M3.1 earthquake 32km WNW of Ludlow, CA
A magnitude 3.1 earthquake struck 32km WNW of Ludlow, CA on Fri, Sep 2, 1949, 9:50 AM GMT-8 (17:50 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.9 37km E of Barstow, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (ml), minor
- Local time
- UTC
- 1949-09-02 17:50:41 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 34.843° N, 116.477° 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 1.9 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- Operator assigned
- Station coverage gap
- 235°, poorly surrounded by stations
- Stations used
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.937km E of Barstow, CA · 28127 days ago · 6 km deep · 14 km away
- 3.810km SSW of Morongo Valley, CA · 28123 days ago · 6 km deep · 98 km away
- 2.819km NE of Barstow, CA · 28116 days ago · 6 km deep · 39 km away
- 2.88km N of Cabazon, CA · 28112 days ago · 6 km deep · 99 km away
- 2.821km ENE of Barstow, CA · 28101 days ago · 6 km deep · 33 km away
- 2.619km SSE of Fort Irwin, CA · 28094 days ago · 6 km deep · 32 km away
- 2.65km W of Desert Hot Springs, CA · 28088 days ago · 6 km deep · 98 km away
- 2.78km NNW of Morongo Valley, CA · 28085 days ago · 6 km deep · 83 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3355672. Read Tue, Sep 22, 2026, 4:51 PM UTC.