3
Recorded earthquakes
region
October 1999
Mariana Islands region earthquakes in October 1999
Earthquake archive for Mariana Islands region in October 1999: 3 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.9
Strongest magnitude
4.4
Average magnitude
143.7 km
Average depth
Strongest event
4.9
18 Oct 1999
Mariana Islands region, Unknown
Depth
161.7 km
UTC
01:39:57
Coordinates
21.301, 144.964
Analysis of the recorded activity
During October 1999, 3 earthquakes were recorded near Mariana Islands region. Magnitudes ranged from 4.1 to 4.9, with an average of 4.4; depths ranged from 33.0 to 236.4 km, averaging 143.7 km. Activity extended from Monday, October 18, 1999 to Saturday, October 23, 1999 UTC.
Only 3 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.9
161.7 km
Mariana Islands region, Unknown
18 Oct 1999 01:39:57 UTC
4.2
236.4 km
Mariana Islands region, Unknown
23 Oct 1999 12:31:34 UTC
4.1
33.0 km
Mariana Islands region, Unknown
20 Oct 1999 08:36:02 UTC