4
Recorded earthquakes
city
1984
Napa earthquakes in 1984
Earthquake archive for Napa in 1984: 4 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.3
Strongest magnitude
4.2
Average magnitude
6.1 km
Average depth
Strongest event
4.3
24 Sep 1984
Sacramento, United States
Depth
4.5 km
UTC
14:40:22
Coordinates
38.989, -122.500
Analysis of the recorded activity
During 1984, 4 earthquakes were recorded near Napa. Magnitudes ranged from 4.0 to 4.3, with an average of 4.2; depths ranged from 1.7 to 11.3 km, averaging 6.1 km. Activity extended from Sunday, March 18, 1984 to Monday, September 24, 1984 UTC.
Only 4 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.3
4.5 km
Sacramento, United States
24 Sep 1984 14:40:22 UTC
4.3
7.0 km
Oakland, United States
27 Mar 1984 03:36:35 UTC
4.1
11.3 km
Livermore, United States
18 Mar 1984 05:27:29 UTC
4.0
1.7 km
Santa Rosa, United States
22 Sep 1984 18:52:03 UTC