On the night of February 17-18, Moscow time (February 17 local time), a series of strong seismic shocks occurred in the Yellowstone caldera area:
The US Geological Survey reports 5 seismic events in the 2.0 - 3.0 region, however, judging by the abundance of red on the sensors, the numbers are greatly underestimated.
The same idea about the underestimation of the magnitude is suggested by the data from GPS sensors, which indicate significant fluctuations in the surface level in this area:
Finally, Mary Greeley provided unique photos of the caldera from February 2-17 in her new video:
As you can see from the photographs, widespread sinkholes are observed by visitors to the park. This indicates the melting and collapse of the edges of the magma chamber, located deep under the soil.
Promotional video:
Small earthquakes in the dangerous caldera area are to a certain extent the norm, they can be observed for 300,000 years or more. However, if the USGS rushed to sharply underestimate the data, the situation in the caldera is definitely dangerous. If in the coming days the seismic sensors available to the public Internet stop working (will be disabled), then everything in Yellowstone has become very bad.
We follow the development of events.