I'm a bit south of you and hear (and feel) "energetic material" events from Picatinny Arsenal and more often the from large rock quarry just to the east of that ARDEC facility.
My usual rule of thumb is that if I can feel it - it's the quarry, if I hear it - it's Picatinny performing some testing.
Btw, we get a notification when the arsenal is performing some testing that would be relatively loud outside of the facility borders. It has never been as loud as 4th of July fireworks from nearby towns.
Notably, the arsenal is an R&D and project management facility (with a pretty good golf course, btw) and doesn't have large quantities of explosives on site, so an accident the scale of what happened to the Hercules facility in Kenvil (Roxbury) in 1989 probably couldn't happen. They also take extensive precautions for handling these materials, and keep them relatively widely dispersed.
This also reminds me of the earthquake centered in the Randolph NJ area about 9 years ago.
Here is an interesting earthquake database for that area:
https://earthquaketrack.com/us-nj-randolph/recent