A magnitude 3.6 earthquake was felt from the Chino Valley to Winslow and as far south as Phoenix. The quake occurred at 11:20 a.m. local time today, 18 miles NNW of Prescott. [right, location map of quake - star - with historical quakes shown as small orange dots. Credit, USGS]
As of 8 pm tonight, 540 people have reported they felt the event on the USGS website.
The area has had little historical seismic activity.
AZGS recently posted two short videos on fault activity on the Little Chino and Big Chino faults.
update 10-16: The Prescott Courier reports that the magnitude is revised to 3.2 and the location based on additional analysis by Dr. David Brumbaugh at the Arizona Earthquake Information Center at Northern Arizona University.
4th one this year, and none of them on a fault yet.
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This one made a sharp crack noise, and shook the house. Thought a tree had fallen and hit it, and broken a window
I live about 1 & 1/2 miles perhaps 2 miles from where I believe the epicenter of Monday's earthquake 10-25-11. I thought a plane had crashed or an explosion had gone off. I've experienced many earthquakes in So. California. This was a very, very strong jolt. Soon after, our arena became flooded because of a broken water line. We believe the jolt broke the pipe buried at least 2 feet in the ground.
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