice. Our building's aluminum siding and roof was booming continuously.

[Shady]

No doubt, it was the NORKS.