Thursday, December 15, 2011
Aftershock to M3.1 quake
It looks like there was an aftershock to Tuesday's M=3.1 quake south of Colorado City in northern Arizona. At 5:42 PM local time there was a magnitude 2.8 quake at about the same location. Technically it qualifies as an aftershock to the larger, preceding event.
[Right, location of aftershock - star - and historical seismicity in the region. Credit, USGS]
at 9:00 AM