M2.0 earthquake 12km SSE of Acton, CA
A magnitude 2.0 earthquake struck 12km SSE of Acton, CA on Fri, Jan 31, 1941, 10:58 AM GMT-8 (18:58 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M3.0 4km ENE of Devore, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.0 (ml), micro
- Local time
- UTC
- 1941-01-31 18:58:19 UTC
- Depth
- 0.0 km (0.0 mi), shallow
- Epicenter
- 34.365° N, 118.158° 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 1.2 km horizontally, 2.1 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 295°, 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: 9 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.04km ENE of Devore, CA · 31262 days ago · 6 km deep · 75 km away
- 3.66km NNW of Piru, CA · 31260 days ago · 6 km deep · 62 km away
- 2.93km NNE of Torrance, CA · 31258 days ago · 6 km deep · 58 km away
- 2.51km NNW of Lawndale, CA · 31258 days ago · 6 km deep · 55 km away
- 2.03km ESE of Century City, CA · 31250 days ago · 3 km deep · 41 km away
- 2.52km NNW of Bradbury, CA · 31237 days ago · 1 km deep · 28 km away
- 3.111km ENE of Trabuco Canyon, CA · 31231 days ago · 6 km deep · 96 km away
- 4.05km NNW of Devore, CA · 31227 days ago · 3 km deep · 68 km away
- 3.011km S of Seal Beach, CA · 31223 days ago · 6 km deep · 81 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3365545. Read Tue, Sep 22, 2026, 12:13 PM UTC.