California earthquakes

M3.1 earthquake 22km W of Avalon, CA

A magnitude 3.1 earthquake struck 22km W of Avalon, CA on Mon, Sep 13, 1937, 1:48 AM GMT-8 (09:48 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.5 6km S of San Clemente Is. (NW tip), CA. This one was a foreshock.

Avalon forecastMore in California

Map

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

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The earthquake

Magnitude
3.1 (ml), minor
Local time
UTC
1937-09-13 09:48:17 UTC
Depth
5.9 km (3.7 mi), shallow
Epicenter
33.358° N, 118.560° 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 19.3 km horizontally, 29.0 km in depth
Magnitude uncertainty
±0.15
Depth from
Operator assigned
Station coverage gap
326°, poorly surrounded by stations
Stations used
3

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 3.56km S of San Clemente Is. (NW tip), CA · 32516 days ago · 6 km deep · 43 km away
  2. 2.921km S of Port Hueneme, CA · 32506 days ago · 6 km deep · 90 km away
  3. 2.323km ESE of Santa Cruz Is. (E end), CA · 32506 days ago · 6 km deep · 94 km away
  4. 2.110km WSW of Laguna Beach, CA · 32503 days ago · 6 km deep · 66 km away
  5. 1.74km NW of Huntington Beach, CA · 32499 days ago · 6 km deep · 63 km away
  6. 1.82km WNW of Huntington Beach, CA · 32498 days ago · 6 km deep · 63 km away
  7. 1.919km WSW of Newport Beach, CA · 32485 days ago · 6 km deep · 46 km away
  8. 2.216km SE of Avalon, CA · 32485 days ago · 6 km deep · 36 km away
  9. 2.119km NE of Avalon, CA · 32479 days ago · 6 km deep · 36 km away
  10. 1.96km S of Chino Hills, CA · 32478 days ago · 6 km deep · 98 km away
  11. 2.218km SSE of San Pedro, CA · 32470 days ago · 6 km deep · 41 km away
  12. 2.63km SE of Buena Park, CA · 32463 days ago · 6 km deep · 77 km away
  13. 2.06km N of Malibu Beach, CA · 32461 days ago · 6 km deep · 82 km away

Before

  1. 2.04km NW of Huntington Beach, CA · 32522 days ago · 6 km deep · 64 km away
  2. 3.12km E of Los Angeles, CA · 32523 days ago · 5 km deep · 83 km away
  3. 2.121km SSE of San Pedro, CA · 32528 days ago · 6 km deep · 37 km away
  4. 1.83km NW of Carson, CA · 32531 days ago · 6 km deep · 60 km away
  5. 2.12km NW of Costa Mesa, CA · 32539 days ago · 6 km deep · 69 km away
  6. 2.52km SSW of Lomita, CA · 32541 days ago · 6 km deep · 51 km away
  7. 3.03km SSE of Chatsworth, CA · 32542 days ago · 14 km deep · 98 km away
  8. 3.28km SSW of Signal Hill, CA · 32543 days ago · 6 km deep · 54 km away
  9. 1.63km NNE of Carson, CA · 32543 days ago · 6 km deep · 62 km away
  10. 3.01km WNW of Signal Hill, CA · 32543 days ago · 6 km deep · 61 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3364396. Read Tue, Sep 22, 2026, 10:06 AM UTC.