M1.7 earthquake 8km SW of Heber, CA

Magnitude

1.7 (Mc), micro

Magnitude from

Southern California Seismic Network

Local time

Tue, Sep 29, 1981, 7:23 PM PDT

UTC

1981-09-30 02:23:41 UTC

Depth

5.9 km (3.7 mi), shallow

Epicenter

32.684° N, 115.587° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.6 km horizontally, 31.6 km in depth

Depth from

Operator assigned

Station coverage gap

194°, poorly surrounded by stations

Stations used

15

• Santa Isabel, MexicoPopulation 29,311. Forecast6 kmNNW
• Mexicali, MexicoPopulation 1,032,686. Forecast14 kmWNW

After

1. 1.821km E of Julian, CATue, Sep 29, 8:56 PM PDT · 16438 days ago · 9 km deep · 84 km away
2. 1.55km SSW of Salton City, CAWed, Sep 30, 1:17 AM PDT · 16437 days ago · 3 km deep · 74 km away
3. 2.222km ESE of Julian, CAThu, Oct 1, 6:41 AM PDT · 16436 days ago · 10 km deep · 83 km away
4. 2.137km NE of Ensenada, B.C., MXSat, Oct 3, 12:19 AM PDT · 16434 days ago · 6 km deep · 96 km away
5. 1.933km NE of Ensenada, B.C., MXSat, Oct 3, 12:40 AM PDT · 16434 days ago · 6 km deep · 100 km away
6. 2.220km SW of Ocotillo, CASat, Oct 3, 7:49 AM PDT · 16434 days ago · 12 km deep · 53 km away
7. 2.836km NE of Ensenada, B.C., MXSat, Oct 3, 5:49 PM PDT · 16434 days ago · 6 km deep · 97 km away
8. 1.928km WSW of Progreso, B.C., MXSun, Oct 4, 5:35 AM PDT · 16433 days ago · 1 km deep · 35 km away
9. 2.128km SW of Progreso, B.C., MXSun, Oct 4, 5:42 AM PDT · 16433 days ago · 6 km deep · 35 km away
10. 1.68km WSW of Salton City, CASun, Oct 4, 6:58 PM PDT · 16433 days ago · 2 km deep · 76 km away
11. 1.75km S of Salton City, CAMon, Oct 5, 10:16 AM PDT · 16432 days ago · 4 km deep · 72 km away
12. 2.310km N of Westmorland, CAMon, Oct 5, 1:53 PM PDT · 16432 days ago · 13 km deep · 49 km away
13. 3.415km WNW of Delta, B.C., MXTue, Oct 6, 11:22 AM PDT · 16431 days ago · 6 km deep · 38 km away
14. 1.712km WSW of Westmorland, CATue, Oct 6, 2:39 PM PDT · 16431 days ago · 4 km deep · 36 km away
15. 2.530km WSW of Alberto Oviedo Mota, B.C., MXTue, Oct 6, 4:06 PM PDT · 16431 days ago · 6 km deep · 60 km away
16. 2.012km WNW of Delta, B.C., MXTue, Oct 6, 6:41 PM PDT · 16431 days ago · 6 km deep · 41 km away
17. 1.56km NNE of Westmorland, CAWed, Oct 7, 2:19 PM PDT · 16430 days ago · 10 km deep · 45 km away
18. 1.57km SW of Holtville, CAWed, Oct 7, 5:58 PM PDT · 16430 days ago · 17 km deep · 17 km away
19. 1.812km WNW of Delta, B.C., MXThu, Oct 8, 3:56 AM PDT · 16429 days ago · 6 km deep · 41 km away
20. 2.036km NE of Ensenada, B.C., MXSat, Oct 10, 2:03 AM PDT · 16427 days ago · 6 km deep · 97 km away
21. 1.721km WSW of Progreso, B.C., MXSat, Oct 10, 4:17 AM PDT · 16427 days ago · 4 km deep · 26 km away
22. 2.342km NE of Ensenada, B.C., MXSun, Oct 11, 5:07 AM PDT · 16426 days ago · 6 km deep · 91 km away
23. 1.69km S of Holtville, CASun, Oct 11, 6:22 AM PDT · 16426 days ago · 6 km deep · 19 km away
24. 1.79km SSW of Holtville, CASun, Oct 11, 6:23 AM PDT · 16426 days ago · 6 km deep · 18 km away
25. 1.62km E of Niland, CATue, Oct 13, 3:04 AM PDT · 16424 days ago · 2 km deep · 63 km away
26. 1.616km SW of Progreso, B.C., MXTue, Oct 13, 9:00 AM PDT · 16424 days ago · 4 km deep · 25 km away
27. 1.516km WSW of Progreso, B.C., MXTue, Oct 13, 9:08 AM PDT · 16424 days ago · 4 km deep · 21 km away
28. 1.517km SW of Progreso, B.C., MXTue, Oct 13, 9:49 AM PDT · 16424 days ago · 2 km deep · 25 km away
29. 1.716km WSW of Progreso, B.C., MXTue, Oct 13, 1:38 PM PDT · 16424 days ago · 4 km deep · 22 km away
30. 1.716km WSW of Progreso, B.C., MXTue, Oct 13, 2:44 PM PDT · 16424 days ago · 2 km deep · 24 km away
31. 1.66km W of Westmorland, CAWed, Oct 14, 3:55 PM PDT · 16423 days ago · 4 km deep · 39 km away
32. 1.822km SW of Westmorland, CAThu, Oct 15, 3:40 AM PDT · 16422 days ago · 7 km deep · 34 km away
33. 1.76km ENE of Puebla, B.C., MXThu, Oct 15, 9:14 AM PDT · 16422 days ago · 6 km deep · 30 km away
34. 1.812km NE of Ocotillo Wells, CASat, Oct 17, 10:12 AM PDT · 16420 days ago · 5 km deep · 75 km away
35. 2.012km SW of Salton City, CASat, Oct 17, 12:36 PM PDT · 16420 days ago · 5 km deep · 75 km away
36. 3.712km SW of Salton City, CASat, Oct 17, 12:47 PM PDT · 16420 days ago · 15 km deep · 74 km away
37. 1.712km NNE of Ocotillo Wells, CASat, Oct 17, 12:49 PM PDT · 16420 days ago · 3 km deep · 75 km away
38. 2.112km NE of Ocotillo Wells, CASat, Oct 17, 12:50 PM PDT · 16420 days ago · 5 km deep · 72 km away
39. 2.011km NNE of Ocotillo Wells, CASat, Oct 17, 12:51 PM PDT · 16420 days ago · 5 km deep · 76 km away
40. 2.212km NE of Ocotillo Wells, CASat, Oct 17, 12:53 PM PDT · 16420 days ago · 6 km deep · 75 km away
41. 3.112km NNE of Ocotillo Wells, CASat, Oct 17, 12:54 PM PDT · 16420 days ago · 5 km deep · 75 km away
42. 1.712km NE of Ocotillo Wells, CASat, Oct 17, 1:00 PM PDT · 16420 days ago · 5 km deep · 75 km away
43. 1.811km SW of Salton City, CASat, Oct 17, 1:00 PM PDT · 16420 days ago · 5 km deep · 75 km away
44. 1.612km SW of Salton City, CASat, Oct 17, 1:16 PM PDT · 16420 days ago · 6 km deep · 74 km away
45. 2.112km NE of Ocotillo Wells, CASat, Oct 17, 2:49 PM PDT · 16420 days ago · 4 km deep · 74 km away
46. 2.112km NE of Ocotillo Wells, CASat, Oct 17, 5:07 PM PDT · 16420 days ago · 7 km deep · 75 km away
47. 1.94km SW of Guadalupe Victoria, B.C., MXSun, Oct 18, 5:01 PM PDT · 16419 days ago · 6 km deep · 63 km away
48. 1.625km ENE of Pine Valley, CAMon, Oct 19, 12:11 AM PDT · 16418 days ago · 6 km deep · 72 km away
49. 2.08km NW of Ocotillo, CATue, Oct 20, 1:09 PM PDT · 16417 days ago · 9 km deep · 45 km away
50. 1.817km SSW of Ocotillo, CAWed, Oct 21, 12:51 AM PDT · 16416 days ago · 7 km deep · 47 km away
51. 1.66km S of Brawley, CAWed, Oct 21, 8:57 AM PDT · 16416 days ago · 12 km deep · 27 km away
52. 1.721km SW of Westmorland, CAWed, Oct 21, 2:53 PM PDT · 16416 days ago · 9 km deep · 34 km away
53. 2.418km N of Ocotillo, CAWed, Oct 21, 9:04 PM PDT · 16416 days ago · 12 km deep · 42 km away
54. 1.58km SW of Holtville, CAThu, Oct 22, 9:24 AM PDT · 16415 days ago · 6 km deep · 17 km away
55. 2.038km ENE of Ensenada, B.C., MXFri, Oct 23, 10:07 PM PDT · 16414 days ago · 6 km deep · 96 km away
56. 2.08km ESE of Puebla, B.C., MXFri, Oct 23, 10:41 PM PDT · 16414 days ago · 6 km deep · 33 km away
57. 2.314km SSW of Borrego Springs, CASat, Oct 24, 5:19 AM PDT · 16413 days ago · 8 km deep · 95 km away
58. 1.710km SE of Ocotillo, CASun, Oct 25, 6:36 AM PST · 16412 days ago · 4 km deep · 31 km away
59. 1.524km WSW of Westmorland, CASun, Oct 25, 2:27 PM PST · 16412 days ago · 7 km deep · 40 km away
60. 2.168km SW of Alberto Oviedo Mota, B.C., MXSun, Oct 25, 7:58 PM PST · 16412 days ago · 6 km deep · 91 km away

The first 60 of 104.

Before

1. 1.612km WNW of Delta, B.C., MXTue, Sep 29, 5:03 PM PDT · 16438 days ago · 6 km deep · 43 km away
2. 1.511km ESE of Puebla, B.C., MXTue, Sep 29, 3:03 PM PDT · 16438 days ago · 6 km deep · 37 km away
3. 1.56km N of Delta, B.C., MXMon, Sep 28, 9:25 PM PDT · 16439 days ago · 6 km deep · 49 km away
4. 2.05km NNE of Delta, B.C., MXMon, Sep 28, 7:43 PM PDT · 16439 days ago · 6 km deep · 50 km away
5. 1.710km SW of Westmorland, CAMon, Sep 28, 3:12 PM PDT · 16439 days ago · 11 km deep · 35 km away
6. 1.56km WSW of Westmorland, CAMon, Sep 28, 10:43 AM PDT · 16439 days ago · 4 km deep · 39 km away
7. 2.06km N of Delta, B.C., MXMon, Sep 28, 9:38 AM PDT · 16439 days ago · 6 km deep · 48 km away
8. 2.47km NNW of Delta, B.C., MXMon, Sep 28, 9:21 AM PDT · 16439 days ago · 6 km deep · 45 km away
9. 2.69km NNW of Delta, B.C., MXMon, Sep 28, 9:12 AM PDT · 16439 days ago · 6 km deep · 45 km away
10. 2.05km N of Delta, B.C., MXMon, Sep 28, 8:55 AM PDT · 16439 days ago · 6 km deep · 49 km away
11. 1.85km NNW of Delta, B.C., MXMon, Sep 28, 8:38 AM PDT · 16439 days ago · 6 km deep · 47 km away
12. 2.810km SW of Westmorland, CAMon, Sep 28, 2:20 AM PDT · 16439 days ago · 14 km deep · 35 km away
13. 2.130km W of Alberto Oviedo Mota, B.C., MXSun, Sep 27, 11:21 AM PDT · 16440 days ago · 6 km deep · 56 km away
14. 2.710km SE of Julian, CASat, Sep 26, 3:55 PM PDT · 16441 days ago · 14 km deep · 95 km away
15. 2.09km SE of Julian, CASat, Sep 26, 11:54 AM PDT · 16441 days ago · 14 km deep · 96 km away
16. 1.624km ENE of Pine Valley, CAFri, Sep 25, 6:58 PM PDT · 16442 days ago · 5 km deep · 73 km away
17. 1.720km WSW of Westmorland, CAThu, Sep 24, 11:05 PM PDT · 16443 days ago · 5 km deep · 36 km away
18. 1.721km WSW of Westmorland, CAThu, Sep 24, 2:16 PM PDT · 16443 days ago · 8 km deep · 35 km away
19. 2.324km ESE of Julian, CAThu, Sep 24, 2:41 AM PDT · 16443 days ago · 6 km deep · 81 km away
20. 1.523km SE of Ocotillo Wells, CAThu, Sep 24, 12:16 AM PDT · 16443 days ago · 10 km deep · 49 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci523477. Read Thu, Oct 1, 2026, 6:14 PM UTC.