M1.7 earthquake 10 km ENE of Patterson, California

Magnitude

1.7 (ma), micro

Local time

Fri, Oct 14, 1977, 1:38 AM PDT

UTC

1977-10-14 08:38:08 UTC

Depth

12.8 km (7.9 mi), shallow

Epicenter

37.508° N, 121.025° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.6 km horizontally, 1.9 km in depth

Magnitude uncertainty

±0.07

Depth from

From location

Station coverage gap

82°

Stations used

32

• Patterson, CaliforniaPopulation 21,498. Forecast10 kmENE
• Modesto, CaliforniaPopulation 211,266. Forecast15 kmS
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast459 kmNNW

After

1. 1.59 km NW of Hollister, CaliforniaFri, Oct 14, 11:16 AM PDT · 17875 days ago · 0 km deep · 76 km away
2. 1.68 km NE of San Juan Bautista, CaliforniaFri, Oct 14, 9:02 PM PDT · 17874 days ago · 10 km deep · 79 km away
3. 1.76 km WSW of Gilroy, CaliforniaSat, Oct 15, 6:21 AM PDT · 17874 days ago · 4 km deep · 79 km away
4. 1.610 km NNW of Hollister, CaliforniaSat, Oct 15, 7:53 AM PDT · 17874 days ago · 7 km deep · 72 km away
5. 1.76 km WSW of Gilroy, CaliforniaSat, Oct 15, 8:33 AM PDT · 17874 days ago · 4 km deep · 80 km away
6. 1.917 km E of East Foothills, CaliforniaSat, Oct 15, 9:20 AM PDT · 17874 days ago · 6 km deep · 55 km away
7. 2.56 km WSW of Gilroy, CaliforniaSat, Oct 15, 9:32 PM PDT · 17873 days ago · 5 km deep · 80 km away
8. 1.88 km NNE of San Juan Bautista, CaliforniaSun, Oct 16, 2:48 PM PDT · 17873 days ago · 5 km deep · 78 km away
9. 1.58 km NNE of San Juan Bautista, CaliforniaSun, Oct 16, 3:08 PM PDT · 17873 days ago · 3 km deep · 78 km away
10. 2.49 km NW of Hollister, CaliforniaSun, Oct 16, 4:24 PM PDT · 17873 days ago · 1 km deep · 76 km away
11. 1.59 km NW of Hollister, CaliforniaSun, Oct 16, 5:34 PM PDT · 17872 days ago · 0 km deep · 76 km away
12. 1.6Central CaliforniaSun, Oct 16, 8:17 PM PDT · 17872 days ago · 6 km deep · 84 km away
13. 1.839 km SSW of South Dos Palos, CaliforniaWed, Oct 19, 9:08 AM PDT · 17870 days ago · 3 km deep · 95 km away
14. 1.716 km NNE of Morgan Hill, CaliforniaThu, Oct 20, 7:27 PM PDT · 17868 days ago · 7 km deep · 57 km away
15. 2.015 km N of Morgan Hill, CaliforniaFri, Oct 21, 3:51 AM PDT · 17868 days ago · 7 km deep · 61 km away
16. 2.115 km SSE of Tres Pinos, CaliforniaMon, Oct 24, 11:33 AM PDT · 17865 days ago · 3 km deep · 97 km away
17. 3.115 km SSE of Tres Pinos, CaliforniaMon, Oct 24, 12:08 PM PDT · 17865 days ago · 3 km deep · 97 km away
18. 2.88 km NW of Hollister, CaliforniaTue, Oct 25, 5:49 PM PDT · 17863 days ago · 8 km deep · 77 km away
19. 1.914 km E of Seven Trees, CaliforniaTue, Oct 25, 7:41 PM PDT · 17863 days ago · 3 km deep · 62 km away
20. 1.715 km E of Seven Trees, CaliforniaTue, Oct 25, 7:50 PM PDT · 17863 days ago · 3 km deep · 62 km away
21. 2.16 km SSE of San Juan Bautista, CaliforniaWed, Oct 26, 8:08 AM PDT · 17863 days ago · 8 km deep · 91 km away
22. 2.218 km E of Tres Pinos, CaliforniaThu, Oct 27, 6:19 PM PDT · 17861 days ago · 0 km deep · 82 km away
23. 2.414 km SSE of Tres Pinos, CaliforniaFri, Oct 28, 7:51 AM PDT · 17861 days ago · 4 km deep · 97 km away
24. 1.614 km SSE of Tres Pinos, CaliforniaFri, Oct 28, 7:52 AM PDT · 17861 days ago · 3 km deep · 97 km away
25. 1.912 km S of Tres Pinos, CaliforniaFri, Oct 28, 7:53 AM PDT · 17861 days ago · 3 km deep · 95 km away
26. 2.19 km S of Tres Pinos, CaliforniaFri, Oct 28, 6:29 PM PDT · 17860 days ago · 2 km deep · 94 km away
27. 1.82 km WSW of San Juan Bautista, CaliforniaSat, Oct 29, 4:16 AM PDT · 17860 days ago · 3 km deep · 88 km away
28. 2.215 km SSE of Tres Pinos, CaliforniaSun, Oct 30, 4:54 AM PST · 17859 days ago · 3 km deep · 97 km away
29. 2.66 km E of East Foothills, CaliforniaMon, Oct 31, 9:05 PM PST · 17857 days ago · 6 km deep · 65 km away
30. 2.67 km NNE of Interlaken, CaliforniaTue, Nov 1, 6:49 PM PST · 17856 days ago · 9 km deep · 82 km away
31. 2.410 km S of Tres Pinos, CaliforniaWed, Nov 2, 12:24 PM PST · 17856 days ago · 5 km deep · 94 km away
32. 1.912 km N of Morgan Hill, CaliforniaThu, Nov 3, 5:12 AM PST · 17855 days ago · 4 km deep · 61 km away
33. 1.99 km NW of Hollister, CaliforniaThu, Nov 3, 10:27 PM PST · 17854 days ago · 7 km deep · 77 km away
34. 2.18 km SE of Livermore, CaliforniaFri, Nov 4, 11:20 PM PST · 17853 days ago · 6 km deep · 60 km away
35. 2.08 km SE of Livermore, CaliforniaSat, Nov 5, 1:31 AM PST · 17853 days ago · 6 km deep · 61 km away
36. 2.14 km SSE of San Juan Bautista, CaliforniaSat, Nov 5, 1:35 AM PST · 17853 days ago · 6 km deep · 89 km away
37. 2.59 km NW of Hollister, CaliforniaSat, Nov 5, 5:23 AM PST · 17853 days ago · 7 km deep · 77 km away
38. 1.69 km SE of Livermore, CaliforniaSat, Nov 5, 3:54 PM PST · 17852 days ago · 5 km deep · 61 km away
39. 2.2Northern CaliforniaSat, Nov 5, 4:03 PM PST · 17852 days ago · 7 km deep · 64 km away
40. 1.720 km ESE of Tres Pinos, CaliforniaSun, Nov 6, 5:59 PM PST · 17851 days ago · 0 km deep · 88 km away
41. 2.025 km E of Tres Pinos, CaliforniaMon, Nov 7, 4:46 AM PST · 17851 days ago · 0 km deep · 80 km away
42. 1.518 km ENE of East Foothills, CaliforniaTue, Nov 8, 5:59 PM PST · 17849 days ago · 7 km deep · 53 km away
43. 2.58 km ENE of Milpitas, CaliforniaWed, Nov 9, 2:27 PM PST · 17849 days ago · 6 km deep · 70 km away
44. 1.710 km NW of Hollister, CaliforniaFri, Nov 11, 11:56 AM PST · 17847 days ago · 0 km deep · 76 km away
45. 2.210 km NNE of San Juan Bautista, CaliforniaFri, Nov 11, 4:34 PM PST · 17846 days ago · 0 km deep · 76 km away
46. 1.819 km NE of East Foothills, CaliforniaSat, Nov 12, 1:43 AM PST · 17846 days ago · 6 km deep · 54 km away
47. 1.51 km NE of Diablo, CaliforniaSun, Nov 13, 7:23 AM PST · 17845 days ago · 6 km deep · 89 km away
48. 2.08 km NNE of Interlaken, CaliforniaSun, Nov 13, 6:55 PM PST · 17844 days ago · 8 km deep · 81 km away
49. 1.62 km NE of Ridgemark, CaliforniaMon, Nov 14, 1:33 PM PST · 17844 days ago · 6 km deep · 81 km away
50. 1.68 km SSW of Tres Pinos, CaliforniaMon, Nov 14, 10:14 PM PST · 17843 days ago · 3 km deep · 93 km away
51. 1.63 km S of San Juan Bautista, CaliforniaWed, Nov 16, 1:53 AM PST · 17842 days ago · 7 km deep · 90 km away
52. 1.51 km E of Tres Pinos, CaliforniaWed, Nov 16, 12:12 PM PST · 17842 days ago · 8 km deep · 84 km away
53. 2.216 km E of Seven Trees, CaliforniaWed, Nov 16, 10:08 PM PST · 17841 days ago · 8 km deep · 60 km away
54. 1.94 km SE of Tres Pinos, CaliforniaThu, Nov 17, 7:54 PM PST · 17840 days ago · 8 km deep · 86 km away
55. 2.627 km E of Tres Pinos, CaliforniaFri, Nov 18, 8:36 AM PST · 17840 days ago · 6 km deep · 83 km away
56. 1.84 km E of East Foothills, CaliforniaSat, Nov 19, 1:47 AM PST · 17839 days ago · 1 km deep · 67 km away
57. 2.6Northern CaliforniaSat, Nov 19, 10:36 AM PST · 17839 days ago · 1 km deep · 67 km away
58. 2.06 km WSW of Gilroy, CaliforniaSat, Nov 19, 4:23 PM PST · 17838 days ago · 3 km deep · 79 km away
59. 1.86 km WSW of Gilroy, CaliforniaSun, Nov 20, 11:15 PM PST · 17837 days ago · 3 km deep · 79 km away
60. 1.6Northern CaliforniaTue, Nov 22, 11:33 PM PST · 17835 days ago · 9 km deep · 64 km away

The first 60 of 98.

Before

1. 2.42 km E of North Gate, CaliforniaThu, Oct 13, 6:48 PM PDT · 17875 days ago · 15 km deep · 94 km away
2. 2.28 km W of Gilroy, CaliforniaThu, Oct 13, 5:40 PM PDT · 17875 days ago · 3 km deep · 80 km away
3. 3.77 km ENE of Patterson, CaliforniaThu, Oct 13, 9:10 AM PDT · 17876 days ago · 15 km deep · 2 km away
4. 1.720 km NNE of Morgan Hill, CaliforniaThu, Oct 13, 6:03 AM PDT · 17876 days ago · 4 km deep · 52 km away
5. 2.78 km ENE of Patterson, CaliforniaWed, Oct 12, 11:04 PM PDT · 17876 days ago · 17 km deep · 2 km away
6. 1.89 km ESE of Lexington Hills, CaliforniaWed, Oct 12, 12:56 PM PDT · 17877 days ago · 11 km deep · 87 km away
7. 2.05 km ESE of East Foothills, CaliforniaWed, Oct 12, 5:35 AM PDT · 17877 days ago · 0 km deep · 66 km away
8. 2.24 km E of East Foothills, CaliforniaTue, Oct 11, 4:05 AM PDT · 17878 days ago · 1 km deep · 67 km away
9. 3.02 km WSW of San Juan Bautista, CaliforniaMon, Oct 10, 5:35 PM PDT · 17878 days ago · 7 km deep · 89 km away
10. 2.318 km WSW of South Dos Palos, CaliforniaMon, Oct 10, 3:11 AM PDT · 17879 days ago · 3 km deep · 71 km away
11. 2.111 km NNE of Morgan Hill, CaliforniaSun, Oct 9, 9:01 PM PDT · 17879 days ago · 5 km deep · 61 km away
12. 1.95 km NNW of El Nido, CaliforniaSun, Oct 9, 5:29 PM PDT · 17879 days ago · 2 km deep · 58 km away
13. 2.58 km ESE of East Foothills, CaliforniaSat, Oct 8, 8:26 PM PDT · 17880 days ago · 8 km deep · 64 km away
14. 2.07 km WSW of Gilroy, CaliforniaSat, Oct 8, 9:19 AM PDT · 17881 days ago · 5 km deep · 80 km away
15. 1.83 km SW of Ridgemark, CaliforniaSat, Oct 8, 4:13 AM PDT · 17881 days ago · 5 km deep · 86 km away
16. 2.04 km WNW of San Juan Bautista, CaliforniaFri, Oct 7, 3:18 PM PDT · 17882 days ago · 6 km deep · 88 km away
17. 1.65 km SW of Gilroy, CaliforniaThu, Oct 6, 1:37 PM PDT · 17883 days ago · 4 km deep · 79 km away
18. 2.7Northern CaliforniaTue, Oct 4, 4:26 AM PDT · 17885 days ago · 2 km deep · 61 km away
19. 1.79 km SE of San Juan Bautista, CaliforniaTue, Oct 4, 3:51 AM PDT · 17885 days ago · 5 km deep · 90 km away
20. 1.86 km WNW of Saratoga, CaliforniaMon, Oct 3, 9:20 AM PDT · 17886 days ago · 10 km deep · 98 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1037250. Read Tue, Sep 22, 2026, 11:21 AM UTC.