M1.7 earthquake 9km ESE of Coso Junction, CA

Magnitude

1.7 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Mon, Aug 17, 1981, 6:59 PM PDT

UTC

1981-08-18 01:59:21 UTC

Depth

3.1 km (1.9 mi), shallow

Epicenter

36.019° N, 117.850° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.9 km horizontally, 1.9 km in depth

Depth from

From location

Station coverage gap

136°

Stations used

9

• Inyokern, CaliforniaPopulation 1,099. Forecast42 kmN
• Ridgecrest, CaliforniaPopulation 28,780. Forecast47 kmNNW
• Bakersfield, CaliforniaPopulation 373,640. Forecast128 kmNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast222 kmN

After

1. 1.715km NNE of Inyokern, CAWed, Aug 19, 7:43 PM PDT · 16482 days ago · 0 km deep · 30 km away
2. 1.67km E of Coso Junction, CAThu, Aug 20, 2:20 PM PDT · 16481 days ago · 7 km deep · 4 km away
3. 1.624km SSW of Little Lake, CAThu, Aug 20, 6:44 PM PDT · 16481 days ago · 9 km deep · 35 km away
4. 2.16km E of Coso Junction, CAThu, Aug 20, 8:24 PM PDT · 16481 days ago · -1 km deep · 4 km away
5. 1.913km ENE of Little Lake, CAFri, Aug 21, 6:26 AM PDT · 16480 days ago · 0 km deep · 9 km away
6. 1.713km E of Little Lake, CAFri, Aug 21, 10:44 AM PDT · 16480 days ago · 5 km deep · 11 km away
7. 2.06km ESE of Coso Junction, CASat, Aug 22, 11:02 AM PDT · 16479 days ago · -1 km deep · 4 km away
8. 1.927km WSW of Coso Junction, CAMon, Aug 24, 4:20 AM PDT · 16477 days ago · 5 km deep · 35 km away
9. 1.77km NW of Olancha, CAMon, Aug 24, 9:36 PM PDT · 16477 days ago · 5 km deep · 39 km away
10. 1.513km NNE of Inyokern, CAMon, Aug 31, 1:57 AM PDT · 16470 days ago · -1 km deep · 32 km away
11. 1.814km NE of Inyokern, CAMon, Aug 31, 4:03 AM PDT · 16470 days ago · -1 km deep · 32 km away
12. 1.715km NE of Inyokern, CASat, Sep 5, 7:09 AM PDT · 16465 days ago · 4 km deep · 31 km away
13. 1.516km NE of Coso Junction, CASat, Sep 5, 8:32 AM PDT · 16465 days ago · 4 km deep · 14 km away
14. 1.514km E of Coso Junction, CASat, Sep 5, 12:00 PM PDT · 16465 days ago · 4 km deep · 7 km away
15. 1.67km WNW of Little Lake, CASun, Sep 6, 6:35 AM PDT · 16464 days ago · 4 km deep · 13 km away
16. 1.850km W of Shoshone, CAMon, Sep 7, 10:45 PM PDT · 16463 days ago · 5 km deep · 93 km away
17. 2.120km WNW of Inyokern, CAWed, Sep 9, 10:42 AM PDT · 16461 days ago · 1 km deep · 35 km away
18. 2.616km SSW of Searles Valley, CAMon, Sep 14, 12:41 PM PDT · 16456 days ago · -1 km deep · 56 km away
19. 2.020km WNW of Searles Valley, CAMon, Sep 14, 6:53 PM PDT · 16456 days ago · 1 km deep · 30 km away
20. 1.65km WNW of Little Lake, CATue, Sep 15, 5:02 AM PDT · 16455 days ago · 4 km deep · 12 km away
21. 1.59km SSW of Olancha, CAFri, Sep 18, 6:23 AM PDT · 16452 days ago · 5 km deep · 28 km away
22. 2.116km SSW of Searles Valley, CAFri, Sep 18, 5:34 PM PDT · 16452 days ago · 2 km deep · 56 km away
23. 2.321km WSW of Olancha, CAFri, Sep 18, 6:56 PM PDT · 16452 days ago · 5 km deep · 37 km away
24. 2.511km SSW of Olancha, CAFri, Sep 18, 11:18 PM PDT · 16452 days ago · 5 km deep · 26 km away
25. 1.514km S of Olancha, CAFri, Sep 18, 11:30 PM PDT · 16452 days ago · 5 km deep · 23 km away
26. 1.79km WNW of Olancha, CASat, Sep 19, 12:17 AM PDT · 16452 days ago · 5 km deep · 40 km away
27. 1.56km WNW of Olancha, CASat, Sep 19, 7:00 AM PDT · 16451 days ago · 5 km deep · 37 km away
28. 2.410km E of Lone Pine, CASun, Sep 20, 6:30 AM PDT · 16450 days ago · 5 km deep · 62 km away
29. 1.918km WNW of Johannesburg, CASat, Sep 26, 11:44 PM PDT · 16444 days ago · -1 km deep · 68 km away
30. 1.712km NNE of Inyokern, CAMon, Sep 28, 2:48 AM PDT · 16442 days ago · 4 km deep · 32 km away
31. 1.627km SSW of Bodfish, CAMon, Sep 28, 9:57 PM PDT · 16442 days ago · 5 km deep · 99 km away
32. 2.223km E of Little Lake, CATue, Sep 29, 4:52 AM PDT · 16441 days ago · 0 km deep · 21 km away
33. 1.619km SSW of Little Lake, CATue, Sep 29, 7:56 AM PDT · 16441 days ago · 3 km deep · 30 km away
34. 1.56km ESE of Bodfish, CATue, Sep 29, 10:30 PM PDT · 16441 days ago · 3 km deep · 73 km away
35. 1.928km ESE of Lake Isabella, CATue, Sep 29, 11:10 PM PDT · 16441 days ago · 5 km deep · 60 km away
36. 1.78km ESE of Coso Junction, CAWed, Sep 30, 3:31 AM PDT · 16440 days ago · 4 km deep · 2 km away
37. 2.45km NNW of Olancha, CASat, Oct 3, 7:59 AM PDT · 16437 days ago · 4 km deep · 37 km away
38. 2.12km WNW of Olancha, CASun, Oct 4, 1:15 AM PDT · 16437 days ago · 5 km deep · 34 km away
39. 1.53km SSW of Olancha, CASun, Oct 4, 11:58 AM PDT · 16436 days ago · 4 km deep · 30 km away
40. 1.818km N of California City, CAWed, Oct 7, 8:08 PM PDT · 16433 days ago · 4 km deep · 83 km away
41. 2.423km W of Johannesburg, CASat, Oct 10, 8:53 AM PDT · 16430 days ago · 1 km deep · 71 km away

Before

1. 1.529km ESE of Porterville, CAMon, Aug 17, 5:34 PM PDT · 16484 days ago · 5 km deep · 79 km away
2. 1.68km SE of Independence, CAFri, Aug 14, 9:02 PM PDT · 16487 days ago · 5 km deep · 86 km away
3. 1.56km E of Coso Junction, CAWed, Aug 12, 9:44 PM PDT · 16489 days ago · 8 km deep · 3 km away
4. 2.316km NNE of Inyokern, CASat, Aug 8, 7:19 PM PDT · 16493 days ago · 2 km deep · 29 km away
5. 1.916km NNE of Inyokern, CASat, Aug 8, 10:29 AM PDT · 16493 days ago · 1 km deep · 28 km away
6. 2.134km WSW of Olancha, CASat, Aug 8, 6:34 AM PDT · 16493 days ago · 5 km deep · 48 km away
7. 1.724km WNW of Inyokern, CAWed, Aug 5, 3:23 PM PDT · 16496 days ago · 8 km deep · 42 km away
8. 1.527km ENE of Little Lake, CAWed, Aug 5, 1:30 AM PDT · 16496 days ago · 1 km deep · 20 km away
9. 2.128km N of Searles Valley, CATue, Aug 4, 7:37 PM PDT · 16497 days ago · -1 km deep · 40 km away
10. 1.72km SW of Kernville, CAMon, Aug 3, 10:55 PM PDT · 16498 days ago · 0 km deep · 62 km away
11. 1.622km N of Searles Valley, CASat, Aug 1, 6:04 PM PDT · 16500 days ago · 0 km deep · 40 km away
12. 2.120km ENE of Coso Junction, CATue, Jul 28, 4:29 AM PDT · 16504 days ago · 2 km deep · 14 km away
13. 1.613km ENE of Coso Junction, CASun, Jul 26, 12:48 AM PDT · 16507 days ago · 5 km deep · 10 km away
14. 1.817km E of Little Lake, CASat, Jul 25, 10:49 PM PDT · 16507 days ago · 14 km deep · 16 km away
15. 1.814km NE of Coso Junction, CASat, Jul 25, 6:28 PM PDT · 16507 days ago · 5 km deep · 11 km away
16. 2.916km ENE of Coso Junction, CASat, Jul 25, 1:05 PM PDT · 16507 days ago · 5 km deep · 12 km away
17. 2.216km ENE of Coso Junction, CASat, Jul 25, 11:04 AM PDT · 16507 days ago · 5 km deep · 12 km away
18. 1.617km NE of Coso Junction, CASat, Jul 25, 10:28 AM PDT · 16507 days ago · 5 km deep · 14 km away
19. 2.017km ENE of Coso Junction, CASat, Jul 25, 10:03 AM PDT · 16507 days ago · 3 km deep · 13 km away
20. 2.216km ENE of Coso Junction, CASat, Jul 25, 9:32 AM PDT · 16507 days ago · 5 km deep · 11 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci521371. Read Sun, Oct 4, 2026, 7:50 PM UTC.