M2.7 earthquake 12km NW of Ludlow, CA
A magnitude 2.7 earthquake struck 12km NW of Ludlow, CA on Thu, Jul 28, 1938, 6:22 AM GMT-8 (14:22 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.5 26km NNW of Ludlow, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.7 (mh), micro
- Local time
- UTC
- 1938-07-28 14:22:27 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 34.806° N, 116.233° 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 4.0 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- Operator assigned
- Station coverage gap
- 340°, 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: 5 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.526km NNW of Ludlow, CA · 32196 days ago · 6 km deep · 14 km away
- 2.517km WNW of Morongo Valley, CA · 32184 days ago · 6 km deep · 93 km away
- 4.515km NE of Ludlow, CA · 32177 days ago · 6 km deep · 17 km away
- 3.413km NE of Barstow, CA · 32141 days ago · 6 km deep · 65 km away
- 2.78km E of Morongo Valley, CA · 32141 days ago · 6 km deep · 88 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3364708. Read Tue, Sep 22, 2026, 3:51 AM UTC.