This morning I spent some time looking for more MC1 and MC3 glitches, reported by Cheryl, Jenne, Sheila yesterday https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=49257

The summary from Tuesday forward is that - 

• Bit of a struggle to recover lock from Tuesday, but then ~6ish hour lock into graveyard shift
• 5am (local) breaks lock - Cheryl find 1st glitch as culprit on MC3
• 3x more glitches:
• ~7am (MC3 only, mostly T1,2,3, little blip on other OSEMs)
• ~9am (MC3 only,mostly T1,2,3, little blip on other OSEMs )
• ~11:30am (MC1 only, mostly T2,l T3)
• NOON Fil does some power cycling (Coil drivers, AI chassis)
• ~5pm AA chassis power cycled
• There is only 1 little tiny glitch on MC3-T1 OSEM after the power cycles, at ~11pm last night...

It's not obvious that these glitches are continuing.  We scanned back a week and did not see any such glitches prior to their start at 5am local Wed. 

Also, they do not appear on PR2 (PRM and MC2 are hard to see due to all of the actuation on them which causes the signal to jump around.)

(Betsy, Fil, Marc)