M2.4 earthquake 4km SW of Paramount, CA
A magnitude 2.4 earthquake struck 4km SW of Paramount, CA on Wed, Apr 6, 1966, 1:20 AM GMT-8 (09:20 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M2.6 23km WSW of Newport 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
- 2.4 (Mh), micro
- Magnitude from
- Southern California Seismic Network
- Local time
- UTC
- 1966-04-06 09:20:10 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 33.861° N, 118.190° 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 2.3 km horizontally, 31.6 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 208°, poorly surrounded by stations
- Stations used
- 7
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 3 in the 30 days before it.
After
- 2.21km E of Fontana, CA · 22085 days ago · 5 km deep · 73 km away
- 2.17km NNE of Castaic, CA · 22084 days ago · 16 km deep · 86 km away
- 2.110km NNE of Simi Valley, CA · 22071 days ago · 6 km deep · 73 km away
- 2.43km NW of Sunland, CA · 22062 days ago · 6 km deep · 48 km away
- 2.623km WSW of Newport Beach, CA · 22041 days ago · 6 km deep · 37 km away
- 2.42km WSW of Granada Hills, CA · 22039 days ago · 7 km deep · 54 km away
- 2.12km SSW of Colton, CA · 22039 days ago · 6 km deep · 83 km away
- 2.65km S of Loma Linda, CA · 22038 days ago · 10 km deep · 87 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3330234. Read Thu, Oct 1, 2026, 6:45 AM UTC.