M2.7 earthquake 2km SE of Carson, CA
A magnitude 2.7 earthquake struck 2km SE of Carson, CA on Fri, Mar 29, 1940, 8:09 PM GMT-8 (04:09 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M4.3 2km NW of Grand Terrace, 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 (ml), micro
- Local time
- UTC
- 1940-03-30 04:09:24 UTC
- Depth
- 0.1 km (0.0 mi), shallow
- Epicenter
- 33.820° N, 118.262° 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 1.8 km horizontally, 3.0 km in depth
- Magnitude uncertainty
- ±0.16
- Depth from
- From location
- Station coverage gap
- 74°
- 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: 5 in the 60 days after this one and 6 in the 30 days before it.
After
- 3.04km ENE of Loma Linda, CA · 31580 days ago · 15 km deep · 99 km away
- 4.32km NW of Grand Terrace, CA · 31574 days ago · 12 km deep · 89 km away
- 3.48km WSW of Palos Verdes Estates, CA · 31568 days ago · 6 km deep · 20 km away
- 3.928km SSE of Port Hueneme, CA · 31545 days ago · 6 km deep · 81 km away
- 3.24km WSW of Mead Valley, CA · 31540 days ago · 6 km deep · 86 km away
Before
- 3.136km NNW of Santa Barbara Is., CA · 31596 days ago · 6 km deep · 83 km away
- 2.47km SE of Loma Linda, CA · 31608 days ago · 18 km deep · 98 km away
- 2.44km E of Marina del Rey, CA · 31609 days ago · 6 km deep · 22 km away
- 2.63km SSE of San Bernardino, CA · 31611 days ago · 18 km deep · 96 km away
- 2.61km WNW of Bell, CA · 31612 days ago · 6 km deep · 19 km away
- 3.20km S of Colton, CA · 31618 days ago · 6 km deep · 92 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3365251. Read Mon, Sep 28, 2026, 9:57 PM UTC.