California earthquakes

M2.7 earthquake 42km NE of Trona, CA

A magnitude 2.7 earthquake struck 42km NE of Trona, CA on Wed, May 31, 1978, 4:14 AM PDT (11:14 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.8 35km S of Tecopa, 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
2.7 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
1978-05-31 11:14:40 UTC
Depth
6.0 km (3.7 mi), shallow
Epicenter
36.012° N, 117.022° 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 2.3 km horizontally, 31.6 km in depth
Magnitude uncertainty
±0.08
Depth from
Operator assigned
Station coverage gap
229°, poorly surrounded by stations
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.325km N of Searles Valley, CA · 17651 days ago · 6 km deep · 38 km away
  2. 3.412km N of Searles Valley, CA · 17649 days ago · 1 km deep · 36 km away
  3. 2.539km WSW of Stovepipe Wells, CA · 17648 days ago · 6 km deep · 66 km away
  4. 2.929km WSW of Tecopa, CA · 17640 days ago · 6 km deep · 54 km away
  5. 2.020km NNE of Inyokern, CA · 17635 days ago · 6 km deep · 67 km away
  6. 2.523km N of Ridgecrest, CA · 17632 days ago · 13 km deep · 63 km away
  7. 2.128km SE of Johannesburg, CA · 17631 days ago · 6 km deep · 95 km away
  8. 2.512km NNE of Olancha, CA · 17628 days ago · 6 km deep · 94 km away
  9. 1.716km SW of Little Lake, CA · 17626 days ago · 6 km deep · 93 km away
  10. 2.29km E of Coso Junction, CA · 17624 days ago · 0 km deep · 74 km away
  11. 2.110km SSW of Inyokern, CA · 17624 days ago · 3 km deep · 91 km away
  12. 2.26km WNW of Little Lake, CA · 17624 days ago · 0 km deep · 86 km away
  13. 2.38km NE of Little Lake, CA · 17623 days ago · 0 km deep · 74 km away
  14. 2.320km SW of Little Lake, CA · 17621 days ago · 6 km deep · 95 km away
  15. 2.448km ESE of Trona, CA · 17621 days ago · 6 km deep · 40 km away
  16. 3.020km WSW of Little Lake, CA · 17618 days ago · 6 km deep · 99 km away
  17. 2.326km NNE of Trona, CA · 17615 days ago · 4 km deep · 20 km away
  18. 1.913km ESE of Johannesburg, CA · 17614 days ago · 6 km deep · 86 km away
  19. 2.812km W of Coso Junction, CA · 17614 days ago · 6 km deep · 95 km away
  20. 2.313km SSW of Olancha, CA · 17613 days ago · 6 km deep · 96 km away
  21. 3.835km S of Tecopa, CA · 17611 days ago · 13 km deep · 86 km away
  22. 2.218km ENE of Coso Junction, CA · 17607 days ago · 3 km deep · 67 km away
  23. 2.322km ENE of Coso Junction, CA · 17607 days ago · 3 km deep · 66 km away
  24. 3.014km NE of Little Lake, CA · 17607 days ago · 0 km deep · 69 km away
  25. 2.428km WSW of Tecopa, CA · 17605 days ago · 6 km deep · 52 km away
  26. 1.77km SSW of Coso Junction, CA · 17601 days ago · 6 km deep · 86 km away
  27. 2.08km ESE of Coso Junction, CA · 17599 days ago · 0 km deep · 77 km away

Before

  1. 2.27km SW of Coso Junction, CA · 17670 days ago · 6 km deep · 88 km away
  2. 2.56km NNW of Little Lake, CA · 17674 days ago · 6 km deep · 81 km away
  3. 2.123km SSE of Trona, CA · 17677 days ago · 6 km deep · 52 km away
  4. 2.513km E of Little Lake, CA · 17683 days ago · 6 km deep · 67 km away
  5. 2.414km W of Fort Irwin, CA · 17688 days ago · 0 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci3339742. Read Sun, Oct 4, 2026, 7:34 AM UTC.