M2.8 earthquake 13km ENE of Coso Junction, CA
A magnitude 2.8 earthquake struck 13km ENE of Coso Junction, CA on Wed, May 17, 1939, 3:07 AM GMT-8 (11:07 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.0 16km WNW of Wofford Heights, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.8 (ml), micro
- Local time
- UTC
- 1939-05-17 11:07:27 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 36.094° N, 117.822° 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 1.4 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- Operator assigned
- Station coverage gap
- 187°, poorly surrounded by stations
- Stations used
- 4
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 2 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 ci3365005. Read Tue, Sep 22, 2026, 8:55 AM UTC.