M2.5 earthquake 10km WNW of Avalon, CA
A magnitude 2.5 earthquake struck 10km WNW of Avalon, CA on Mon, Dec 6, 1943, 11:00 AM GMT-7 (18:00 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.1 3km NNW of Seal Beach, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.5 (ML, local (Richter)), micro
- Magnitude from
- Southern California Seismic Network
- Local time
- UTC
- 1943-12-06 18:00:48 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 33.387° N, 118.420° 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 3.4 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- Operator assigned
- Station coverage gap
- 284°, 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: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.730km SW of San Clemente Is. (SE tip), CA · 30253 days ago · 6 km deep · 84 km away
- 2.72km WSW of Inglewood, CA · 30253 days ago · 0 km deep · 63 km away
- 2.810km WSW of El Segundo, CA · 30239 days ago · 6 km deep · 57 km away
- 3.13km NNW of Seal Beach, CA · 30215 days ago · 6 km deep · 51 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3366449. Read Mon, Oct 5, 2026, 6:30 AM UTC.