Here's what he or she wrote about the experience:
This is the strange noise I've been hearing periodically over the past couple of years. Occurrences have been frequent lately, and I notice it tends to happen before and/or during rain and other impending weather warnings like snow storms. This video was taken outside my front door after 2am on March 4th. I starting hearing it tonight around 6 or 7pm and thought it was just helicopters, but the sound never faded. It's hard to pinpoint where the noise is coming from. No aircraft in sight. Doesn't help that it was overcast.
Of course, that's not the only thing to consider. The fact that observers can never identify the general direction in which such sounds are coming from - above or below - suggests an electrophonic EM effect (literally, electromagnetic waves that would not normally be audible) resulting from unusual seismic activity. And then we need to consider that the seismic activity (below) and the changing composition of the atmosphere (above) may be contemporaneous - both have a strong electrical component, and so both are probably working in tandem.