There was a magnitude 1.1 earthquake in northwest Arizona about 8:43 p.m. last night after several days of no activity in the area. We have seen over 60 earthquakes in this area since March 28. [Right, orange star marks last night's epicenter. Red lines are active faults. Credit, USGS]
The Arizona [Tucson] Daily Star ran a front page story by science reporter Tom Beal in Sunday's paper about this swarm and another one in southeast Arizona near Duncan.
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