M1.7 earthquake 10km WNW of Coronado, CA

Magnitude

1.7 (mc), micro

Local time

Sat, Aug 1, 1981, 10:39 AM PDT

UTC

1981-08-01 17:39:40 UTC

Depth

5.3 km (3.3 mi), shallow

Epicenter

32.729° N, 117.275° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.8 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

172°

Stations used

17

• Coronado, CaliforniaPopulation 24,812. Forecast10 kmWNW
• San Diego, CaliforniaPopulation 1,404,452. Forecast10 kmW

After

1. 1.637km SE of San Clemente Is. (SE tip), CASat, Aug 1, 5:37 PM PDT · 16494 days ago · 6 km deep · 71 km away
2. 2.641km SE of San Clemente Is. (SE tip), CASun, Aug 2, 11:32 AM PDT · 16494 days ago · 6 km deep · 69 km away
3. 1.62km NW of Palomar Observatory, CASun, Aug 2, 8:36 PM PDT · 16493 days ago · 3 km deep · 80 km away
4. 2.011km NNE of Julian, CATue, Aug 4, 3:41 PM PDT · 16492 days ago · 11 km deep · 83 km away
5. 2.067km SE of San Clemente Is. (SE tip), CATue, Aug 4, 10:41 PM PDT · 16491 days ago · 6 km deep · 67 km away
6. 2.338km SE of San Clemente Is. (SE tip), CAWed, Aug 5, 6:51 AM PDT · 16491 days ago · 6 km deep · 72 km away
7. 2.89km ENE of Aguanga, CAWed, Aug 5, 7:18 PM PDT · 16490 days ago · 3 km deep · 96 km away
8. 2.138km ESE of San Clemente Is. (SE tip), CAWed, Aug 5, 9:23 PM PDT · 16490 days ago · 6 km deep · 68 km away
9. 1.510km NNE of Julian, CAThu, Aug 6, 12:20 AM PDT · 16490 days ago · 15 km deep · 83 km away
10. 1.813km NNE of Pine Valley, CAThu, Aug 6, 2:46 PM PDT · 16490 days ago · 1 km deep · 79 km away
11. 1.511km SW of Anza, CASun, Aug 9, 2:28 AM PDT · 16487 days ago · 5 km deep · 98 km away
12. 2.037km SE of San Clemente Is. (SE tip), CASun, Aug 9, 11:34 PM PDT · 16486 days ago · 6 km deep · 73 km away
13. 2.046km ENE of San Clemente Is. (SE tip), CATue, Aug 11, 3:26 AM PDT · 16485 days ago · 6 km deep · 70 km away
14. 1.811km ENE of Julian, CATue, Aug 11, 3:28 AM PDT · 16485 days ago · 12 km deep · 85 km away
15. 2.316km ESE of Campo, CAWed, Aug 12, 8:59 AM PDT · 16484 days ago · 2 km deep · 93 km away
16. 2.86km ENE of Aguanga, CAWed, Aug 12, 10:09 PM PDT · 16483 days ago · 5 km deep · 93 km away
17. 2.039km SE of San Clemente Is. (SE tip), CAThu, Aug 13, 2:11 AM PDT · 16483 days ago · 6 km deep · 73 km away
18. 1.68km NE of Aguanga, CAFri, Aug 14, 5:17 PM PDT · 16481 days ago · 4 km deep · 95 km away
19. 2.038km SE of San Clemente Is. (SE tip), CASat, Aug 15, 12:31 AM PDT · 16481 days ago · 6 km deep · 70 km away
20. 2.410km NE of Aguanga, CASat, Aug 15, 4:12 PM PDT · 16480 days ago · 4 km deep · 97 km away
21. 1.611km WSW of Anza, CASun, Aug 16, 3:59 AM PDT · 16480 days ago · 7 km deep · 99 km away
22. 2.547km WSW of Primo Tapia, B.C., MXSun, Aug 16, 8:32 AM PDT · 16480 days ago · 6 km deep · 83 km away
23. 1.84km S of Lake Henshaw, CASun, Aug 16, 6:05 PM PDT · 16479 days ago · 17 km deep · 71 km away
24. 1.617km ESE of Campo, CAMon, Aug 17, 10:42 PM PDT · 16478 days ago · 7 km deep · 93 km away
25. 2.050km W of La Jolla, CATue, Aug 18, 6:10 AM PDT · 16478 days ago · 6 km deep · 53 km away
26. 2.82km SE of Murrieta, CAWed, Aug 19, 5:02 AM PDT · 16477 days ago · 5 km deep · 91 km away
27. 2.148km SSW of San Clemente, CAWed, Aug 19, 5:54 PM PDT · 16476 days ago · 6 km deep · 65 km away
28. 2.410km ENE of Aguanga, CAWed, Aug 19, 8:18 PM PDT · 16476 days ago · 4 km deep · 97 km away
29. 2.010km WSW of Anza, CAThu, Aug 20, 3:40 PM PDT · 16476 days ago · 3 km deep · 98 km away
30. 1.511km SW of Anza, CASat, Aug 22, 6:24 AM PDT · 16474 days ago · 3 km deep · 98 km away
31. 1.611km WSW of Anza, CASun, Aug 23, 11:30 AM PDT · 16473 days ago · 4 km deep · 99 km away
32. 1.54km SSE of San Juan Capistrano, CATue, Aug 25, 12:25 AM PDT · 16471 days ago · 12 km deep · 90 km away
33. 1.65km SSE of Murrieta, CATue, Aug 25, 7:15 PM PDT · 16470 days ago · 4 km deep · 88 km away
34. 2.01km SE of Murrieta, CAThu, Aug 27, 11:30 AM PDT · 16469 days ago · 11 km deep · 91 km away
35. 1.68km ENE of Aguanga, CAThu, Aug 27, 2:46 PM PDT · 16469 days ago · 5 km deep · 95 km away
36. 1.510km NE of Aguanga, CAFri, Aug 28, 8:02 AM PDT · 16468 days ago · 3 km deep · 97 km away
37. 1.81km SSW of Murrieta, CASat, Aug 29, 7:14 AM PDT · 16467 days ago · 11 km deep · 91 km away
38. 3.08km NNW of Lake Henshaw, CASat, Aug 29, 2:57 PM PDT · 16467 days ago · 8 km deep · 80 km away
39. 2.217km ESE of Campo, CASun, Aug 30, 6:17 AM PDT · 16466 days ago · 8 km deep · 93 km away
40. 2.016km SW of La Jolla, CATue, Sep 1, 12:44 AM PDT · 16464 days ago · 6 km deep · 12 km away
41. 1.811km NE of Aguanga, CATue, Sep 1, 7:05 AM PDT · 16464 days ago · 4 km deep · 98 km away
42. 1.719km ESE of Campo, CATue, Sep 1, 5:40 PM PDT · 16463 days ago · 6 km deep · 95 km away
43. 1.614km SSW of Borrego Springs, CAWed, Sep 2, 3:18 AM PDT · 16463 days ago · 8 km deep · 90 km away
44. 1.59km NNW of Warner Springs, CAWed, Sep 2, 7:07 AM PDT · 16463 days ago · 9 km deep · 90 km away
45. 3.04km ESE of Palomar Observatory, CAWed, Sep 2, 4:50 PM PDT · 16462 days ago · 6 km deep · 80 km away
46. 1.54km E of Palomar Observatory, CAWed, Sep 2, 5:30 PM PDT · 16462 days ago · 6 km deep · 82 km away
47. 4.08km NE of Julian, CAThu, Sep 3, 5:28 PM PDT · 16461 days ago · 18 km deep · 82 km away
48. 2.410km NNE of Julian, CAThu, Sep 3, 5:30 PM PDT · 16461 days ago · 13 km deep · 83 km away
49. 1.89km NNE of Julian, CAThu, Sep 3, 5:31 PM PDT · 16461 days ago · 16 km deep · 82 km away
50. 1.710km NNE of Julian, CAThu, Sep 3, 5:33 PM PDT · 16461 days ago · 15 km deep · 82 km away
51. 1.59km NNE of Julian, CAThu, Sep 3, 5:34 PM PDT · 16461 days ago · 3 km deep · 82 km away
52. 2.58km NNE of Julian, CAThu, Sep 3, 5:34 PM PDT · 16461 days ago · 12 km deep · 81 km away
53. 1.58km NNE of Julian, CAThu, Sep 3, 5:34 PM PDT · 16461 days ago · 14 km deep · 80 km away
54. 1.59km NNE of Julian, CAThu, Sep 3, 5:35 PM PDT · 16461 days ago · 19 km deep · 81 km away
55. 1.78km NNE of Julian, CAThu, Sep 3, 5:36 PM PDT · 16461 days ago · 16 km deep · 81 km away
56. 1.87km NNE of Julian, CAThu, Sep 3, 5:38 PM PDT · 16461 days ago · 12 km deep · 80 km away
57. 3.78km NE of Julian, CAThu, Sep 3, 5:39 PM PDT · 16461 days ago · 18 km deep · 81 km away
58. 2.28km NNE of Julian, CAThu, Sep 3, 5:43 PM PDT · 16461 days ago · 15 km deep · 81 km away
59. 1.68km NNE of Julian, CAThu, Sep 3, 6:07 PM PDT · 16461 days ago · 14 km deep · 81 km away
60. 2.28km NNE of Julian, CAThu, Sep 3, 6:16 PM PDT · 16461 days ago · 17 km deep · 81 km away

The first 60 of 100.

Before

1. 1.510km WSW of Anza, CAThu, Jul 30, 11:03 AM PDT · 16497 days ago · 9 km deep · 99 km away
2. 1.810km NE of Aguanga, CAThu, Jul 30, 9:58 AM PDT · 16497 days ago · 2 km deep · 98 km away
3. 1.711km WSW of Anza, CAThu, Jul 30, 5:09 AM PDT · 16497 days ago · 1 km deep · 98 km away
4. 1.610km NE of Aguanga, CAThu, Jul 30, 2:49 AM PDT · 16497 days ago · 3 km deep · 98 km away
5. 1.911km NE of Julian, CAWed, Jul 29, 4:11 PM PDT · 16497 days ago · 9 km deep · 85 km away
6. 3.411km ENE of Julian, CAWed, Jul 29, 2:28 PM PDT · 16498 days ago · 10 km deep · 85 km away
7. 1.55km E of Palomar Observatory, CATue, Jul 28, 2:17 AM PDT · 16499 days ago · 3 km deep · 81 km away
8. 2.07km NE of Aguanga, CAFri, Jul 24, 11:28 PM PDT · 16502 days ago · 0 km deep · 94 km away
9. 2.68km ENE of Aguanga, CAFri, Jul 24, 11:24 PM PDT · 16502 days ago · 4 km deep · 94 km away
10. 1.610km NE of Aguanga, CAThu, Jul 23, 7:17 PM PDT · 16503 days ago · 1 km deep · 97 km away
11. 2.410km NE of Aguanga, CAThu, Jul 23, 1:31 PM PDT · 16504 days ago · 0 km deep · 97 km away
12. 1.511km NE of Aguanga, CAWed, Jul 22, 6:04 PM PDT · 16504 days ago · 2 km deep · 98 km away
13. 1.511km NW of Julian, CAWed, Jul 22, 10:44 AM PDT · 16505 days ago · 17 km deep · 72 km away
14. 2.010km NE of Aguanga, CAWed, Jul 22, 9:03 AM PDT · 16505 days ago · 4 km deep · 97 km away
15. 2.218km ESE of Julian, CAWed, Jul 22, 7:04 AM PDT · 16505 days ago · 7 km deep · 88 km away
16. 1.511km NE of Aguanga, CATue, Jul 21, 6:42 PM PDT · 16505 days ago · 3 km deep · 98 km away
17. 1.69km NE of Aguanga, CASat, Jul 18, 8:54 AM PDT · 16509 days ago · 3 km deep · 96 km away
18. 2.547km SW of Rosarito, B.C., MXThu, Jul 16, 3:38 PM PDT · 16511 days ago · 6 km deep · 80 km away
19. 2.243km ESE of San Clemente Is. (SE tip), CASat, Jul 11, 4:53 PM PDT · 16515 days ago · 6 km deep · 60 km away
20. 2.135km SE of San Clemente Is. (SE tip), CASat, Jul 11, 2:59 PM PDT · 16516 days ago · 25 km deep · 82 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci520402. Read Tue, Sep 29, 2026, 10:31 AM UTC.