M3.1 earthquake on Arizona-Utah border

A magnitude 3.1 earthquake just north of the Arizona-Utah border on Friday night at 8:26 pm local (Utah) time was felt in the St. George area.  The star on the map at right marks the epicenter [credit, USGS].  The other dots are earthquakes recorded since 1990.  Last night's event was west of the Hurricane fault, a normal fault that dips to the west.