M2.8 earthquake 24km NNW of Tehachapi, CA
A magnitude 2.8 earthquake struck 24km NNW of Tehachapi, CA on Mon, Dec 28, 1964, 3:34 AM GMT-8 (11:34 UTC), 6 km (4 mi) below the surface.
A larger quake followed: M3.4 5km WSW of Grapevine, 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), micro
- Local time
- UTC
- 1964-12-28 11:34:36 UTC
- Depth
- 6.0 km (3.7 mi), shallow
- Epicenter
- 35.318° N, 118.588° 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
- ±0.05
- Depth from
- Operator assigned
- Station coverage gap
- 131°
- 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 5 in the 30 days before it.
After
- 3.45km WSW of Grapevine, CA · 22537 days ago · 7 km deep · 56 km away
- 3.114km E of Lake Isabella, CA · 22515 days ago · 0 km deep · 40 km away
- 3.06km WSW of Palmdale, CA · 22508 days ago · 5 km deep · 92 km away
- 2.922km S of Bodfish, CA · 22508 days ago · 1 km deep · 9 km away
Before
- 3.125km ENE of Arvin, CA · 22553 days ago · 6 km deep · 1 km away
- 3.56km NNW of Frazier Park, CA · 22558 days ago · 13 km deep · 60 km away
- 2.96km E of Lake Isabella, CA · 22561 days ago · 5 km deep · 37 km away
- 3.28km ESE of Lake Isabella, CA · 22577 days ago · 5 km deep · 36 km away
- 3.47km E of Lake Isabella, CA · 22577 days ago · 2 km deep · 38 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event ci3330757. Read Sun, Sep 27, 2026, 2:04 PM UTC.