I gave up tonight's locking activity because the MC can't stay locked.
It seems that somehow the seismic noise became louder from about 1:00 AM.
I walked around the outside of the 40-m building to see what's going on, but no one was jumping or partying.
I am leaving the MC autolocker disabled so that the laser won't be driven crazy and the WFS won't kick the MC suspensions.
The attachment is a 3-hour trend of the seismometer outputs and the MC trans.