M1.7 earthquake 13 km N of Pittsburg, California

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, May 11, 1977, 10:17 AM PDT

UTC

1977-05-11 17:17:36 UTC

Depth

17.7 km (11.0 mi), shallow

Epicenter

38.153° N, 121.897° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

112°

Stations used

14

• Pittsburg, CaliforniaPopulation 69,424. Forecast14 kmN
• Fairfield, CaliforniaPopulation 112,970. Forecast16 kmSE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast562 kmNW

After

1. 2.21 km SE of Rocklin, CaliforniaSun, May 15, 8:28 AM PDT · 18040 days ago · 14 km deep · 91 km away
2. 2.713 km N of Pittsburg, CaliforniaSun, May 15, 12:28 PM PDT · 18039 days ago · 21 km deep · 1 km away
3. 1.612 km SE of Suisun, CaliforniaSun, May 15, 5:12 PM PDT · 18039 days ago · 6 km deep · 4 km away
4. 2.16 km N of East Foothills, CaliforniaTue, May 17, 2:27 AM PDT · 18038 days ago · 5 km deep · 79 km away
5. 1.79 km NNE of East Foothills, CaliforniaSun, May 22, 10:35 AM PDT · 18032 days ago · 8 km deep · 78 km away
6. 1.99 km S of Calistoga, CaliforniaWed, May 25, 9:09 AM PDT · 18029 days ago · 7 km deep · 71 km away
7. 1.73 km NNW of Larkfield-Wikiup, CaliforniaSun, May 29, 7:24 AM PDT · 18026 days ago · 3 km deep · 87 km away
8. 2.25 km WSW of Moskowite Corner, CaliforniaMon, May 30, 5:16 AM PDT · 18025 days ago · 6 km deep · 42 km away
9. 3.113 km N of Pittsburg, CaliforniaTue, May 31, 3:56 PM PDT · 18023 days ago · 20 km deep · 1 km away
10. 2.312 km NNW of Pittsburg, CaliforniaWed, Jun 1, 2:38 AM PDT · 18023 days ago · 22 km deep · 2 km away
11. 2.014 km N of Pittsburg, CaliforniaWed, Jun 1, 2:43 AM PDT · 18023 days ago · 19 km deep · 1 km away
12. 2.113 km N of Pittsburg, CaliforniaWed, Jun 1, 6:31 AM PDT · 18023 days ago · 19 km deep · 1 km away
13. 1.89 km NNW of Kenwood, CaliforniaSat, Jun 4, 11:02 AM PDT · 18019 days ago · 7 km deep · 72 km away
14. 3.813 km N of Pittsburg, CaliforniaSat, Jun 4, 1:57 PM PDT · 18019 days ago · 20 km deep · 1 km away
15. 1.914 km N of Pittsburg, CaliforniaSat, Jun 4, 2:00 PM PDT · 18019 days ago · 16 km deep · 1 km away
16. 3.013 km N of Pittsburg, CaliforniaSat, Jun 4, 2:06 PM PDT · 18019 days ago · 20 km deep · 0 km away
17. 2.015 km ESE of Suisun, CaliforniaSat, Jun 4, 3:30 PM PDT · 18019 days ago · 19 km deep · 2 km away
18. 2.413 km N of Pittsburg, CaliforniaSat, Jun 4, 6:02 PM PDT · 18019 days ago · 20 km deep · 1 km away
19. 1.914 km N of Pittsburg, CaliforniaSat, Jun 4, 8:32 PM PDT · 18019 days ago · 21 km deep · 2 km away
20. 1.813 km N of Pittsburg, CaliforniaSat, Jun 4, 9:18 PM PDT · 18019 days ago · 20 km deep · 2 km away
21. 1.712 km SE of Suisun, CaliforniaSun, Jun 5, 9:50 AM PDT · 18018 days ago · 6 km deep · 3 km away
22. 2.6Northern CaliforniaSun, Jun 5, 2:38 PM PDT · 18018 days ago · 21 km deep · 1 km away
23. 1.814 km N of Pittsburg, CaliforniaSun, Jun 5, 8:41 PM PDT · 18018 days ago · 17 km deep · 0 km away
24. 2.115 km ESE of Suisun, CaliforniaSun, Jun 5, 10:50 PM PDT · 18018 days ago · 18 km deep · 2 km away
25. 2.113 km N of Pittsburg, CaliforniaMon, Jun 6, 5:17 AM PDT · 18018 days ago · 21 km deep · 1 km away
26. 2.013 km N of Pittsburg, CaliforniaMon, Jun 6, 6:16 AM PDT · 18018 days ago · 19 km deep · 0 km away
27. 1.915 km N of Pittsburg, CaliforniaMon, Jun 6, 9:17 AM PDT · 18017 days ago · 20 km deep · 2 km away
28. 3.014 km N of Pittsburg, CaliforniaMon, Jun 6, 9:38 AM PDT · 18017 days ago · 18 km deep · 0 km away
29. 1.87 km SSW of Calistoga, CaliforniaThu, Jun 9, 3:20 PM PDT · 18014 days ago · 3 km deep · 74 km away
30. 1.85 km WSW of Glen Ellen, CaliforniaThu, Jun 9, 5:36 PM PDT · 18014 days ago · 7 km deep · 63 km away
31. 2.05 km SW of Glen Ellen, CaliforniaFri, Jun 10, 3:08 PM PDT · 18013 days ago · 8 km deep · 63 km away
32. 2.17 km E of East Foothills, CaliforniaSun, Jun 12, 6:42 AM PDT · 18012 days ago · 6 km deep · 88 km away
33. 1.714 km E of Seven Trees, CaliforniaSun, Jun 12, 10:46 PM PDT · 18011 days ago · 3 km deep · 98 km away
34. 2.616 km W of Diablo Grande, CaliforniaMon, Jun 13, 8:21 AM PDT · 18011 days ago · 6 km deep · 93 km away
35. 1.613 km E of Seven Trees, CaliforniaMon, Jun 13, 11:16 AM PDT · 18010 days ago · 5 km deep · 97 km away
36. 2.07 km SSW of Calistoga, CaliforniaWed, Jun 15, 10:52 AM PDT · 18008 days ago · 3 km deep · 75 km away
37. 2.48 km ENE of Blackhawk, CaliforniaFri, Jun 17, 5:42 AM PDT · 18007 days ago · 12 km deep · 35 km away
38. 2.08 km ENE of Blackhawk, CaliforniaFri, Jun 17, 6:23 AM PDT · 18007 days ago · 12 km deep · 35 km away
39. 3.613 km N of Pittsburg, CaliforniaFri, Jun 17, 12:38 PM PDT · 18006 days ago · 20 km deep · 1 km away
40. 1.813 km N of Pittsburg, CaliforniaFri, Jun 17, 12:59 PM PDT · 18006 days ago · 21 km deep · 1 km away
41. 3.02 km N of Antelope, CaliforniaFri, Jun 17, 4:30 PM PDT · 18006 days ago · 5 km deep · 81 km away
42. 3.08 km ENE of Blackhawk, CaliforniaFri, Jun 17, 8:06 PM PDT · 18006 days ago · 13 km deep · 35 km away
43. 2.89 km ENE of Blackhawk, CaliforniaFri, Jun 17, 8:21 PM PDT · 18006 days ago · 14 km deep · 35 km away
44. 1.711 km SE of Livermore, CaliforniaSun, Jun 19, 7:24 AM PDT · 18005 days ago · 11 km deep · 63 km away
45. 4.410 km ESE of Livermore, CaliforniaMon, Jun 20, 7:43 PM PDT · 18003 days ago · 11 km deep · 61 km away
46. 1.810 km SE of Livermore, CaliforniaMon, Jun 20, 7:56 PM PDT · 18003 days ago · 9 km deep · 62 km away
47. 1.9Northern CaliforniaWed, Jun 22, 9:14 AM PDT · 18001 days ago · 8 km deep · 62 km away
48. 2.211 km SE of Livermore, CaliforniaThu, Jun 23, 4:59 AM PDT · 18001 days ago · 10 km deep · 63 km away
49. 1.924 km SE of Livermore, CaliforniaThu, Jun 23, 11:22 AM PDT · 18000 days ago · 5 km deep · 76 km away
50. 2.510 km ESE of Livermore, CaliforniaThu, Jun 23, 12:36 PM PDT · 18000 days ago · 11 km deep · 61 km away
51. 1.714 km SE of Livermore, CaliforniaSat, Jun 25, 7:10 AM PDT · 17999 days ago · 6 km deep · 67 km away
52. 1.92 km SE of Ladera, CaliforniaSun, Jun 26, 9:28 PM PDT · 17997 days ago · 6 km deep · 90 km away
53. 3.114 km SE of Livermore, CaliforniaTue, Jun 28, 5:46 AM PDT · 17996 days ago · 7 km deep · 67 km away
54. 2.514 km SE of Livermore, CaliforniaTue, Jun 28, 6:04 AM PDT · 17996 days ago · 7 km deep · 67 km away
55. 2.013 km SE of Livermore, CaliforniaTue, Jun 28, 3:00 PM PDT · 17995 days ago · 6 km deep · 66 km away
56. 2.29 km NW of Moskowite Corner, CaliforniaThu, Jun 30, 12:52 AM PDT · 17994 days ago · 14 km deep · 51 km away
57. 1.613 km ENE of Hidden Valley Lake, CaliforniaThu, Jun 30, 11:17 AM PDT · 17993 days ago · 16 km deep · 88 km away
58. 2.41 km SE of Hayward, CaliforniaFri, Jul 1, 12:51 PM PDT · 17992 days ago · 6 km deep · 57 km away
59. 2.114 km ESE of Suisun, CaliforniaSat, Jul 2, 12:19 PM PDT · 17991 days ago · 18 km deep · 2 km away
60. 1.63 km SSE of Fairview, CaliforniaSat, Jul 2, 6:44 PM PDT · 17991 days ago · 3 km deep · 58 km away

The first 60 of 71.

Before

1. 1.61 km SSE of Rocklin, CaliforniaMon, May 9, 12:58 AM PDT · 18046 days ago · 13 km deep · 91 km away
2. 2.813 km N of Pittsburg, CaliforniaSat, May 7, 11:29 PM PDT · 18047 days ago · 20 km deep · 1 km away
3. 1.72 km ENE of San Leandro, CaliforniaFri, May 6, 10:56 AM PDT · 18048 days ago · 3 km deep · 51 km away
4. 2.013 km N of Pittsburg, CaliforniaFri, May 6, 9:58 AM PDT · 18048 days ago · 20 km deep · 2 km away
5. 2.313 km N of Pittsburg, CaliforniaFri, May 6, 8:54 AM PDT · 18048 days ago · 20 km deep · 2 km away
6. 2.115 km SE of Suisun, CaliforniaFri, May 6, 2:27 AM PDT · 18049 days ago · 18 km deep · 1 km away
7. 1.812 km SE of Suisun, CaliforniaThu, May 5, 9:41 PM PDT · 18049 days ago · 0 km deep · 5 km away
8. 2.213 km SE of Suisun, CaliforniaThu, May 5, 3:43 PM PDT · 18049 days ago · 19 km deep · 3 km away
9. 3.313 km N of Pittsburg, CaliforniaThu, May 5, 3:40 PM PDT · 18049 days ago · 20 km deep · 1 km away
10. 2.613 km N of Pittsburg, CaliforniaWed, May 4, 11:37 PM PDT · 18050 days ago · 20 km deep · 1 km away
11. 2.413 km N of Pittsburg, CaliforniaWed, May 4, 9:31 PM PDT · 18050 days ago · 21 km deep · 1 km away
12. 1.93 km SE of La Honda, CaliforniaWed, May 4, 9:11 PM PDT · 18050 days ago · 8 km deep · 100 km away
13. 3.213 km N of Pittsburg, CaliforniaWed, May 4, 12:43 PM PDT · 18050 days ago · 20 km deep · 1 km away
14. 1.94 km S of Crockett, CaliforniaSat, Apr 30, 10:31 PM PDT · 18054 days ago · 9 km deep · 31 km away
15. 1.5Northern CaliforniaFri, Apr 29, 1:54 PM PDT · 18055 days ago · 7 km deep · 66 km away
16. 2.113 km E of East Foothills, CaliforniaFri, Apr 29, 8:22 AM PDT · 18056 days ago · 8 km deep · 90 km away
17. 1.78 km S of Muir Beach, CaliforniaWed, Apr 27, 8:43 PM PDT · 18057 days ago · 8 km deep · 73 km away
18. 1.97 km ESE of Fremont, CaliforniaWed, Apr 27, 4:21 PM PDT · 18057 days ago · 0 km deep · 71 km away
19. 1.813 km E of East Foothills, CaliforniaTue, Apr 26, 4:34 PM PDT · 18058 days ago · 8 km deep · 90 km away
20. 1.92 km E of Berkeley, CaliforniaSat, Apr 16, 11:14 PM PST · 18068 days ago · 10 km deep · 43 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1035113. Read Mon, Oct 5, 2026, 3:23 AM UTC.