M2.3 earthquake 2 km ENE of Berkeley, California

Magnitude

2.3 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Aug 31, 1977, 5:56 AM PDT

UTC

1977-08-31 12:56:53 UTC

Depth

10.2 km (6.3 mi), shallow

Epicenter

37.881° N, 122.241° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

57°

Stations used

29

• Berkeley, CaliforniaPopulation 120,972. Forecast3 kmENE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast557 kmNW

After

1. 1.94 km NNE of Dublin, CaliforniaWed, Aug 31, 3:13 PM PDT · 17931 days ago · 8 km deep · 32 km away
2. 2.97 km WSW of Kenwood, CaliforniaWed, Aug 31, 4:39 PM PDT · 17931 days ago · 11 km deep · 66 km away
3. 1.97 km WSW of Kenwood, CaliforniaWed, Aug 31, 11:08 PM PDT · 17930 days ago · 10 km deep · 66 km away
4. 2.210 km N of Pittsburg, CaliforniaFri, Sep 2, 7:04 AM PDT · 17929 days ago · 19 km deep · 40 km away
5. 1.87 km ENE of Larkfield-Wikiup, CaliforniaFri, Sep 2, 6:58 PM PDT · 17929 days ago · 5 km deep · 82 km away
6. 2.05 km N of Dublin, CaliforniaSun, Sep 4, 10:40 AM PDT · 17927 days ago · 10 km deep · 31 km away
7. 1.8Northern CaliforniaSun, Sep 4, 6:15 PM PDT · 17927 days ago · 12 km deep · 30 km away
8. 3.79 km E of American Canyon, CaliforniaMon, Sep 5, 10:45 AM PDT · 17926 days ago · 10 km deep · 33 km away
9. 2.72 km S of Blackhawk, CaliforniaTue, Sep 6, 2:38 AM PDT · 17925 days ago · 7 km deep · 30 km away
10. 2.65 km ENE of East Foothills, CaliforniaTue, Sep 6, 2:55 AM PDT · 17925 days ago · 3 km deep · 68 km away
11. 1.521 km SE of Livermore, CaliforniaTue, Sep 6, 5:30 AM PDT · 17925 days ago · 10 km deep · 69 km away
12. 1.89 km ENE of Milpitas, CaliforniaTue, Sep 6, 1:33 PM PDT · 17925 days ago · 7 km deep · 59 km away
13. 2.48 km E of American Canyon, CaliforniaWed, Sep 7, 1:56 AM PDT · 17924 days ago · 4 km deep · 33 km away
14. 3.610 km NE of Healdsburg, CaliforniaWed, Sep 7, 5:28 PM PDT · 17924 days ago · 6 km deep · 98 km away
15. 1.710 km NE of Healdsburg, CaliforniaWed, Sep 7, 5:52 PM PDT · 17924 days ago · 5 km deep · 99 km away
16. 2.310 km NE of Healdsburg, CaliforniaWed, Sep 7, 9:23 PM PDT · 17924 days ago · 5 km deep · 99 km away
17. 1.811 km NE of Healdsburg, CaliforniaWed, Sep 7, 11:21 PM PDT · 17923 days ago · 6 km deep · 99 km away
18. 1.84 km E of Fremont, CaliforniaThu, Sep 8, 1:53 AM PDT · 17923 days ago · 4 km deep · 45 km away
19. 2.110 km NE of Healdsburg, CaliforniaThu, Sep 8, 3:47 AM PDT · 17923 days ago · 6 km deep · 99 km away
20. 1.810 km NE of Healdsburg, CaliforniaThu, Sep 8, 6:37 AM PDT · 17923 days ago · 6 km deep · 98 km away
21. 1.711 km NE of Healdsburg, CaliforniaFri, Sep 9, 3:52 AM PDT · 17922 days ago · 5 km deep · 99 km away
22. 2.23 km ENE of Waldon, CaliforniaFri, Sep 9, 10:30 AM PDT · 17922 days ago · 9 km deep · 20 km away
23. 2.811 km NE of Healdsburg, CaliforniaFri, Sep 9, 4:53 PM PDT · 17922 days ago · 6 km deep · 99 km away
24. 1.811 km NE of Healdsburg, CaliforniaSat, Sep 10, 8:39 PM PDT · 17921 days ago · 6 km deep · 99 km away
25. 1.910 km NE of Healdsburg, CaliforniaSat, Sep 10, 10:21 PM PDT · 17921 days ago · 5 km deep · 99 km away
26. 1.910 km NE of Healdsburg, CaliforniaSat, Sep 10, 10:30 PM PDT · 17921 days ago · 6 km deep · 99 km away
27. 2.410 km NE of Healdsburg, CaliforniaSat, Sep 10, 10:58 PM PDT · 17920 days ago · 5 km deep · 99 km away
28. 2.310 km NE of Healdsburg, CaliforniaSun, Sep 11, 12:39 AM PDT · 17920 days ago · 5 km deep · 99 km away
29. 1.810 km NE of Healdsburg, CaliforniaSun, Sep 11, 5:30 AM PDT · 17920 days ago · 5 km deep · 99 km away
30. 1.910 km NE of Healdsburg, CaliforniaSun, Sep 11, 5:33 AM PDT · 17920 days ago · 5 km deep · 99 km away
31. 3.38 km E of American Canyon, CaliforniaSun, Sep 11, 2:03 PM PDT · 17920 days ago · 4 km deep · 33 km away
32. 3.810 km NE of Healdsburg, CaliforniaSun, Sep 11, 4:46 PM PDT · 17920 days ago · 6 km deep · 99 km away
33. 2.39 km S of Green Valley, CaliforniaSun, Sep 11, 6:17 PM PDT · 17920 days ago · 2 km deep · 33 km away
34. 1.811 km NE of Healdsburg, CaliforniaSun, Sep 11, 6:52 PM PDT · 17920 days ago · 5 km deep · 99 km away
35. 1.54 km NE of Santa Rosa, CaliforniaMon, Sep 12, 4:46 AM PDT · 17919 days ago · 8 km deep · 76 km away
36. 1.910 km NE of Healdsburg, CaliforniaMon, Sep 12, 5:03 AM PDT · 17919 days ago · 6 km deep · 99 km away
37. 1.87 km ENE of Seven Trees, CaliforniaMon, Sep 12, 9:27 AM PDT · 17919 days ago · 6 km deep · 76 km away
38. 2.410 km NE of Healdsburg, CaliforniaMon, Sep 12, 11:18 PM PDT · 17918 days ago · 4 km deep · 99 km away
39. 1.711 km NE of Healdsburg, CaliforniaTue, Sep 13, 4:26 AM PDT · 17918 days ago · 5 km deep · 99 km away
40. 2.511 km NE of Healdsburg, CaliforniaTue, Sep 13, 2:18 PM PDT · 17918 days ago · 5 km deep · 99 km away
41. 1.512 km NE of Healdsburg, CaliforniaTue, Sep 13, 2:18 PM PDT · 17918 days ago · 4 km deep · 99 km away
42. 1.811 km NE of Healdsburg, CaliforniaTue, Sep 13, 4:06 PM PDT · 17918 days ago · 5 km deep · 100 km away
43. 1.811 km ENE of Healdsburg, CaliforniaThu, Sep 15, 9:50 PM PDT · 17916 days ago · 6 km deep · 98 km away
44. 1.511 km ENE of Healdsburg, CaliforniaThu, Sep 15, 10:54 PM PDT · 17915 days ago · 6 km deep · 98 km away
45. 1.711 km NE of Healdsburg, CaliforniaFri, Sep 16, 1:51 AM PDT · 17915 days ago · 5 km deep · 99 km away
46. 2.111 km NE of Healdsburg, CaliforniaFri, Sep 16, 8:24 AM PDT · 17915 days ago · 5 km deep · 100 km away
47. 2.411 km NE of Healdsburg, CaliforniaSat, Sep 17, 10:11 AM PDT · 17914 days ago · 5 km deep · 100 km away
48. 1.711 km NE of Healdsburg, CaliforniaSun, Sep 18, 5:02 AM PDT · 17913 days ago · 5 km deep · 100 km away
49. 2.013 km SSE of Livermore, CaliforniaSun, Sep 18, 11:32 AM PDT · 17913 days ago · 5 km deep · 59 km away
50. 2.611 km NE of Healdsburg, CaliforniaWed, Sep 21, 7:46 PM PDT · 17910 days ago · 5 km deep · 100 km away
51. 2.1Northern CaliforniaThu, Sep 22, 3:01 AM PDT · 17909 days ago · 7 km deep · 91 km away
52. 1.810 km NE of Healdsburg, CaliforniaFri, Sep 23, 1:23 AM PDT · 17908 days ago · 5 km deep · 99 km away
53. 2.010 km NE of Healdsburg, CaliforniaFri, Sep 23, 1:20 PM PDT · 17908 days ago · 5 km deep · 98 km away
54. 2.9Northern CaliforniaSun, Sep 25, 10:28 AM PDT · 17906 days ago · 7 km deep · 74 km away
55. 1.58 km ESE of East Foothills, CaliforniaSun, Sep 25, 8:29 PM PDT · 17906 days ago · 7 km deep · 74 km away
56. 1.514 km E of Seven Trees, CaliforniaMon, Sep 26, 11:55 PM PDT · 17904 days ago · 1 km deep · 82 km away
57. 1.811 km NE of Healdsburg, CaliforniaTue, Sep 27, 5:35 AM PDT · 17904 days ago · 4 km deep · 99 km away
58. 1.611 km NE of Healdsburg, CaliforniaTue, Sep 27, 7:00 PM PDT · 17904 days ago · 6 km deep · 100 km away
59. 2.02 km NNW of Pittsburg, CaliforniaWed, Sep 28, 1:44 AM PDT · 17903 days ago · 18 km deep · 35 km away
60. 1.914 km ENE of East Foothills, CaliforniaThu, Sep 29, 3:17 PM PDT · 17902 days ago · 7 km deep · 72 km away

The first 60 of 88.

Before

1. 1.76 km NNE of Pittsburg, CaliforniaTue, Aug 30, 2:58 PM PDT · 17932 days ago · 6 km deep · 40 km away
2. 1.82 km E of North Gate, CaliforniaMon, Aug 29, 6:41 AM PDT · 17933 days ago · 13 km deep · 24 km away
3. 1.710 km ENE of Blackhawk, CaliforniaMon, Aug 29, 3:31 AM PDT · 17933 days ago · 15 km deep · 39 km away
4. 2.82 km E of North Gate, CaliforniaSat, Aug 27, 2:43 PM PDT · 17935 days ago · 15 km deep · 24 km away
5. 1.63 km NE of Blackhawk, CaliforniaWed, Aug 24, 6:53 PM PDT · 17938 days ago · 5 km deep · 32 km away
6. 1.52 km W of Cambrian Park, CaliforniaWed, Aug 24, 2:52 PM PDT · 17938 days ago · 8 km deep · 74 km away
7. 2.01 km WNW of Cambrian Park, CaliforniaSun, Aug 21, 9:06 PM PDT · 17941 days ago · 8 km deep · 73 km away
8. 1.812 km NE of Healdsburg, CaliforniaSat, Aug 20, 1:00 PM PDT · 17942 days ago · 3 km deep · 99 km away
9. 1.76 km NE of East Foothills, CaliforniaThu, Aug 18, 5:04 AM PDT · 17944 days ago · 8 km deep · 67 km away
10. 3.36 km NE of East Foothills, CaliforniaThu, Aug 18, 4:58 AM PDT · 17944 days ago · 7 km deep · 67 km away
11. 2.42 km WNW of Cambrian Park, CaliforniaWed, Aug 17, 5:41 PM PDT · 17945 days ago · 9 km deep · 73 km away
12. 1.63 km NE of Dublin, CaliforniaWed, Aug 17, 3:29 PM PDT · 17945 days ago · 5 km deep · 33 km away
13. 2.93 km NNE of Dublin, CaliforniaWed, Aug 17, 3:27 PM PDT · 17945 days ago · 8 km deep · 33 km away
14. 1.63 km NNE of Dublin, CaliforniaWed, Aug 17, 10:40 AM PDT · 17945 days ago · 6 km deep · 33 km away
15. 1.73 km NE of Dublin, CaliforniaTue, Aug 16, 7:56 AM PDT · 17946 days ago · 7 km deep · 34 km away
16. 2.618 km E of East Foothills, CaliforniaTue, Aug 16, 7:24 AM PDT · 17946 days ago · 6 km deep · 81 km away
17. 1.56 km ENE of East Foothills, CaliforniaTue, Aug 16, 7:18 AM PDT · 17946 days ago · 6 km deep · 69 km away
18. 2.110 km NE of Healdsburg, CaliforniaMon, Aug 15, 11:03 AM PDT · 17947 days ago · 5 km deep · 98 km away
19. 2.03 km NE of Dublin, CaliforniaMon, Aug 15, 9:36 AM PDT · 17947 days ago · 6 km deep · 33 km away
20. 1.83 km NE of Dublin, CaliforniaMon, Aug 15, 5:53 AM PDT · 17947 days ago · 7 km deep · 34 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1036571. Read Sun, Oct 4, 2026, 5:07 PM UTC.