It's been a quiet shift. Omicron looks clean. Useism is trending upward. Wind ~15mph. We have been observing since 4.5 hours ago.

A note on a weird seismic behavior: This is the thrid night that I've noticed a big bumb in seismic activity at 3-10 Hz that doesn't correspond to high traffic time. The attached plots are the 3-10 Hz BLRMS from the summary page from Dec 25-27. On the 25th the peaks seems random starting at 6:00 UTC and ends at 14:00 UTC. But on the 26th and 27th the peaks are at ~10:30 UTC (2:30 in the morning local time!). And only the corner station sensors are seeing it. Unlike the noise from local traffic that usually shows up everywhere in the 1-3 Hz band. I don't really see this behavior prior to Dec 25 (usually the 3-10 Hz ground motion comes with the 1-3Hz motion). We have been having low wind over the past three days (below 10mph on Dec 25-26 and below 20mph on Dec27 until the time of this alog was posted). I can't say for sure that we suffer any range drop from it on Dec26-27 but the time when the seismic bumb appeared and disapeared almost coincided with the time that nasty glitches started and ended on Dec25 (which was not all caused by RF45. See alog24466 and alog24477). The h(t) spectrogram from Dec26-27 shows some excess noise just below 10Hz when the bumb occured. Anyway... I just found this behavior interesting and wanted to point it out.