2
Recorded earthquakes
region
April 1981
south of Tonga earthquakes in April 1981
Earthquake archive for south of Tonga in April 1981: 2 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
5.1
Strongest magnitude
4.9
Average magnitude
33.0 km
Average depth
Strongest event
5.1
21 Apr 1981
Analysis of the recorded activity
During April 1981, 2 earthquakes were recorded near south of Tonga. Magnitudes ranged from 4.7 to 5.1, with an average of 4.9; depths ranged from 33.0 to 33.0 km, averaging 33.0 km. Activity extended from Sunday, April 12, 1981 to Tuesday, April 21, 1981 UTC.
Only 2 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
5.1
33.0 km
south of Tonga, Unknown
21 Apr 1981 08:58:09 UTC
4.7
33.0 km
south of Tonga, Unknown
12 Apr 1981 06:55:28 UTC