Lockloss @ 18:33 UTC after 12.5 hr lock stretch - link to lockloss tool
Looks to be from some very local sudden ground motion. USGS has nothing to report yet, but site seismometers and Picket Fence certainly saw activity.
Now looks to be due to a M4.4 EQ from Fort St. John, Canada.
Now looks to be due to a M4.4 EQ from Fort St. John, Canada.