California earthquakes

M2.9 earthquake 21km SW of Ocotillo, CA

A magnitude 2.9 earthquake struck 21km SW of Ocotillo, CA on Tue, Feb 21, 1939, 2:54 PM GMT-8 (22:54 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.7 25km S of Ocotillo, 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
2.9 (ml), micro
Local time
UTC
1939-02-21 22:54:52 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
32.611° N, 116.156° 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 5.1 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
322°, 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: 14 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 3.725km S of Ocotillo, CA · 31990 days ago · 6 km deep · 21 km away
  2. 2.55km N of Ocotillo Wells, CA · 31988 days ago · 6 km deep · 65 km away
  3. 3.35km WSW of Niland, CA · 31986 days ago · 6 km deep · 87 km away
  4. 2.911km NNE of Julian, CA · 31985 days ago · 6 km deep · 71 km away
  5. 3.315km W of Delta, B.C., MX · 31963 days ago · 6 km deep · 81 km away
  6. 4.112km E of Holtville, CA · 31962 days ago · 6 km deep · 87 km away
  7. 2.723km ENE of Campo, CA · 31961 days ago · 6 km deep · 12 km away
  8. 2.822km ESE of Anza, CA · 31960 days ago · 6 km deep · 98 km away
  9. 4.017km NNE of Holtville, CA · 31959 days ago · 6 km deep · 88 km away
  10. 3.75km S of Holtville, CA · 31959 days ago · 6 km deep · 75 km away
  11. 3.66km ENE of Holtville, CA · 31958 days ago · 6 km deep · 82 km away
  12. 3.22km S of Holtville, CA · 31938 days ago · 6 km deep · 75 km away
  13. 3.512km WSW of Progreso, B.C., MX · 31937 days ago · 6 km deep · 43 km away
  14. 3.24km ENE of Heber, CA · 31936 days ago · 6 km deep · 64 km away

Before

  1. 3.028km ESE of Campo, CA · 31992 days ago · 6 km deep · 13 km away
  2. 3.021km W of Westmorland, CA · 31997 days ago · 6 km deep · 55 km away
  3. 2.912km NW of Ocotillo Wells, CA · 32000 days ago · 6 km deep · 68 km away
  4. 2.812km WNW of Westmorland, CA · 32002 days ago · 6 km deep · 63 km away
  5. 3.412km WNW of Westmorland, CA · 32004 days ago · 6 km deep · 63 km away
  6. 3.516km WNW of Westmorland, CA · 32004 days ago · 6 km deep · 64 km away
  7. 3.516km WSW of Imperial, CA · 32011 days ago · 6 km deep · 45 km away
  8. 3.112km ESE of Oasis, CA · 32015 days ago · 6 km deep · 91 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3364898. Read Tue, Sep 22, 2026, 10:30 PM UTC.