There was a second earthquake on Wednesday in northern Arizona. A magnitude 2.4 event occurred at 2:40 pm local time about 20-30 miles west of Fredonia, where a magnitude 2.2 quake had hit at 2:05 a.m. that morning. [Right, orange star marks the epicenter. Red lines are active faults. Credit Univ. of Utah Seismograph Stations and USGS]
The bottom map shows location of the earlier event.