M3.9 earthquake 3km W of Grapevine, CA
A magnitude 3.9 earthquake struck 3km W of Grapevine, CA on Thu, Apr 11, 1963, 9:20 PM GMT-8 (05:20 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (ml), minor
- Local time
- UTC
- 1963-04-12 05:20:44 UTC
- Depth
- 10.2 km (6.3 mi), shallow
- Epicenter
- 34.939° N, 118.967° 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 0.8 km horizontally, 1.5 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 92°
- Stations used
- 11
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 2 in the 30 days before it.
After
- 3.425km NE of Arvin, CA · 23165 days ago · 0 km deep · 57 km away
- 2.824km SSW of Bodfish, CA · 23165 days ago · 1 km deep · 60 km away
- 3.32km S of Valencia, CA · 23152 days ago · 6 km deep · 66 km away
- 2.918km W of Ventura, CA · 23151 days ago · 6 km deep · 87 km away
- 3.28km ENE of Ventura, CA · 23139 days ago · 6 km deep · 72 km away
- 2.513km N of Fillmore, CA · 23134 days ago · 6 km deep · 47 km away
- 3.86km W of Grapevine, CA · 23128 days ago · 11 km deep · 2 km away
- 2.511km S of Carpinteria, CA · 23125 days ago · 8 km deep · 88 km away
Before
Earthquakes todayCalifornia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3331393. Read Tue, Sep 22, 2026, 10:29 PM UTC.