California earthquakes

M3.4 earthquake 5km WSW of Carpinteria, CA

A magnitude 3.4 earthquake struck 5km WSW of Carpinteria, CA on Sat, Aug 30, 1952, 7:58 AM GMT-7 (14:58 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M4.7 7km SW of Grapevine, CA. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.4 (ml), minor
Local time
UTC
1952-08-30 14:58:11 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
34.379° N, 119.566° W
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 1.2 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
196°, poorly surrounded by stations
Stations used
6

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 4.77km SW of Grapevine, CA · 27048 days ago · 6 km deep · 79 km away
  2. 4.415km WNW of Grapevine, CA · 27038 days ago · 5 km deep · 80 km away
  3. 2.922km NNW of Santa Cruz Is. (E end), CA · 27038 days ago · 3 km deep · 20 km away
  4. 4.013km NNE of Grapevine, CA · 27025 days ago · 8 km deep · 97 km away
  5. 4.33km WNW of Grapevine, CA · 27004 days ago · 6 km deep · 84 km away
  6. 3.814km NNW of Grapevine, CA · 26999 days ago · 0 km deep · 92 km away

Before

  1. 4.713km N of Grapevine, CA · 27056 days ago · 6 km deep · 94 km away
  2. 3.64km NW of Grapevine, CA · 27057 days ago · 6 km deep · 86 km away
  3. 4.39km WSW of Grapevine, CA · 27061 days ago · 6 km deep · 77 km away
  4. 4.415km ESE of Maricopa, CA · 27062 days ago · 6 km deep · 77 km away
  5. 3.911km ENE of Grapevine, CA · 27063 days ago · 5 km deep · 96 km away
  6. 4.717km NW of Grapevine, CA · 27063 days ago · 13 km deep · 86 km away
  7. 4.211km NE of Grapevine, CA · 27064 days ago · 0 km deep · 97 km away
  8. 3.912km NNW of Grapevine, CA · 27064 days ago · 0 km deep · 89 km away
  9. 4.010km NNW of Grapevine, CA · 27064 days ago · 0 km deep · 90 km away
  10. 3.910km N of Grapevine, CA · 27064 days ago · 6 km deep · 92 km away
  11. 4.111km NNE of Grapevine, CA · 27067 days ago · 6 km deep · 96 km away
  12. 3.019km NW of Santa Cruz Is. (E end), CA · 27070 days ago · 6 km deep · 28 km away
  13. 4.211km NW of Grapevine, CA · 27071 days ago · 6 km deep · 86 km away
  14. 5.019km NW of Grapevine, CA · 27074 days ago · 6 km deep · 86 km away
  15. 4.011km NNW of Grapevine, CA · 27077 days ago · 6 km deep · 89 km away
  16. 3.714km NNW of Grapevine, CA · 27077 days ago · 6 km deep · 91 km away
  17. 4.97km SW of Grapevine, CA · 27080 days ago · 6 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3306764. Read Tue, Sep 22, 2026, 12:14 PM UTC.