Yesterday's magnitude 7.0 earthquake occurred at 21:53 UTC (Jan 13) and the event was well recorded in Arizona. At right, the Snowflake seismic station (X18A) in the Arizona Broadband Seismic Network shows the main energy arriving here at roughly 20-30 minutes after the quake occurred.
All of the Arizona stations can be viewed at http://azgs.az.gov/fema_award.shtml