Lockloss @ 01:35 UTC - link to lockloss tool
PI mode 28 suddenly rang up about 5 minutes before the lockloss (almost exactly 2 hours since reaching NLN), callouts for mode 29 started also soon after. It appears that Guardian was trying to damp mode 29 instead of 28; I recall these modes being faily close together, but I wonder if this is the best way to damp this mode as Guardian was unsuccessful. I, unfortunately, was not quick enough to intervene.
While the PIs were rung up shortly before the lockloss, I noticed the OMC TRANS camera start shaking like it has before (most recently in alog79748), and I don't recall seeing it do that so far this weekend.
H1 back to observing at 03:46 UTC. Fully automatic relock preceded by an initial alignment.
While relocking following this lockloss, I changed the nominal input max power back to 60W at Naoki's recommendation to hopefully avoid these 80kHz PIs.