Following on the LHO recent watchdog upgrades (39392,39298) I was interested in seeing how the platforms and suspensions behaved during yesterday's earthquake (alog 36683).

At LHO, most platforms were already tripped when the earthquake happened (because of the vent, I suppose), except for the end stations, which did not fully trip during the earthquake, and were switched to the damping state instead (End-Y after the first wave peaked, and end-X after the second one). See figure 1.

At LLO, all platforms tripped, BSCs first, then HAMs when the large wave hit us, see figure 2.

It would be interesting to know how Sheila's sus guardian change helped keep the suspension damped at LHO (from the operators screen, all sus were green at the time of the eq, see screenshot from alog 36683).

Otherwise this is a positive first demonstration of the new sei watchdog scheme.