jeffrey.kissel@LIGO.ORG - posted 08:51, Thursday 11 December 2025 - last comment - 09:06, Thursday 11 December 2025(88473)
It's been ... WINDY.
J. Kissel Post Dec 4th power outage, we've have an EPIC week of windstorms that have inhibited recovery effort, which has delayed upgrade progress. The summary pages (on their 24 hour cadence) and the OPS logs / environment summary don't really convey this well, so here's a citable link to show how bad last Friday (12/05), Monday (12/08), and Wednesday (12/10) were in terms of wind. Given the normal work weekend, it means that we really haven't had a conducive environment to recover from even a normal lockloss, let alone a 2-hour site-wide power outage. The attached screenshot is of the MAX minute trends (NOT the MEAN, to convey how bad it was) of wind speed at each station in UTC time. The 16:00 UTC hour mark is 08:00 PST -- the rough start of the human work day, so the vertical grid is marking the work days. The arrow (and period where there's red-dashed 0 MPH no data) shows the 12/04 power outage. The horizontal bar shows the weekend when we humans were trying to recover ourselves and not the IFO.
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Oh right -- and also on Monday, even though the wind wasn't *that* bad, the Earth was mad from the after shocks of 7.0 mag Alaskan EQ, and there were end-station Software Watchdog trips related to it that -- because of an oversight in watchdog calibration -- scared everyone into thinking we should "stand down until we we figure out if this was because the hardware upgrades or power outage." See LHO:88399 and LHO:88415. So, Monday was a wash for environmental reasons too.
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