3
Recorded earthquakes
city
1987
San Ramon earthquakes in 1987
Earthquake archive for San Ramon in 1987: 3 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.4
Strongest magnitude
4.2
Average magnitude
7.0 km
Average depth
Strongest event
4.4
22 Oct 1987
Antioch, United States
Depth
10.2 km
UTC
03:47:59
Coordinates
37.791, -121.745
Analysis of the recorded activity
During 1987, 3 earthquakes were recorded near San Ramon. Magnitudes ranged from 4.0 to 4.4, with an average of 4.2; depths ranged from 4.4 to 10.2 km, averaging 7.0 km. Activity extended from Monday, January 19, 1987 to Thursday, October 22, 1987 UTC.
Only 3 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.4
10.2 km
Antioch, United States
22 Oct 1987 03:47:59 UTC
4.2
6.6 km
Gilroy, United States
19 Jan 1987 08:09:04 UTC
4.0
4.4 km
San Francisco, United States
11 May 1987 06:45:47 UTC