So after the long overnight-lock, H1 dropped out of lock mid-shift (Robert was at EY, but we were running ragged for the last few hours with fairly high low-frequency seismic motion).  

• Took over 3.5hrs to get back to Observing
• There were many types of issues, IMC would drop out, ALS locking was hit or miss, and then DRMI locking wasn't trivial~~And we watched our noisy envirnoment.
  • A word about this seismic motion.  We see useism slowly trend up and down without raising an eyebrow.  The odd occurrence last night/today is that the EQ band (0.03-0.1Hz) also slowly increased over the last 18hrs up to 0.3um/s.  (the normal behavior here is that it would stay flat, and only have "quick" increases due to EQs, wind gusts, or people walking around seismometers)
•  We tried switching to all 90mHz Blends, back to our "standard 45mHz", and currently have ALL 45mHz blends engaged.
• After 1-2hrs of locking, H1 finally made it!  Took it to Observing (after accepting with the 45mHz filters for the ETMs).

Note:

There were a few new tricks which Sheila taught me when we were working on locking H1 in these noisy conditions:

1)  When the ALSy was having trouble locking, we did a Clear History (yellow button on the ALS screen).  This then gave us a very misaligned Y-arm (but this was taken care of fairly easily by adjusting only yaw on only ETMy).

2) While waiting for PRMI, POP 18 & 90 looked pretty bad.  So, while in this state, the PRM was misaligned and then we adjusted the BS by eye while looking at ASAIR video.

These were two new tricks which I was not aware of.