ARIZONA EARTHQUAKES 1830-2023
ARIZONA EARTHQUAKE INFORMATION CENTER
Updated to February, 2023
NEW: download AEIC earthquake catalog in Google Earth kmz file updated to Aug, 2023 here
All times are Greenwich Mean Time (GMT)
Depths are expressed in kilometers and fixed at 10 where necessary
*FLAG = Seismic Research Station at Northern Arizona University, Flagstaff
**Origin Time = Times prior to 1910 are local Arizona time; times 1910 and after are Coordinated Universal Time
***MAG/INT = Magnitude or Intensity
Roman numerals indicate Modified Mercalli (MM) Intensities
Arabic numerals indicate local magnitude, ML
Magnitude with asterisk (*) indicate duration magnitude, MD
****4 * = Earthquakes which may locate in the Salton Trough region