M3.4 earthquake 26km SW of Gustine, CA
A magnitude 3.4 earthquake struck 26km SW of Gustine, CA on Sat, Feb 20, 1932, 8:41 PM GMT-8 (04:41 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M4.5 16 km SE of Tres Pinos, California. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.4 (ml), minor
- Local time
- UTC
- 1932-02-21 04:41:11 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 37.079° N, 121.185° W
- Region
- California
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 99.0 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 294°, poorly surrounded by stations
- Stations used
- 3
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3358614. Read Tue, Sep 22, 2026, 7:42 AM UTC.