M2.7 earthquake 20km NW of Grapevine, CA
A magnitude 2.7 earthquake struck 20km NW of Grapevine, CA on Sat, Apr 16, 1966, 6:10 AM GMT-8 (14:10 UTC), 1 km (0 mi) below the surface.
A larger quake followed: M3.0 10km N of Lamont, 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, local (Richter)), micro
- Magnitude from
- Southern California Seismic Network
- Local time
- UTC
- 1966-04-16 14:10:55 UTC
- Depth
- 0.7 km (0.5 mi), shallow
- Epicenter
- 35.059° N, 119.105° 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 1.3 km horizontally, 2.3 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 158°
- Stations used
- 9
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.926km SSW of Bodfish, CA · 22077 days ago · 6 km deep · 59 km away
- 2.110km NNE of Simi Valley, CA · 22073 days ago · 6 km deep · 86 km away
- 2.95km WSW of Grapevine, CA · 22069 days ago · 15 km deep · 18 km away
- 3.010km N of Lamont, CA · 22044 days ago · 6 km deep · 36 km away
- 2.417km SSE of Carpinteria, CA · 22036 days ago · 17 km deep · 95 km away
- 2.922km NNW of Tehachapi, CA · 22035 days ago · 6 km deep · 59 km away
- 2.825km NNW of Tehachapi, CA · 22028 days ago · 6 km deep · 59 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3330242. Read Sat, Oct 3, 2026, 4:29 PM UTC.