TITLE: 03/31 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY:

IFO is in NLN and OBSERVING as of 21:24 UTC

Overall calm final day of O4b with a successful comissioning session. Things of note:

• Lockloss 1: ETM Glitch Caused
• Lockloss 2: Wind Caused
  • We are more susceptible to wind coming in from the 40-70 degree range due to the one torn wind fence panel (attached screenshot). Elevated 0.3-1Hz and 0.03-0.1Hz EY ground motion was preventing locking for around 1 hr despite only 25-30 mph winds.
• Hanford Site called around 12:30 PT to warn of planned sirens and drills though we were unlocked

LOG: