M1.5 earthquake 18km NE of Trona, CA

Magnitude

1.5 (mc), micro

Local time

Thu, Apr 9, 1987, 7:38 PM PDT

UTC

1987-04-10 02:38:04 UTC

Depth

5.2 km (3.3 mi), shallow

Epicenter

35.875° N, 117.239° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

Operator assigned

Station coverage gap

265°, poorly surrounded by stations

Stations used

0

• Searles Valley, CaliforniaPopulation 1,739. Forecast19 kmNE
• Ridgecrest, CaliforniaPopulation 28,780. Forecast48 kmNE
• Victorville, CaliforniaPopulation 122,225. Forecast149 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast222 kmNNE

After

1. 2.546km NNW of Fort Irwin, CAFri, Apr 10, 7:35 AM PDT · 14410 days ago · 5 km deep · 42 km away
2. 3.216km NNE of Ridgecrest, CAFri, Apr 10, 11:40 AM PDT · 14410 days ago · 4 km deep · 34 km away
3. 2.316km W of Searles Valley, CASun, Apr 12, 9:45 AM PDT · 14408 days ago · 8 km deep · 33 km away
4. 2.214km S of Little Lake, CASun, Apr 12, 11:31 AM PDT · 14408 days ago · 6 km deep · 62 km away
5. 2.314km S of Little Lake, CAMon, Apr 13, 6:40 PM PDT · 14407 days ago · 6 km deep · 62 km away
6. 1.814km SSW of Little Lake, CATue, Apr 14, 2:14 PM PDT · 14406 days ago · 4 km deep · 64 km away
7. 1.67km NE of Coso Junction, CATue, Apr 14, 8:07 PM PDT · 14406 days ago · 3 km deep · 64 km away
8. 1.714km S of Little Lake, CATue, Apr 14, 8:20 PM PDT · 14406 days ago · 6 km deep · 62 km away
9. 2.028km SE of Trona, CAWed, Apr 15, 1:29 AM PDT · 14406 days ago · 5 km deep · 33 km away
10. 1.826km NE of Olancha, CAWed, Apr 15, 3:02 AM PDT · 14406 days ago · 4 km deep · 83 km away
11. 1.914km SSW of Olancha, CAThu, Apr 16, 7:44 PM PDT · 14404 days ago · 1 km deep · 80 km away
12. 2.49km NW of Johannesburg, CAFri, Apr 17, 3:56 AM PDT · 14403 days ago · 7 km deep · 67 km away
13. 1.820km NNE of Kernville, CASun, Apr 19, 11:59 AM PDT · 14401 days ago · 10 km deep · 99 km away
14. 1.713km NE of Coso Junction, CAThu, Apr 23, 4:23 AM PDT · 14397 days ago · 4 km deep · 60 km away
15. 1.719km NNE of California City, CAThu, Apr 23, 5:37 PM PDT · 14397 days ago · 6 km deep · 90 km away
16. 2.018km WNW of Inyokern, CASat, Apr 25, 12:14 AM PDT · 14396 days ago · 10 km deep · 68 km away
17. 2.428km SE of Trona, CASat, Apr 25, 12:53 AM PDT · 14396 days ago · 5 km deep · 32 km away
18. 1.820km ESE of Lone Pine, CASat, Apr 25, 7:00 AM PDT · 14395 days ago · 5 km deep · 90 km away
19. 1.729km W of Inyokern, CATue, Apr 28, 2:46 AM PDT · 14393 days ago · 12 km deep · 84 km away
20. 2.022km WNW of Inyokern, CAWed, Apr 29, 4:34 AM PDT · 14391 days ago · 7 km deep · 72 km away
21. 2.16km SSE of Johannesburg, CAThu, Apr 30, 6:52 AM PDT · 14390 days ago · 9 km deep · 69 km away
22. 1.820km NNE of Kernville, CASun, May 3, 12:10 AM PDT · 14388 days ago · -1 km deep · 99 km away
23. 2.420km E of Little Lake, CAMon, May 4, 8:21 PM PDT · 14386 days ago · 2 km deep · 40 km away
24. 2.120km NNE of California City, CATue, May 5, 2:54 PM PDT · 14385 days ago · 5 km deep · 89 km away
25. 2.117km SSW of Searles Valley, CAThu, May 7, 10:37 PM PDT · 14383 days ago · 6 km deep · 35 km away
26. 2.317km SSW of Searles Valley, CAFri, May 8, 4:41 AM PDT · 14382 days ago · 6 km deep · 35 km away
27. 1.920km ESE of Johannesburg, CASat, May 16, 2:13 AM PDT · 14375 days ago · 5 km deep · 70 km away
28. 3.724km NE of Olancha, CAMon, May 18, 8:53 PM PDT · 14372 days ago · 4 km deep · 81 km away
29. 1.820km NNE of California City, CAThu, May 21, 5:14 AM PDT · 14369 days ago · 8 km deep · 90 km away
30. 1.620km NNE of California City, CAThu, May 21, 3:54 PM PDT · 14369 days ago · 7 km deep · 89 km away
31. 2.220km NNE of California City, CASun, May 24, 6:49 AM PDT · 14366 days ago · 7 km deep · 90 km away
32. 1.67km SE of Coso Junction, CATue, May 26, 8:16 PM PDT · 14364 days ago · 4 km deep · 60 km away
33. 2.47km NNE of Little Lake, CATue, May 26, 8:31 PM PDT · 14364 days ago · 4 km deep · 60 km away
34. 1.923km ESE of Johannesburg, CAFri, May 29, 12:22 PM PDT · 14361 days ago · 5 km deep · 68 km away
35. 2.320km NNE of California City, CAWed, Jun 3, 12:29 PM PDT · 14356 days ago · 7 km deep · 90 km away
36. 2.620km E of Little Lake, CAThu, Jun 4, 4:20 AM PDT · 14355 days ago · 1 km deep · 42 km away
37. 1.920km NNE of California City, CAThu, Jun 4, 5:56 AM PDT · 14355 days ago · 6 km deep · 89 km away
38. 1.911km ENE of Coso Junction, CAMon, Jun 8, 12:07 PM PDT · 14351 days ago · 0 km deep · 58 km away

Before

1. 2.016km NE of Trona, CAThu, Apr 9, 12:27 AM PDT · 14412 days ago · 5 km deep · 2 km away
2. 2.112km SSE of Olancha, CAMon, Apr 6, 11:27 PM PDT · 14414 days ago · 4 km deep · 74 km away
3. 2.218km NNE of Boron, CAMon, Apr 6, 1:19 PM PDT · 14414 days ago · 6 km deep · 87 km away
4. 1.840km SW of Stovepipe Wells, CASun, Apr 5, 8:12 AM PDT · 14415 days ago · 5 km deep · 55 km away
5. 2.220km NNE of California City, CASat, Apr 4, 2:48 PM PST · 14416 days ago · 8 km deep · 90 km away
6. 2.120km NNE of California City, CASat, Apr 4, 4:31 AM PST · 14416 days ago · 7 km deep · 90 km away
7. 1.910km NNW of Ridgecrest, CAFri, Apr 3, 11:04 PM PST · 14417 days ago · 6 km deep · 46 km away
8. 2.411km NE of Little Lake, CAThu, Apr 2, 3:41 AM PST · 14418 days ago · 5 km deep · 52 km away
9. 1.511km ENE of Little Lake, CAThu, Apr 2, 3:32 AM PST · 14418 days ago · 4 km deep · 52 km away
10. 1.713km SE of Olancha, CAWed, Apr 1, 9:41 PM PST · 14419 days ago · 1 km deep · 69 km away
11. 1.827km SE of Trona, CAWed, Apr 1, 2:53 PM PST · 14419 days ago · 5 km deep · 33 km away
12. 2.120km NNE of Kernville, CATue, Mar 31, 1:44 PM PST · 14420 days ago · 5 km deep · 100 km away
13. 2.519km NNE of Kernville, CATue, Mar 31, 1:30 PM PST · 14420 days ago · 4 km deep · 100 km away
14. 3.320km NNE of Kernville, CATue, Mar 31, 1:04 PM PST · 14420 days ago · -1 km deep · 100 km away
15. 2.624km E of Lone Pine, CATue, Mar 31, 2:22 AM PST · 14420 days ago · 4 km deep · 95 km away
16. 2.47km NNE of Olancha, CASat, Mar 28, 5:20 AM PST · 14423 days ago · 4 km deep · 85 km away
17. 2.328km NNE of Kernville, CAFri, Mar 27, 1:00 PM PST · 14424 days ago · 11 km deep · 100 km away
18. 1.820km NNE of California City, CAFri, Mar 27, 4:16 AM PST · 14424 days ago · 7 km deep · 89 km away
19. 2.128km W of Inyokern, CAThu, Mar 26, 5:32 AM PST · 14425 days ago · 13 km deep · 83 km away
20. 1.528km NNE of Kernville, CAWed, Mar 25, 11:25 PM PST · 14426 days ago · 5 km deep · 100 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci720396. Read Tue, Sep 22, 2026, 9:39 PM UTC.