[h=1]Rare Earthquake Trio Shakes Phoenix: What Happened?[/h]
by
Stephanie Pappas, Live Science Contributor | November 03, 2015 11:03am ET
A rare trio of earthquakes shook central Arizona Sunday (Nov. 1), startling residents in Phoenix and the surrounding areas.
The largest quake was a magnitude-4.1 temblor, which hit at 11:29 p.m. local time. It was preceded by a magnitude-3.2 foreshock at 8:59 p.m. and was followed by a magnitude-4.0 aftershock at 11:49 p.m. Smaller aftershocks may follow, said Ryan Porter, a seismologist at Northern Arizona University.
Earthquakes are "pretty uncommon for Arizona," Porter told Live Science. "So it's not unexpected, but it's not a very common event." ...
