M1.6 earthquake 13km SSW of Ridgemark, CA

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Jan 20, 2021, 10:58 PM PST

UTC

2021-01-21 06:58:55 UTC

Depth

7.1 km (4.4 mi), shallow

Epicenter

36.714° N, 121.443° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.31

Depth from

From location

Station coverage gap

50°

Stations used

40

• Ridgemark, CaliforniaPopulation 3,016. Forecast13 kmSSW
• Hollister, CaliforniaPopulation 37,462. Forecast16 kmSSW
• Salinas, CaliforniaPopulation 157,380. Forecast19 kmENE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast414 kmNW

After

1. 1.93km S of Los Altos Hills, CAThu, Jan 21, 12:21 AM PST · 2083 days ago · 6 km deep · 94 km away · felt by 13
2. 1.910km NE of Pinnacles, CAThu, Jan 21, 2:29 PM PST · 2082 days ago · 7 km deep · 38 km away
3. 1.913km E of Tres Pinos, CAMon, Jan 25, 12:06 AM PST · 2079 days ago · 10 km deep · 25 km away
4. 1.723km NNE of San Ardo, CATue, Jan 26, 7:32 AM PST · 2078 days ago · 7 km deep · 83 km away
5. 1.616km S of Tres Pinos, CAWed, Jan 27, 3:29 AM PST · 2077 days ago · 6 km deep · 15 km away
6. 2.115km SSE of Tres Pinos, CAWed, Jan 27, 3:33 AM PST · 2077 days ago · 4 km deep · 17 km away · felt by 2
7. 1.92km NE of Pinnacles, CAThu, Jan 28, 12:18 PM PST · 2075 days ago · 9 km deep · 34 km away
8. 2.210km NW of Pinnacles, CAFri, Jan 29, 2:05 AM PST · 2075 days ago · 7 km deep · 24 km away
9. 1.616km S of Tres Pinos, CAFri, Jan 29, 1:51 PM PST · 2074 days ago · 6 km deep · 15 km away
10. 1.722km ENE of San Ardo, CASat, Jan 30, 2:01 AM PST · 2074 days ago · 4 km deep · 96 km away
11. 1.617km SE of Pinnacles, CASat, Jan 30, 9:59 AM PST · 2074 days ago · 6 km deep · 50 km away
12. 1.618km NE of Pinnacles, CASun, Jan 31, 12:29 AM PST · 2073 days ago · 15 km deep · 40 km away
13. 2.024km ENE of San Ardo, CASun, Jan 31, 8:31 AM PST · 2073 days ago · 7 km deep · 98 km away
14. 1.75km N of Aromas, CAMon, Feb 1, 6:46 PM PST · 2071 days ago · 6 km deep · 30 km away
15. 2.220km SE of Pinnacles, CAMon, Feb 1, 10:57 PM PST · 2071 days ago · 9 km deep · 53 km away · felt by 2
16. 1.710km NW of Pinnacles, CATue, Feb 2, 2:34 AM PST · 2071 days ago · 7 km deep · 25 km away
17. 1.912km ESE of Gilroy, CATue, Feb 2, 4:19 AM PST · 2071 days ago · 5 km deep · 27 km away
18. 2.415km NW of Pinnacles, CATue, Feb 2, 8:37 PM PST · 2070 days ago · 5 km deep · 19 km away · felt by 3
19. 1.79km NNW of Hollister, CAWed, Feb 3, 12:53 PM PST · 2069 days ago · 6 km deep · 23 km away
20. 1.616km S of Tres Pinos, CAWed, Feb 3, 2:40 PM PST · 2069 days ago · 7 km deep · 16 km away
21. 1.812km ESE of Gilroy, CAWed, Feb 3, 10:00 PM PST · 2069 days ago · 6 km deep · 27 km away
22. 1.912km ESE of Gilroy, CAThu, Feb 4, 9:19 AM PST · 2069 days ago · 6 km deep · 27 km away
23. 2.212km WSW of Saratoga, CAThu, Feb 4, 12:41 PM PST · 2068 days ago · 10 km deep · 86 km away · felt by 2
24. 2.412km SE of Pinnacles, CAFri, Feb 5, 5:03 AM PST · 2068 days ago · 8 km deep · 45 km away
25. 1.522km ENE of San Ardo, CAFri, Feb 5, 3:00 PM PST · 2067 days ago · 4 km deep · 96 km away
26. 1.86km NNW of Pinnacles, CAFri, Feb 5, 8:51 PM PST · 2067 days ago · 6 km deep · 29 km away
27. 1.610km SSW of Tres Pinos, CAFri, Feb 5, 8:58 PM PST · 2067 days ago · 2 km deep · 7 km away
28. 2.09km E of Alum Rock, CAFri, Feb 5, 10:58 PM PST · 2067 days ago · 9 km deep · 78 km away
29. 2.29km SSW of Tres Pinos, CASat, Feb 6, 12:00 AM PST · 2067 days ago · 1 km deep · 7 km away
30. 3.210km NE of Milpitas, CASun, Feb 7, 4:45 PM PST · 2065 days ago · 5 km deep · 94 km away · felt by 436
31. 1.810km NE of Milpitas, CASun, Feb 7, 4:52 PM PST · 2065 days ago · 4 km deep · 93 km away · felt by 2
32. 1.510km NE of Milpitas, CASun, Feb 7, 4:54 PM PST · 2065 days ago · 4 km deep · 93 km away · felt by 1
33. 1.610km NE of Milpitas, CASun, Feb 7, 8:20 PM PST · 2065 days ago · 4 km deep · 93 km away
34. 1.611km NE of Milpitas, CASun, Feb 7, 11:02 PM PST · 2065 days ago · 4 km deep · 94 km away
35. 2.011km NE of Milpitas, CAMon, Feb 8, 1:55 AM PST · 2065 days ago · 4 km deep · 93 km away
36. 2.18km ESE of Fremont, CAMon, Feb 8, 2:22 AM PST · 2065 days ago · 7 km deep · 99 km away · felt by 2
37. 2.26km ENE of Pinnacles, CAMon, Feb 8, 5:54 AM PST · 2065 days ago · 7 km deep · 37 km away
38. 1.813km NW of Pinnacles, CAMon, Feb 8, 8:11 PM PST · 2064 days ago · 4 km deep · 22 km away
39. 2.113km NW of Pinnacles, CAMon, Feb 8, 11:04 PM PST · 2064 days ago · 5 km deep · 22 km away · felt by 1
40. 2.513km E of New Idria, CAMon, Feb 8, 11:08 PM PST · 2064 days ago · 11 km deep · 87 km away · felt by 8
41. 1.96km N of Alum Rock, CATue, Feb 9, 4:09 AM PST · 2064 days ago · 0 km deep · 85 km away · felt by 11
42. 2.78km ESE of Fremont, CATue, Feb 9, 10:58 AM PST · 2063 days ago · 7 km deep · 99 km away · felt by 145
43. 1.918km W of New Idria, CAThu, Feb 11, 2:03 AM PST · 2062 days ago · 18 km deep · 61 km away
44. 1.75km NNW of Pinnacles, CAThu, Feb 11, 9:51 PM PST · 2061 days ago · 3 km deep · 30 km away
45. 3.06km NNW of Pinnacles, CAFri, Feb 12, 9:07 AM PST · 2061 days ago · 8 km deep · 29 km away · felt by 7
46. 2.16km NNW of Pinnacles, CAFri, Feb 12, 9:09 AM PST · 2061 days ago · 7 km deep · 28 km away
47. 1.68km ESE of Fremont, CASun, Feb 14, 4:48 AM PST · 2059 days ago · 6 km deep · 99 km away
48. 1.916km E of Seven Trees, CATue, Feb 16, 1:32 AM PST · 2057 days ago · 4 km deep · 67 km away
49. 1.58km NNW of Pinnacles, CATue, Feb 16, 12:47 PM PST · 2056 days ago · 9 km deep · 28 km away
50. 1.75km NNW of Pinnacles, CATue, Feb 16, 1:10 PM PST · 2056 days ago · 7 km deep · 29 km away
51. 1.76km SW of Gilroy, CATue, Feb 16, 9:58 PM PST · 2056 days ago · 6 km deep · 32 km away · felt by 1
52. 1.612km NNE of Pinnacles, CAWed, Feb 17, 10:18 AM PST · 2056 days ago · 6 km deep · 34 km away
53. 2.111km NE of Milpitas, CAThu, Feb 18, 7:44 PM PST · 2054 days ago · 5 km deep · 93 km away
54. 1.919km SSE of Lopez Point, CAFri, Feb 19, 2:11 AM PST · 2054 days ago · 10 km deep · 94 km away
55. 1.68km NE of Interlaken, CASat, Feb 20, 4:31 PM PST · 2052 days ago · 5 km deep · 38 km away
56. 2.01km NNE of Tres Pinos, CASun, Feb 21, 7:34 AM PST · 2052 days ago · 10 km deep · 15 km away
57. 1.65km E of Alum Rock, CASun, Feb 21, 8:11 AM PST · 2052 days ago · 2 km deep · 79 km away
58. 1.72km SE of Tres Pinos, CASun, Feb 21, 4:38 PM PST · 2051 days ago · 9 km deep · 14 km away · felt by 1
59. 1.57km SE of Pinnacles, CASun, Feb 21, 4:43 PM PST · 2051 days ago · 7 km deep · 40 km away
60. 3.89km ENE of Gilroy, CASun, Feb 21, 5:38 PM PST · 2051 days ago · 6 km deep · 37 km away · felt by 1,014

The first 60 of 133.

Before

1. 2.213km NW of Pinnacles, CAWed, Jan 20, 4:52 PM PST · 2083 days ago · 5 km deep · 21 km away
2. 1.511km ENE of Pinnacles, CAWed, Jan 20, 3:43 PM PST · 2083 days ago · 9 km deep · 42 km away
3. 1.96km S of Gilroy, CAWed, Jan 20, 3:36 PM PST · 2083 days ago · 4 km deep · 29 km away
4. 2.16km S of Gilroy, CAWed, Jan 20, 3:36 PM PST · 2083 days ago · 4 km deep · 30 km away
5. 1.85km SW of Gilroy, CAWed, Jan 20, 12:50 PM PST · 2083 days ago · 4 km deep · 32 km away
6. 1.86km E of Milpitas, CAWed, Jan 20, 10:07 AM PST · 2084 days ago · 2 km deep · 87 km away
7. 2.18km ENE of Alum Rock, CATue, Jan 19, 8:18 PM PST · 2084 days ago · 7 km deep · 80 km away
8. 1.83km ESE of Aromas, CATue, Jan 19, 8:03 PM PST · 2084 days ago · 7 km deep · 24 km away
9. 1.93km ESE of Aromas, CATue, Jan 19, 5:30 PM PST · 2084 days ago · 7 km deep · 24 km away
10. 2.216km NNE of Pinnacles, CATue, Jan 19, 7:14 AM PST · 2085 days ago · 7 km deep · 32 km away
11. 1.56km SW of Gilroy, CATue, Jan 19, 5:00 AM PST · 2085 days ago · 2 km deep · 31 km away
12. 1.811km ENE of Tres Pinos, CAMon, Jan 18, 9:55 PM PST · 2085 days ago · 8 km deep · 24 km away · felt by 3
13. 1.64km ESE of Aromas, CAMon, Jan 18, 5:27 PM PST · 2085 days ago · 6 km deep · 23 km away
14. 1.610km ESE of Alum Rock, CAMon, Jan 18, 2:45 PM PST · 2085 days ago · 2 km deep · 74 km away
15. 1.611km NW of Pinnacles, CAMon, Jan 18, 1:12 PM PST · 2085 days ago · 7 km deep · 23 km away
16. 1.52km ESE of Aromas, CAMon, Jan 18, 4:03 AM PST · 2086 days ago · 8 km deep · 24 km away
17. 2.22km S of Los Altos Hills, CAMon, Jan 18, 1:01 AM PST · 2086 days ago · 5 km deep · 95 km away · felt by 10
18. 1.611km NNE of Pinnacles, CASun, Jan 17, 11:10 PM PST · 2086 days ago · 9 km deep · 34 km away
19. 2.03km SSE of San Ardo, CASun, Jan 17, 5:33 AM PST · 2087 days ago · 8 km deep · 94 km away · felt by 1
20. 1.65km SE of Aromas, CASat, Jan 16, 8:22 PM PST · 2087 days ago · 6 km deep · 22 km away · felt by 9

From the USGS Earthquake Hazards Program and its partner networks, event nc73514220. Read Mon, Oct 5, 2026, 6:13 AM UTC.