YMC helicorder Feb 17-18, 2019

Webicorder for station YMC (the closest station to the current swarm) for a 24-hour period spanning February 17-18, 2018. Each horizontal line is 30 minutes, and each spike is an earthquake. The vast majority of earthquakes are magnitudes of zero and below that may only have been recorded at this station and, therefore, are not locatable (an earthquake must be well recorded at 4 stations to be located).