M1.8 earthquake 9km NE of Coso Junction, CA

Magnitude

1.8 (mh), micro

Local time

Sat, May 23, 1981, 12:54 PM PDT

UTC

1981-05-23 19:54:40 UTC

Depth

5.0 km (3.1 mi), shallow

Epicenter

36.102° N, 117.875° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.1 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

272°, poorly surrounded by stations

Stations used

6

• Inyokern, CaliforniaPopulation 1,099. Forecast51 kmN
• Ridgecrest, CaliforniaPopulation 28,780. Forecast56 kmNNW
• Visalia, CaliforniaPopulation 130,104. Forecast130 kmE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast230 kmN

After

1. 2.78km NE of Coso Junction, CASun, May 24, 9:59 PM PDT · 16556 days ago · -1 km deep · 2 km away
2. 2.310km NE of Coso Junction, CASun, May 24, 10:38 PM PDT · 16556 days ago · 5 km deep · 2 km away
3. 2.68km NE of Coso Junction, CAMon, May 25, 12:39 PM PDT · 16556 days ago · 5 km deep · 1 km away
4. 1.820km WNW of Johannesburg, CATue, May 26, 1:39 AM PDT · 16555 days ago · 5 km deep · 76 km away
5. 1.824km SSE of Trona, CAFri, May 29, 7:03 AM PDT · 16552 days ago · 5 km deep · 79 km away
6. 1.516km NNE of Inyokern, CAFri, Jun 5, 4:47 AM PDT · 16545 days ago · 4 km deep · 40 km away
7. 2.115km NNE of Inyokern, CAFri, Jun 5, 5:21 AM PDT · 16545 days ago · -1 km deep · 39 km away
8. 1.816km NNE of Ridgecrest, CAFri, Jun 5, 9:02 AM PDT · 16545 days ago · 5 km deep · 44 km away
9. 3.115km NE of Inyokern, CAFri, Jun 5, 10:54 PM PDT · 16544 days ago · 1 km deep · 41 km away
10. 1.714km NNE of Inyokern, CAFri, Jun 5, 10:55 PM PDT · 16544 days ago · -1 km deep · 41 km away
11. 2.414km NNE of Inyokern, CAFri, Jun 5, 11:17 PM PDT · 16544 days ago · 0 km deep · 41 km away
12. 1.512km ENE of Little Lake, CASat, Jun 6, 2:22 AM PDT · 16544 days ago · 2 km deep · 15 km away
13. 2.011km ESE of Lake Isabella, CASat, Jun 6, 8:43 AM PDT · 16544 days ago · 3 km deep · 72 km away
14. 1.512km ENE of Little Lake, CAMon, Jun 8, 4:51 AM PDT · 16542 days ago · 1 km deep · 15 km away
15. 1.714km NE of Inyokern, CAMon, Jun 8, 11:58 AM PDT · 16542 days ago · -1 km deep · 41 km away
16. 1.614km ENE of Little Lake, CATue, Jun 9, 2:06 PM PDT · 16541 days ago · 5 km deep · 16 km away
17. 1.512km ENE of Little Lake, CAThu, Jun 11, 2:09 PM PDT · 16539 days ago · 0 km deep · 16 km away
18. 1.620km SE of Little Lake, CAThu, Jun 11, 4:15 PM PDT · 16538 days ago · 3 km deep · 33 km away
19. 1.815km NNE of Inyokern, CAThu, Jun 11, 6:42 PM PDT · 16538 days ago · -1 km deep · 40 km away
20. 2.212km SE of Lake Isabella, CAMon, Jun 15, 1:08 AM PDT · 16535 days ago · 9 km deep · 75 km away
21. 1.921km W of Johannesburg, CAMon, Jun 15, 10:08 PM PDT · 16534 days ago · 5 km deep · 79 km away
22. 2.315km NNE of Inyokern, CASun, Jun 21, 10:56 AM PDT · 16529 days ago · 5 km deep · 40 km away
23. 1.527km W of Inyokern, CATue, Jun 23, 4:47 PM PDT · 16526 days ago · 2 km deep · 53 km away
24. 2.924km ENE of Coso Junction, CASun, Jun 28, 4:49 PM PDT · 16521 days ago · 3 km deep · 17 km away
25. 2.025km N of Tehachapi, CAMon, Jun 29, 7:52 AM PDT · 16521 days ago · 0 km deep · 100 km away
26. 2.130km N of Searles Valley, CAFri, Jul 3, 7:57 AM PDT · 16517 days ago · 5 km deep · 41 km away
27. 2.012km ENE of Little Lake, CAFri, Jul 3, 9:35 PM PDT · 16516 days ago · 2 km deep · 15 km away
28. 2.433km E of Johannesburg, CASat, Jul 4, 11:22 PM PDT · 16515 days ago · 5 km deep · 96 km away
29. 3.117km NNE of Inyokern, CASun, Jul 5, 3:30 AM PDT · 16515 days ago · 2 km deep · 40 km away
30. 2.816km NNE of Inyokern, CASun, Jul 5, 5:31 AM PDT · 16515 days ago · -1 km deep · 40 km away
31. 2.915km NNE of Inyokern, CASun, Jul 5, 6:33 AM PDT · 16515 days ago · -1 km deep · 40 km away
32. 2.614km NE of Inyokern, CASun, Jul 5, 6:34 AM PDT · 16515 days ago · -1 km deep · 41 km away
33. 2.114km NE of Inyokern, CASun, Jul 5, 7:17 AM PDT · 16515 days ago · 5 km deep · 41 km away
34. 3.116km NNE of Inyokern, CASun, Jul 5, 10:45 AM PDT · 16515 days ago · -1 km deep · 40 km away
35. 2.212km NNE of Inyokern, CASun, Jul 5, 5:23 PM PDT · 16514 days ago · -1 km deep · 42 km away
36. 2.014km NNE of Inyokern, CASun, Jul 5, 7:47 PM PDT · 16514 days ago · 0 km deep · 40 km away
37. 1.816km N of Ridgecrest, CAMon, Jul 6, 1:15 PM PDT · 16514 days ago · 6 km deep · 40 km away
38. 1.832km ENE of Coso Junction, CASat, Jul 11, 7:14 AM PDT · 16509 days ago · -1 km deep · 24 km away
39. 1.519km SE of Little Lake, CASun, Jul 12, 10:38 PM PDT · 16507 days ago · 4 km deep · 34 km away
40. 2.015km NNE of Inyokern, CAMon, Jul 13, 6:40 AM PDT · 16507 days ago · 2 km deep · 40 km away
41. 1.915km NE of Inyokern, CAMon, Jul 13, 2:06 PM PDT · 16507 days ago · 4 km deep · 41 km away
42. 1.817km W of Johannesburg, CATue, Jul 14, 3:10 AM PDT · 16506 days ago · 5 km deep · 83 km away
43. 3.021km WNW of Inyokern, CASat, Jul 18, 2:22 PM PDT · 16501 days ago · -1 km deep · 42 km away
44. 2.418km WNW of Johannesburg, CASat, Jul 18, 9:44 PM PDT · 16501 days ago · 3 km deep · 77 km away
45. 1.719km SE of Little Lake, CASun, Jul 19, 3:03 AM PDT · 16501 days ago · 3 km deep · 34 km away
46. 2.118km WNW of Johannesburg, CASun, Jul 19, 4:45 AM PDT · 16501 days ago · 2 km deep · 77 km away
47. 1.717km W of Johannesburg, CASun, Jul 19, 5:07 AM PDT · 16501 days ago · 4 km deep · 78 km away
48. 1.918km WNW of Johannesburg, CASun, Jul 19, 11:09 AM PDT · 16501 days ago · 3 km deep · 78 km away
49. 2.416km NNE of Inyokern, CASun, Jul 19, 12:06 PM PDT · 16501 days ago · 2 km deep · 40 km away
50. 2.515km SE of Lone Pine, CATue, Jul 21, 10:09 AM PDT · 16499 days ago · 1 km deep · 44 km away
51. 2.020km NNE of Inyokern, CAWed, Jul 22, 11:45 AM PDT · 16498 days ago · 4 km deep · 37 km away

Before

1. 3.18km NE of Coso Junction, CASat, May 23, 11:50 AM PDT · 16558 days ago · -1 km deep · 1 km away
2. 2.133km NNW of Searles Valley, CATue, May 19, 2:54 AM PDT · 16562 days ago · -1 km deep · 31 km away
3. 2.415km NNE of Inyokern, CAWed, May 13, 12:56 PM PDT · 16568 days ago · -1 km deep · 40 km away
4. 2.115km NNE of Inyokern, CAWed, May 13, 9:19 AM PDT · 16568 days ago · -1 km deep · 40 km away
5. 2.422km NNE of Trona, CAMon, May 11, 5:40 PM PDT · 16569 days ago · 5 km deep · 54 km away
6. 2.416km ENE of Little Lake, CASat, May 9, 9:27 AM PDT · 16572 days ago · 2 km deep · 16 km away
7. 2.416km ENE of Little Lake, CASat, May 9, 6:51 AM PDT · 16572 days ago · 2 km deep · 17 km away
8. 2.015km ENE of Little Lake, CASat, May 9, 3:33 AM PDT · 16572 days ago · 0 km deep · 16 km away
9. 2.012km ESE of Johannesburg, CAFri, May 8, 2:40 AM PDT · 16573 days ago · 4 km deep · 91 km away
10. 3.114km NNW of Olancha, CATue, May 5, 7:34 AM PDT · 16576 days ago · 5 km deep · 37 km away
11. 3.013km NNW of Olancha, CATue, May 5, 6:59 AM PDT · 16576 days ago · 5 km deep · 36 km away
12. 1.618km SE of Little Lake, CAMon, May 4, 5:14 AM PDT · 16577 days ago · -1 km deep · 33 km away
13. 2.218km SE of Little Lake, CASun, May 3, 9:32 PM PDT · 16577 days ago · 0 km deep · 33 km away
14. 2.319km SE of Little Lake, CASun, May 3, 9:14 PM PDT · 16577 days ago · 0 km deep · 34 km away
15. 2.015km SSE of Bodfish, CASat, May 2, 2:55 AM PDT · 16579 days ago · 5 km deep · 87 km away
16. 2.523km ESE of Little Lake, CAFri, May 1, 7:15 PM PDT · 16579 days ago · -1 km deep · 34 km away
17. 3.217km SE of Little Lake, CAFri, May 1, 7:11 PM PDT · 16579 days ago · -1 km deep · 32 km away
18. 1.533km W of Coso Junction, CAFri, May 1, 2:41 PM PDT · 16579 days ago · 5 km deep · 39 km away
19. 1.718km SE of Little Lake, CAFri, May 1, 3:30 AM PDT · 16580 days ago · -1 km deep · 33 km away
20. 1.516km SE of Little Lake, CAFri, May 1, 2:24 AM PDT · 16580 days ago · 4 km deep · 31 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci516439. Read Tue, Sep 22, 2026, 8:45 AM UTC.