Description

Occasionally during the evening/late night (such as the night of 4/22/24 and early morning of 4/23/24), there is a high pitched ringing sound outside somewhere near Central Square area going on for hours and hours on end (the entire night). I can hear very clearly it in my apartment building with all windows closed (I opened the windows to confirm the source was definitely outside, probably at least a few blocks away). We are sometimes unable to sleep because of it. Others on online forums for the Cambridge area seem to be hearing it as well.