M1.7 earthquake 3 km NW of Hercules, CA

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, May 16, 2026, 5:51 PM PDT

UTC

2026-05-17 00:51:01 UTC

Depth

7.7 km (4.8 mi), shallow

Epicenter

38.035° N, 122.309° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.30

Depth from

From location

Station coverage gap

36°

Stations used

49

• Hercules, CaliforniaPopulation 25,314. Forecast3 kmNW
• Vallejo, CaliforniaPopulation 121,692. Forecast9 kmSSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast574 kmNW

After

1. 1.52 km NE of The Geysers, CASat, May 16, 10:57 PM PDT · 140 days ago · 1 km deep · 92 km away
2. 1.63 km NW of Hercules, CASun, May 17, 1:27 AM PDT · 140 days ago · 8 km deep · 0 km away
3. 1.62 km SE of East Richmond Heights, CASun, May 17, 9:25 AM PDT · 140 days ago · 9 km deep · 11 km away
4. 1.85 km S of Pittsburg, CAMon, May 18, 5:11 AM PDT · 139 days ago · 18 km deep · 38 km away · felt by 1
5. 1.53 km NE of The Geysers, CAWed, May 20, 3:05 AM PDT · 137 days ago · 1 km deep · 93 km away
6. 1.66 km WNW of Cobb, CAWed, May 20, 11:52 AM PDT · 137 days ago · 2 km deep · 98 km away
7. 1.83 km NW of The Geysers, CAWed, May 20, 5:10 PM PDT · 137 days ago · 3 km deep · 94 km away
8. 1.63 km WNW of Anderson Springs, CAThu, May 21, 6:42 PM PDT · 135 days ago · 1 km deep · 91 km away
9. 1.58 km WNW of Cobb, CAFri, May 22, 12:39 AM PDT · 135 days ago · 2 km deep · 99 km away
10. 1.60 km ENE of The Geysers, CAFri, May 22, 1:20 AM PDT · 135 days ago · 1 km deep · 91 km away
11. 2.013 km NNE of Angwin, CASat, May 23, 7:48 AM PDT · 134 days ago · 7 km deep · 73 km away
12. 1.62 km N of The Geysers, CASat, May 23, 4:26 PM PDT · 134 days ago · 2 km deep · 93 km away
13. 1.54 km W of Cobb, CASun, May 24, 3:06 AM PDT · 133 days ago · 2 km deep · 96 km away
14. 1.914 km NNE of Angwin, CASun, May 24, 4:49 AM PDT · 133 days ago · 10 km deep · 73 km away
15. 1.55 km NW of The Geysers, CASun, May 24, 7:09 PM PDT · 132 days ago · 3 km deep · 96 km away
16. 1.64 km WNW of The Geysers, CAMon, May 25, 6:52 AM PDT · 132 days ago · 1 km deep · 95 km away
17. 1.54 km NNW of Pittsburg, CATue, May 26, 3:17 AM PDT · 131 days ago · 24 km deep · 36 km away
18. 2.04 km NE of San Leandro, CATue, May 26, 6:24 PM PDT · 130 days ago · 11 km deep · 36 km away · felt by 1
19. 2.23 km SW of Alamo, CATue, May 26, 7:34 PM PDT · 130 days ago · 13 km deep · 31 km away · felt by 2
20. 2.03 km WSW of Alamo, CATue, May 26, 9:11 PM PDT · 130 days ago · 13 km deep · 31 km away
21. 2.13 km WSW of Alamo, CATue, May 26, 9:24 PM PDT · 130 days ago · 13 km deep · 31 km away
22. 1.53 km WSW of Alamo, CATue, May 26, 9:27 PM PDT · 130 days ago · 12 km deep · 31 km away
23. 1.73 km WSW of Alamo, CATue, May 26, 9:51 PM PDT · 130 days ago · 12 km deep · 31 km away
24. 2.13 km SW of Alamo, CAWed, May 27, 1:23 AM PDT · 130 days ago · 13 km deep · 31 km away · felt by 1
25. 1.64 km WNW of The Geysers, CAWed, May 27, 1:41 AM PDT · 130 days ago · 3 km deep · 95 km away
26. 1.64 km WNW of The Geysers, CAWed, May 27, 1:41 AM PDT · 130 days ago · 3 km deep · 95 km away
27. 1.69 km WNW of Calistoga, CAWed, May 27, 2:03 AM PDT · 130 days ago · 7 km deep · 70 km away
28. 1.76 km WNW of Cobb, CAWed, May 27, 5:13 AM PDT · 130 days ago · 2 km deep · 98 km away
29. 1.64 km NE of San Leandro, CAWed, May 27, 6:01 AM PDT · 130 days ago · 11 km deep · 36 km away
30. 1.87 km NW of The Geysers, CAWed, May 27, 2:48 PM PDT · 130 days ago · 3 km deep · 98 km away
31. 1.911 km N of Healdsburg, CAWed, May 27, 3:15 PM PDT · 130 days ago · 7 km deep · 90 km away
32. 1.99 km WNW of The Geysers, CAWed, May 27, 6:55 PM PDT · 129 days ago · 2 km deep · 99 km away
33. 1.62 km NW of The Geysers, CAWed, May 27, 9:06 PM PDT · 129 days ago · 3 km deep · 93 km away
34. 1.63 km NNW of The Geysers, CAWed, May 27, 10:15 PM PDT · 129 days ago · 3 km deep · 95 km away
35. 2.35 km WNW of The Geysers, CAThu, May 28, 7:52 AM PDT · 129 days ago · 2 km deep · 96 km away
36. 1.98 km W of Cobb, CAThu, May 28, 8:27 AM PDT · 129 days ago · 2 km deep · 99 km away
37. 1.54 km W of Cobb, CAThu, May 28, 9:24 AM PDT · 129 days ago · 2 km deep · 96 km away
38. 1.87 km NW of The Geysers, CAFri, May 29, 5:01 AM PDT · 128 days ago · 3 km deep · 98 km away
39. 1.83 km WSW of Anderson Springs, CAFri, May 29, 2:50 PM PDT · 128 days ago · 0 km deep · 89 km away
40. 2.06 km W of Cobb, CAFri, May 29, 3:13 PM PDT · 128 days ago · 2 km deep · 98 km away
41. 1.77 km NW of The Geysers, CASun, May 31, 1:00 AM PDT · 126 days ago · 2 km deep · 98 km away
42. 2.421 km WNW of Boulder Creek, CASun, May 31, 1:09 AM PDT · 126 days ago · 13 km deep · 96 km away · felt by 3
43. 1.62 km WSW of Anderson Springs, CASun, May 31, 3:09 AM PDT · 126 days ago · 2 km deep · 89 km away
44. 2.16 km NW of The Geysers, CASun, May 31, 6:41 AM PDT · 126 days ago · 3 km deep · 97 km away
45. 1.66 km WNW of Cobb, CASun, May 31, 11:10 AM PDT · 126 days ago · 2 km deep · 99 km away
46. 2.510 km WNW of The Geysers, CASun, May 31, 1:33 PM PDT · 126 days ago · 3 km deep · 99 km away · felt by 2
47. 1.97 km NW of The Geysers, CASun, May 31, 1:59 PM PDT · 126 days ago · 3 km deep · 98 km away
48. 1.612 km ESE of Alum Rock, CASun, May 31, 8:08 PM PDT · 125 days ago · 8 km deep · 95 km away
49. 1.87 km NW of The Geysers, CASun, May 31, 11:17 PM PDT · 125 days ago · 2 km deep · 98 km away
50. 1.62 km N of The Geysers, CASun, May 31, 11:19 PM PDT · 125 days ago · 0 km deep · 93 km away
51. 1.58 km W of Cobb, CAMon, Jun 1, 12:57 AM PDT · 125 days ago · 2 km deep · 99 km away
52. 1.86 km WNW of The Geysers, CAMon, Jun 1, 4:23 AM PDT · 125 days ago · 3 km deep · 97 km away
53. 2.22 km N of The Geysers, CAMon, Jun 1, 5:01 PM PDT · 125 days ago · 0 km deep · 93 km away
54. 1.82 km N of The Geysers, CAMon, Jun 1, 5:01 PM PDT · 125 days ago · -1 km deep · 93 km away
55. 1.89 km WNW of The Geysers, CAMon, Jun 1, 9:39 PM PDT · 124 days ago · 2 km deep · 99 km away
56. 2.01 km ESE of The Geysers, CAMon, Jun 1, 11:08 PM PDT · 124 days ago · 2 km deep · 90 km away · felt by 1
57. 1.89 km ESE of Cloverdale, CATue, Jun 2, 1:17 AM PDT · 124 days ago · 6 km deep · 97 km away
58. 1.59 km NW of The Geysers, CATue, Jun 2, 5:16 AM PDT · 124 days ago · 2 km deep · 99 km away
59. 1.82 km WNW of The Geysers, CATue, Jun 2, 5:23 AM PDT · 124 days ago · 0 km deep · 93 km away
60. 3.67 km ESE of Cloverdale, CATue, Jun 2, 9:44 AM PDT · 124 days ago · 5 km deep · 100 km away · felt by 80

The first 60 of 190.

Before

1. 2.13 km SE of The Geysers, CAFri, May 15, 2:41 PM PDT · 142 days ago · 2 km deep · 88 km away
2. 1.65 km ESE of San Ramon, CAFri, May 15, 6:43 AM PDT · 142 days ago · 10 km deep · 45 km away
3. 2.17 km NW of The Geysers, CAFri, May 15, 2:23 AM PDT · 142 days ago · 2 km deep · 97 km away
4. 1.67 km WNW of Cobb, CAFri, May 15, 1:32 AM PDT · 142 days ago · 2 km deep · 99 km away
5. 1.83 km ENE of The Geysers, CAThu, May 14, 10:35 PM PDT · 142 days ago · 2 km deep · 92 km away
6. 2.04 km W of Cobb, CAThu, May 14, 10:10 PM PDT · 142 days ago · 2 km deep · 96 km away
7. 2.74 km W of Cobb, CAThu, May 14, 10:09 PM PDT · 142 days ago · 2 km deep · 96 km away · felt by 1
8. 1.66 km WNW of Cobb, CAWed, May 13, 3:57 AM PDT · 144 days ago · 2 km deep · 98 km away
9. 1.79 km NW of The Geysers, CAWed, May 13, 12:46 AM PDT · 144 days ago · 2 km deep · 99 km away
10. 1.67 km NW of The Geysers, CATue, May 12, 11:44 PM PDT · 144 days ago · 3 km deep · 98 km away
11. 2.92 km NNE of Middletown, CATue, May 12, 12:38 PM PDT · 145 days ago · 5 km deep · 86 km away · felt by 11
12. 1.72 km SSE of Pacifica, CATue, May 12, 11:53 AM PDT · 145 days ago · 10 km deep · 51 km away
13. 1.59 km WNW of The Geysers, CATue, May 12, 6:40 AM PDT · 145 days ago · 2 km deep · 99 km away
14. 1.55 km NNW of The Geysers, CAMon, May 11, 10:03 PM PDT · 145 days ago · 1 km deep · 97 km away
15. 2.08 km NW of The Geysers, CAMon, May 11, 10:40 AM PDT · 146 days ago · 2 km deep · 99 km away
16. 1.68 km NW of The Geysers, CAMon, May 11, 12:29 AM PDT · 146 days ago · 2 km deep · 99 km away
17. 2.72 km ESE of Pinole, CASun, May 10, 3:55 PM PDT · 147 days ago · 6 km deep · 5 km away · felt by 172
18. 1.82 km SE of Pacifica, CASun, May 10, 2:30 PM PDT · 147 days ago · 10 km deep · 51 km away
19. 2.49 km WNW of The Geysers, CASun, May 10, 1:00 PM PDT · 147 days ago · 2 km deep · 99 km away
20. 2.42 km E of The Geysers, CASun, May 10, 11:31 AM PDT · 147 days ago · 1 km deep · 91 km away · felt by 2

From the USGS Earthquake Hazards Program and its partner networks, event nc75361521. Read Sun, Oct 4, 2026, 12:25 PM UTC.