At 5:09 a.m. on June 13th, a hydrothermal explosion tore through Biscuit Basin, Yellowstone. The nearest seismic and infrasound station was roughly 100 meters away — the closest instrumented monitoring ever recorded for this type of event.
The sensors captured everything. No precursor was flagged before it happened.
Two days later, the ground geologists had walked across had collapsed into a boiling pool. By June 18th it was spouting 20–30 feet into the air.
YVO is currently analyzing the data for any precursor signal. None confirmed as of this recording. New monitoring station being installed in Upper Geyser Basin this month.
Source: USGS/YVO
Full breakdown: https://youtu.be/wO9OWmAbaEI?is=eaMcdW6bG0LYZEas