3
Recorded earthquakes
city
1986
Petaluma earthquakes in 1986
Earthquake archive for Petaluma in 1986: 3 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.2
Strongest magnitude
4.1
Average magnitude
9.0 km
Average depth
Strongest event
4.2
11 Oct 1986
Hayward, United States
Depth
9.0 km
UTC
05:17:35
Coordinates
37.821, -121.966
Analysis of the recorded activity
During 1986, 3 earthquakes were recorded near Petaluma. Magnitudes ranged from 4.0 to 4.2, with an average of 4.1; depths ranged from 6.4 to 11.6 km, averaging 9.0 km. Activity extended from Saturday, March 29, 1986 to Sunday, October 12, 1986 UTC.
Only 3 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.2
9.0 km
Hayward, United States
11 Oct 1986 05:17:35 UTC
4.1
11.6 km
San Francisco, United States
29 Mar 1986 16:24:03 UTC
4.0
6.4 km
Santa Rosa, United States
12 Oct 1986 06:43:01 UTC