Lockloss @ 16:44 UTC after 12.5 hours locked - link to lockloss tool
M6.1 EQ out of Kamchatka followed by a M5.1 aftershock. I dropped observing at 16:26 UTC as it was coming in to engage the hi-gain ASC, which seemed to help for a while until the aftershock hit and peakmon reached about 2300 counts. Holding H1 in 'DOWN' until the ground settles.
H1 back to observing at 20:34 UTC. Ran an alignment after the ground motion calmed down, then while locking, two locklosses during DRMI acquisition made for a longer overall relock time. MICH_FRINGES was needed after the second DRMI lockloss.