All earthquakesArizona

Arizona earthquakes in 1977

16 earthquakes of magnitude 2.5 or more were located in Arizona in 1977. The largest: M3.2 172km ESE of Fortuna Foothills, AZ, May 25, 1977.

From the USGS catalog. Times are local to each quake.

19761978

Map

Where every quake of 1977 was located in Arizona. Select one for its page.

Open the live map with earthquakes

Every quake of 1977

Magnitude 2.5 and up, newest first.

Month by month

Counted by UTC date, which is how the catalog files them.

MonthQuakesLargestWhere
January 197712.530km N of Kingman, AZ
February 19770
March 197713.1102km E of Kingman, AZ
April 197723.196km ESE of Kingman, AZ
May 197713.2172km ESE of Fortuna Foothills, AZ
June 197723.0102km ESE of Kingman, AZ
July 197713.1116km ESE of Kingman, AZ
August 19770
September 197743.093km ESE of Kingman, AZ
October 197723.1182km ESE of Fortuna Foothills, AZ
November 19770
December 197723.021km NNE of Kingman, AZ

What this means

The catalog is only as complete as the instruments of the time. Worldwide coverage of magnitude 5 and up dates from the 1960s, and of 4.5 from the 1990s; earlier years hold the large quakes and the ones near a station, so a low count in an early year means fewer instruments, not a quiet earth.

By year

Every year the USGS catalog covers.

Nearby

Arizona nowWorldwide in 1977

Sources

Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.