M2.8 earthquake 12km N of Grapevine, CA
A magnitude 2.8 earthquake struck 12km N of Grapevine, CA on Sun, Dec 28, 1969, 10:26 AM GMT-8 (18:26 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.0 10km NNW of Santa Paula, CA. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.8 (ML, local (Richter)), micro
- Magnitude from
- Southern California Seismic Network
- Local time
- UTC
- 1969-12-28 18:26:27 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 35.048° N, 118.954° 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 2.0 km horizontally, 46.5 km in depth
- Magnitude uncertainty
- ±0.03
- Depth from
- Operator assigned
- Station coverage gap
- 153°
- 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: 9 in the 60 days after this one and 0 in the 30 days before it.
After
- 2.424km SSW of Bodfish, CA · 20722 days ago · 6 km deep · 50 km away
- 3.010km NNW of Santa Paula, CA · 20721 days ago · 6 km deep · 70 km away
- 2.212km SSE of Bodfish, CA · 20720 days ago · 6 km deep · 69 km away
- 2.012km SSE of Bodfish, CA · 20720 days ago · 6 km deep · 68 km away
- 2.210km SSE of Bodfish, CA · 20720 days ago · 6 km deep · 70 km away
- 2.310km SSE of Bodfish, CA · 20720 days ago · 5 km deep · 68 km away
- 2.827km SSW of Bodfish, CA · 20718 days ago · 6 km deep · 49 km away
- 2.820km NW of Tehachapi, CA · 20716 days ago · 6 km deep · 40 km away
- 2.722km S of Bodfish, CA · 20691 days ago · 6 km deep · 55 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3325866. Read Sun, Oct 4, 2026, 6:59 AM UTC.