Earthquake swarm in NW Arizona keeps rolling on

(Source: Arizona Geological Survey)

More small earthquakes shook northwest Arizona Sunday adding to the list of temblors that have struck the area since March 29.

The Arizona Geological Survey said two quakes occurred, including a magnitude 2.6 quake at 12:07 a.m.

[RELATED: Strongest earthquake in recent swarm hits NW Arizona]

There has been a swarm of 21 quakes in an area along the Arizona-Nevada line south-southwest of Littlefield, AZ, which is also close to southwestern Utah and the frequency and span puzzles geologists.

NW Arizona earthquake swarm keeps rolling on with two events today, including M2.6 at 12:07 am. pic.twitter.com/9jYcHj9Hlx— AZ Geological Survey (@AZGeology) April 24, 2016

The survey said the area has several active faults and that its geologic features suggest there could be additional potentially active faults just north of the largest quake.

The largest in the swarm was a magnitude 3.4 quake was reported at 2:23 a.m. on April 8.Copyright 2016 KPHO/KTVK (KPHO Broadcasting Corporation). All rights reserved.

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