2
Recorded earthquakes
region
October 1991
Iwaki earthquakes in October 1991
Earthquake archive for Iwaki in October 1991: 2 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.9
Strongest magnitude
4.4
Average magnitude
30.0 km
Average depth
Strongest event
4.9
23 Oct 1991
Iwaki, Japan
Depth
26.9 km
UTC
18:22:49
Coordinates
37.178, 142.085
Analysis of the recorded activity
During October 1991, 2 earthquakes were recorded near Iwaki. Magnitudes ranged from 4.0 to 4.9, with an average of 4.5; depths ranged from 26.9 to 33.0 km, averaging 30.0 km. Activity extended from Wednesday, October 23, 1991 to Wednesday, October 30, 1991 UTC.
Only 2 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.9
26.9 km
Iwaki, Japan
23 Oct 1991 18:22:49 UTC
4.0
33.0 km
Iwaki, Japan
30 Oct 1991 12:42:06 UTC