Friday, November 20, 2015

Two more small quakes in northwest Arizona

 Northwest Arizona had its fifth and sixth small earthquakes in the last week and a half, today just before noon. A magnitude 2.9 event at 11:48 a.m., local time was followed ten minutes later by a magnitude 1.5 quake very close by that was likely an aftershock.    The events occurred about 33 miles southeast of Littlefield, Arizona, and are in the same area as a magnitude    quake that occurred on November 14.   [Right, the epicenters of today's quakes are in orange. Last week's event in yellow. Red lines on are faults. Credit, USGS]

The quakes are in the midst of a number of active faults that comprise the southern end of the Intermountain Seismic Belt and close to the Washington fault.

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