2
Recorded earthquakes
city
1999
Pacifica earthquakes in 1999
Earthquake archive for Pacifica in 1999: 2 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.6
Strongest magnitude
4.4
Average magnitude
8.3 km
Average depth
Strongest event
4.6
18 Aug 1999
San Rafael, United States
Depth
7.7 km
UTC
01:06:18
Coordinates
37.907, -122.687
Analysis of the recorded activity
During 1999, 2 earthquakes were recorded near Pacifica. Magnitudes ranged from 4.2 to 4.6, with an average of 4.4; depths ranged from 7.7 to 9.0 km, averaging 8.3 km. Activity extended from Wednesday, August 18, 1999 to Wednesday, September 22, 1999 UTC.
Only 2 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.6
7.7 km
San Rafael, United States
18 Aug 1999 01:06:18 UTC
4.2
9.0 km
Santa Rosa, United States
22 Sep 1999 22:27:13 UTC