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Geologic Hazards in Arizona | Earthquakes

ARIZONA EARTHQUAKES

While Arizona is not as seismically active as California, Nevada or Utah, we do experience earthquakes, some of them potentially damaging.

To monitor seismic activity, the Arizona Geological Survey operates the Arizona Broadband Seismic Network (ABSN) comprising 7 broadband seismometers placed strategically throughout the state. The seismometers send live data to AZGS which is used to locate Arizona earthquakes and determine their magnitude. For more information on earthquakes in Arizona visit Environmental Geology and Geologic Hazards in Arizona.

Recent Earthquake List

Listed in reverse chronological order below, and beginning in April 2013, are earthquakes of magnitude (M) 2.0 or greater recorded by ABSN seismometers events. For each event, we include day and time of the event, approximate location, magnitude, and depth.

Reported by Jeri J. Young, AZGS

July Earthquakes:

On July 7th at 01:38 MST, a magnitude (*Mw) 3.5 earthquake shook the towns of Fredonia, Jacobs Lake, and Havasu (Figure 1). The earthquake was followed by a series of aftershocks, with two registering Md ~ 2.0 and several in the 1.0 range.

May Earthquakes:

On May 28th, at 06:32 MST, a local Mag event of 2.7 and 6 km depth occurred approximately 31 km WSW of Page, AZ.

On May 21st at 02:37 MST, a duration Mag event of 2.1 and depth of 24 km occurred approximately 26 km southwest of Fredonia, AZ.

On May 20, 2013 at 14:25 MST, a duration Mag event of 2.4 and 20 km depth occurred 25 miles east of Globe, AZ.

On May 07, 2013 at 05:09 MST, a duration Magnitude event of 2.24 occurred along the Toroweap fault zone, approximately 90 km WSW of the South Rim of Grand Canyon. No felt reports were received by the Arizona Geological Survey or United States Geological Survey. The quake occurred at approximately 7 km depth.

On May 05, 2013 at 01:55 MST, a local Magnitude event of 2.3 occurred 19 km ESE of Littlefield, AZ. No felt reports were received by the Arizona Geological Survey or United States Geological Survey. The quake occurred at approximately 18.3 km depth.

April Earthquakes:

On April 26, 2013 at 13:59 MST, a duration Magnitude 2.4 earthquake occurred 18 km northeast of Strawberry, AZ. No felt reports were received by the Arizona Geological Survey or United States Geological Survey. The quake occurred at about 10 km depth.

On April 06, 2013 at 07:35 MST, a local Magnitude 2.8 earthquake occurred approximately 7 km southwest of LeChee, AZ. No felt reports were received by the Arizona Geological Survey or United States Geological Survey.  The quake occurred at about 10 km depth.

On April 02, 2013 at 08:17 MST, a local Magnitude 2.8 earthquake occurred approximately 11 km southeast of Fredonia, Arizona. No felt reports were received by the Arizona Geological Survey or United States Geological Survey. The quake occurred at approximately 20 km depth, therefore reducing the chance of being felt.

 

Earthquake Related Videos

Millions of people will Drop, Cover, and Hold On at 10:17 a.m. on October 17th in the 2013 Great Arizona ShakeOut!

File(s) Available for Download:

1887 | Sonoran Earthquake - "Not Our Fault"

1888 | Summary of Earthquake Activity in 1888

1889 | Summary of Earthquake Activity in 1989

1979 | Earthquakes of 1979

1980 | Casa Grande Bulge Cause Earthquakes in 1980

1990 | Toroweap Fault in 1990

1990-1991 | Summary of Earthquake Activity, 1990 and 1991

1991 | Horseshoe Fault in 1991

1992 | Landers Earthquake Sequence

1992 | St. George Earthquake in 1992

1993 | Seismic Hazard in Arizona in 1993

1994 | Arizona Earthquakes in 1994

1996 | Seismic Hazard in Flagstaff Area - 1996

2000 | Earthquake Hazards in Arizona

Summary of Earthquakes Causing Damage in Arizona

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