Black Canyon City quake locations refined; seismograph recording posted

We have updated the locations of last nights earthquakes near Black Canyon City, using the Arizona seismic stations in the  AZGS network.












Jeri Young also passed along this shot of the seismic signals received by the nearest station in our network, Strawberry/Payson X16A, about 65 km east of last night's quakes.   All three of the bigger quakes, M3.3, M4.1 and M4.0, are easily visible by the red waveforms at their start.