M1.6 earthquake 2 km ENE of Pacifica, California

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Jul 13, 1983, 9:37 PM PDT

UTC

1983-07-14 04:37:21 UTC

Depth

7.0 km (4.4 mi), shallow

Epicenter

37.621° N, 122.465° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.07

Depth from

From location

Station coverage gap

153°

Stations used

15

• Pacifica, CaliforniaPopulation 39,260. Forecast2 kmENE
• Daly City, CaliforniaPopulation 106,562. Forecast9 kmS
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast550 kmNW

After

1. 2.44 km NNW of San Leandro, CaliforniaThu, Jul 14, 12:27 AM PDT · 15785 days ago · 11 km deep · 29 km away
2. 2.314 km E of Seven Trees, CaliforniaThu, Jul 14, 6:40 PM PDT · 15784 days ago · 8 km deep · 78 km away
3. 1.75 km NE of Interlaken, CaliforniaThu, Jul 14, 9:22 PM PDT · 15784 days ago · 12 km deep · 98 km away
4. 1.914 km E of Seven Trees, CaliforniaFri, Jul 15, 3:12 AM PDT · 15784 days ago · 2 km deep · 79 km away
5. 1.75 km WSW of Moskowite Corner, CaliforniaFri, Jul 15, 8:06 PM PDT · 15783 days ago · 14 km deep · 91 km away
6. 2.19 km NE of Blackhawk, CaliforniaSun, Jul 17, 2:06 PM PDT · 15781 days ago · 1 km deep · 63 km away
7. 1.81 km SSW of Alamo, CaliforniaThu, Jul 21, 9:23 PM PDT · 15777 days ago · 6 km deep · 45 km away
8. 2.07 km W of Kenwood, CaliforniaFri, Jul 22, 8:45 PM PDT · 15776 days ago · 6 km deep · 89 km away
9. 1.84 km WSW of Moskowite Corner, CaliforniaSat, Jul 23, 7:46 AM PDT · 15776 days ago · 7 km deep · 92 km away
10. 2.17 km ESE of Santa Rosa, CaliforniaSat, Jul 23, 3:44 PM PDT · 15775 days ago · 6 km deep · 90 km away
11. 2.37 km WSW of Moskowite Corner, CaliforniaSun, Jul 24, 2:08 AM PDT · 15775 days ago · 8 km deep · 90 km away
12. 2.12 km E of San Leandro, CaliforniaMon, Jul 25, 3:30 PM PDT · 15773 days ago · 2 km deep · 32 km away
13. 2.514 km NE of Morgan Hill, CaliforniaTue, Jul 26, 9:05 AM PDT · 15772 days ago · 7 km deep · 94 km away
14. 1.817 km ENE of East Foothills, CaliforniaTue, Jul 26, 9:34 PM PDT · 15772 days ago · 5 km deep · 77 km away
15. 2.03 km N of East Foothills, CaliforniaWed, Jul 27, 4:14 PM PDT · 15771 days ago · 0 km deep · 61 km away
16. 1.99 km NE of San Martin, CaliforniaThu, Jul 28, 2:40 AM PDT · 15771 days ago · 7 km deep · 98 km away
17. 1.613 km SE of Sunol, CaliforniaThu, Jul 28, 6:26 AM PDT · 15771 days ago · 4 km deep · 62 km away
18. 1.69 km ESE of East Foothills, CaliforniaThu, Jul 28, 8:18 AM PDT · 15770 days ago · 8 km deep · 72 km away
19. 2.811 km SW of Muir Beach, CaliforniaThu, Jul 28, 11:59 AM PDT · 15770 days ago · 6 km deep · 25 km away
20. 2.916 km NE of East Foothills, CaliforniaThu, Jul 28, 5:03 PM PDT · 15770 days ago · 6 km deep · 73 km away
21. 2.515 km SE of Livermore, CaliforniaSun, Jul 31, 9:58 PM PDT · 15767 days ago · 2 km deep · 71 km away
22. 2.36 km ESE of Santa Rosa, CaliforniaMon, Aug 1, 8:11 PM PDT · 15766 days ago · 0 km deep · 90 km away
23. 1.91 km W of Broadmoor, CaliforniaTue, Aug 2, 12:34 AM PDT · 15766 days ago · 10 km deep · 8 km away
24. 2.39 km ESE of East Foothills, CaliforniaTue, Aug 2, 1:02 AM PDT · 15766 days ago · 3 km deep · 72 km away
25. 1.99 km ESE of East Foothills, CaliforniaTue, Aug 2, 8:18 AM PDT · 15765 days ago · 3 km deep · 72 km away
26. 2.02 km E of North Gate, CaliforniaThu, Aug 4, 9:15 AM PDT · 15763 days ago · 11 km deep · 53 km away
27. 2.39 km ESE of East Foothills, CaliforniaFri, Aug 5, 12:33 PM PDT · 15762 days ago · 7 km deep · 73 km away
28. 1.69 km ESE of East Foothills, CaliforniaFri, Aug 5, 12:34 PM PDT · 15762 days ago · 7 km deep · 73 km away
29. 1.58 km E of East Foothills, CaliforniaSat, Aug 6, 2:27 AM PDT · 15762 days ago · 7 km deep · 71 km away
30. 2.01 km E of Alamo, CaliforniaSun, Aug 7, 1:34 AM PDT · 15761 days ago · 9 km deep · 47 km away
31. 2.02 km E of Pacifica, CaliforniaMon, Aug 8, 4:17 AM PDT · 15760 days ago · 8 km deep · 1 km away
32. 1.63 km WSW of San Bruno, CaliforniaMon, Aug 8, 7:26 AM PDT · 15760 days ago · 8 km deep · 2 km away
33. 2.22 km SW of Pittsburg, CaliforniaMon, Aug 8, 3:12 PM PDT · 15759 days ago · 15 km deep · 66 km away
34. 1.50 km WSW of Pittsburg, CaliforniaMon, Aug 8, 5:09 PM PDT · 15759 days ago · 17 km deep · 67 km away
35. 1.95 km SW of Mountain House, CaliforniaTue, Aug 9, 9:42 AM PDT · 15758 days ago · 6 km deep · 79 km away
36. 1.515 km SE of Livermore, CaliforniaFri, Aug 12, 7:12 PM PDT · 15755 days ago · 4 km deep · 71 km away
37. 1.51 km SSW of Bodega Bay, CaliforniaSat, Aug 13, 4:02 AM PDT · 15755 days ago · 4 km deep · 94 km away
38. 2.410 km ENE of Blackhawk, CaliforniaSat, Aug 13, 4:19 PM PDT · 15754 days ago · 9 km deep · 64 km away
39. 2.110 km ENE of Blackhawk, CaliforniaSun, Aug 14, 12:39 AM PDT · 15754 days ago · 10 km deep · 65 km away
40. 2.17 km E of East Foothills, CaliforniaMon, Aug 15, 7:29 PM PDT · 15752 days ago · 9 km deep · 70 km away
41. 1.69 km ENE of San Martin, CaliforniaMon, Aug 15, 10:45 PM PDT · 15752 days ago · 9 km deep · 100 km away
42. 2.01 km E of Pacheco, CaliforniaWed, Aug 17, 3:27 PM PDT · 15750 days ago · 12 km deep · 54 km away
43. 2.04 km NNE of Glen Ellen, CaliforniaThu, Aug 18, 9:12 AM PDT · 15749 days ago · 3 km deep · 86 km away
44. 2.53 km ESE of Kenwood, CaliforniaThu, Aug 18, 5:02 PM PDT · 15749 days ago · 1 km deep · 87 km away
45. 1.611 km SSE of Livermore, CaliforniaFri, Aug 19, 5:00 AM PDT · 15749 days ago · 6 km deep · 67 km away
46. 2.34 km ENE of La Honda, CaliforniaFri, Aug 19, 11:57 AM PDT · 15748 days ago · 0 km deep · 38 km away
47. 1.912 km N of Livermore, CaliforniaFri, Aug 19, 11:32 PM PDT · 15748 days ago · 11 km deep · 65 km away
48. 1.612 km ESE of East Foothills, CaliforniaMon, Aug 22, 5:47 AM PDT · 15746 days ago · 4 km deep · 76 km away
49. 1.67 km E of East Foothills, CAWed, Aug 24, 12:49 PM PDT · 15743 days ago · 7 km deep · 69 km away
50. 1.75 km SW of Oakville, CaliforniaWed, Aug 24, 10:14 PM PDT · 15743 days ago · 4 km deep · 87 km away
51. 2.118 km ESE of Livermore, CaliforniaThu, Aug 25, 9:38 PM PDT · 15742 days ago · 4 km deep · 77 km away
52. 2.31 km NNE of Diablo, CaliforniaTue, Aug 30, 1:33 AM PDT · 15738 days ago · 9 km deep · 52 km away
53. 2.12 km SSW of Pittsburg, CaliforniaTue, Aug 30, 5:33 AM PDT · 15738 days ago · 16 km deep · 66 km away
54. 1.69 km ENE of Milpitas, CaliforniaWed, Aug 31, 9:11 AM PDT · 15736 days ago · 7 km deep · 60 km away
55. 1.7Northern CaliforniaWed, Aug 31, 8:37 PM PDT · 15736 days ago · 13 km deep · 78 km away
56. 2.03 km ENE of Fremont, CaliforniaSun, Sep 4, 2:53 AM PDT · 15733 days ago · 5 km deep · 46 km away
57. 1.714 km E of Seven Trees, CaliforniaMon, Sep 5, 4:54 AM PDT · 15732 days ago · 2 km deep · 79 km away
58. 2.110 km E of Blackhawk, CaliforniaMon, Sep 5, 2:10 PM PDT · 15731 days ago · 5 km deep · 64 km away
59. 3.03 km W of Livermore, CaliforniaThu, Sep 8, 12:45 PM PDT · 15728 days ago · 16 km deep · 58 km away
60. 1.63 km NNW of Clyde, CaliforniaFri, Sep 9, 11:30 AM PDT · 15727 days ago · 2 km deep · 61 km away

The first 60 of 65.

Before

1. 1.56 km NE of Rohnert Park, CaliforniaWed, Jul 13, 5:05 AM PDT · 15786 days ago · 4 km deep · 86 km away
2. 1.87 km NE of Interlaken, CaliforniaTue, Jul 12, 11:22 AM PDT · 15786 days ago · 4 km deep · 98 km away
3. 2.42 km E of East Foothills, CaliforniaMon, Jul 11, 6:03 AM PDT · 15788 days ago · 5 km deep · 65 km away
4. 1.820 km SSE of Livermore, CaliforniaSat, Jul 9, 3:56 PM PDT · 15789 days ago · 6 km deep · 73 km away
5. 2.88 km NE of Corralitos, CaliforniaSat, Jul 9, 1:32 AM PDT · 15790 days ago · 12 km deep · 92 km away
6. 1.73 km NNE of San Leandro, CaliforniaFri, Jul 8, 4:16 PM PDT · 15790 days ago · 7 km deep · 33 km away
7. 2.414 km NNE of Morgan Hill, CaliforniaFri, Jul 8, 12:31 PM PDT · 15790 days ago · 4 km deep · 89 km away
8. 2.317 km W of Diablo Grande, CaliforniaWed, Jul 6, 9:55 PM PDT · 15792 days ago · 6 km deep · 91 km away
9. 2.27 km E of East Foothills, CaliforniaMon, Jul 4, 10:46 PM PDT · 15794 days ago · 6 km deep · 71 km away
10. 2.01 km SSE of Green Valley, CaliforniaMon, Jul 4, 7:49 AM PDT · 15795 days ago · 11 km deep · 74 km away
11. 1.56 km NE of Rohnert Park, CaliforniaMon, Jul 4, 3:52 AM PDT · 15795 days ago · 0 km deep · 86 km away
12. 1.69 km NE of San Martin, CaliforniaSun, Jul 3, 10:18 PM PDT · 15795 days ago · 6 km deep · 97 km away
13. 1.54 km WSW of Loyola, CaliforniaSat, Jul 2, 9:42 PM PDT · 15796 days ago · 5 km deep · 42 km away
14. 2.15 km NW of San Leandro, CaliforniaSat, Jul 2, 2:48 PM PDT · 15796 days ago · 11 km deep · 29 km away
15. 2.016 km NE of East Foothills, CaliforniaFri, Jul 1, 4:02 PM PDT · 15797 days ago · 8 km deep · 70 km away
16. 2.022 km W of Diablo Grande, CaliforniaFri, Jul 1, 2:16 AM PDT · 15798 days ago · 6 km deep · 85 km away
17. 2.26 km NE of East Foothills, CaliforniaFri, Jul 1, 1:30 AM PDT · 15798 days ago · 5 km deep · 66 km away
18. 2.08 km ESE of East Foothills, CaliforniaThu, Jun 30, 7:44 PM PDT · 15798 days ago · 3 km deep · 71 km away
19. 1.56 km E of Fremont, CaliforniaThu, Jun 30, 1:27 PM PDT · 15798 days ago · 5 km deep · 49 km away
20. 1.94 km NNE of Pittsburg, CaliforniaWed, Jun 29, 3:46 PM PDT · 15799 days ago · 15 km deep · 73 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1098531. Read Thu, Oct 1, 2026, 2:45 AM UTC.