M1.6 earthquake 3km WSW of Blackhawk, CA

Magnitude

1.6 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Wed, Feb 24, 2021, 9:02 AM PST

UTC

2021-02-24 17:02:40 UTC

Depth

7.1 km (4.4 mi), shallow

Epicenter

37.806° N, 121.936° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.23

Depth from

From location

Station coverage gap

67°

Stations used

16

• Blackhawk, CaliforniaPopulation 9,354. Forecast3 kmSW
• San Ramon, CaliforniaPopulation 76,134. Forecast5 kmNE
• Hayward, CaliforniaPopulation 158,289. Forecast20 kmNE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast534 kmNW

After

1. 1.96km SSW of Gilroy, CAWed, Feb 24, 4:07 PM PST · 2047 days ago · 4 km deep · 99 km away
2. 1.66km ESE of Fairview, CAThu, Feb 25, 11:37 PM PST · 2046 days ago · 10 km deep · 16 km away
3. 2.47km N of Aromas, CASun, Feb 28, 8:31 AM PST · 2043 days ago · 5 km deep · 98 km away · felt by 4
4. 1.85km ESE of St. Helena, CAMon, Mar 1, 9:53 AM PST · 2042 days ago · 12 km deep · 86 km away · felt by 1
5. 2.015km E of Seven Trees, CATue, Mar 2, 1:49 PM PST · 2041 days ago · 6 km deep · 61 km away
6. 1.96km ESE of St. Helena, CATue, Mar 2, 4:47 PM PST · 2041 days ago · 7 km deep · 86 km away
7. 2.110km SE of Sunol, CATue, Mar 2, 8:23 PM PST · 2041 days ago · 3 km deep · 32 km away
8. 3.16km WSW of St. Helena, CAThu, Mar 4, 7:53 AM PST · 2039 days ago · 11 km deep · 91 km away · felt by 234
9. 1.93km ESE of Berkeley, CAFri, Mar 5, 2:57 PM PST · 2038 days ago · 7 km deep · 28 km away · felt by 5
10. 1.76km SSW of Yountville, CASun, Mar 14, 10:55 AM PDT · 2029 days ago · 7 km deep · 72 km away · felt by 1
11. 1.62km E of Vallejo, CASun, Mar 14, 11:24 AM PDT · 2029 days ago · 7 km deep · 42 km away
12. 1.78km E of Gilroy, CATue, Mar 16, 7:04 PM PDT · 2027 days ago · 5 km deep · 97 km away
13. 1.616km N of Morgan Hill, CAWed, Mar 17, 3:28 PM PDT · 2026 days ago · 7 km deep · 64 km away
14. 2.710km WNW of American Canyon, CAThu, Mar 18, 7:01 AM PDT · 2025 days ago · 9 km deep · 59 km away · felt by 20
15. 1.65km S of Yountville, CASun, Mar 21, 8:17 AM PDT · 2022 days ago · 5 km deep · 71 km away
16. 2.515km N of Morgan Hill, CASun, Mar 21, 1:44 PM PDT · 2022 days ago · 6 km deep · 66 km away · felt by 7
17. 2.39km E of Gilroy, CASun, Mar 21, 11:09 PM PDT · 2022 days ago · 8 km deep · 99 km away · felt by 1
18. 2.010km E of Gilroy, CAMon, Mar 22, 12:55 AM PDT · 2022 days ago · 8 km deep · 99 km away
19. 2.110km E of Gilroy, CAMon, Mar 22, 1:16 AM PDT · 2022 days ago · 8 km deep · 99 km away · felt by 1
20. 1.810km E of Gilroy, CAMon, Mar 22, 9:12 AM PDT · 2021 days ago · 9 km deep · 99 km away · felt by 1
21. 1.710km E of Gilroy, CAMon, Mar 22, 1:50 PM PDT · 2021 days ago · 9 km deep · 99 km away
22. 2.810km ENE of Yountville, CATue, Mar 23, 2:15 PM PDT · 2020 days ago · 11 km deep · 74 km away · felt by 42
23. 1.811km ENE of Yountville, CATue, Mar 23, 3:43 PM PDT · 2020 days ago · 7 km deep · 74 km away · felt by 1
24. 1.710km SE of Sunol, CATue, Mar 23, 5:33 PM PDT · 2020 days ago · 5 km deep · 32 km away
25. 2.515km ENE of Alum Rock, CAWed, Mar 24, 3:36 AM PDT · 2019 days ago · 5 km deep · 49 km away · felt by 2
26. 3.210km E of Gilroy, CAWed, Mar 24, 4:07 PM PDT · 2019 days ago · 8 km deep · 99 km away · felt by 34
27. 1.910km E of Gilroy, CAThu, Mar 25, 12:27 AM PDT · 2019 days ago · 9 km deep · 99 km away
28. 2.67km E of Alum Rock, CAMon, Mar 29, 10:43 PM PDT · 2014 days ago · 8 km deep · 51 km away · felt by 90
29. 1.99km NNE of Alum Rock, CATue, Mar 30, 4:13 PM PDT · 2013 days ago · 6 km deep · 43 km away
30. 2.14km WSW of Pleasanton, CAThu, Apr 1, 9:50 AM PDT · 2011 days ago · 8 km deep · 18 km away
31. 1.610km NE of Milpitas, CAFri, Apr 2, 1:51 AM PDT · 2011 days ago · 5 km deep · 36 km away
32. 2.420km SE of Livermore, CAMon, Apr 5, 6:44 PM PDT · 2007 days ago · 2 km deep · 40 km away
33. 2.40km W of Pleasant Hill, CAWed, Apr 7, 6:45 AM PDT · 2005 days ago · 11 km deep · 20 km away · felt by 54
34. 2.56km S of Calistoga, CAWed, Apr 7, 8:17 AM PDT · 2005 days ago · 9 km deep · 98 km away · felt by 10
35. 1.81km SW of East Richmond Heights, CAWed, Apr 7, 11:32 AM PDT · 2005 days ago · 4 km deep · 37 km away
36. 1.72km WNW of Newman, CAWed, Apr 7, 4:46 PM PDT · 2005 days ago · 1 km deep · 96 km away
37. 2.914km SE of Livermore, CASat, Apr 10, 4:50 AM PDT · 2002 days ago · 4 km deep · 34 km away · felt by 70
38. 3.36km S of Calistoga, CASat, Apr 10, 7:13 AM PDT · 2002 days ago · 9 km deep · 98 km away · felt by 262
39. 2.314km SE of Livermore, CASun, Apr 11, 2:02 AM PDT · 2001 days ago · 4 km deep · 34 km away · felt by 2
40. 2.09km ENE of Milpitas, CASun, Apr 11, 2:10 PM PDT · 2001 days ago · 7 km deep · 39 km away
41. 2.13km WNW of Pacifica, CASun, Apr 11, 8:47 PM PDT · 2001 days ago · 9 km deep · 55 km away · felt by 13
42. 1.59km ENE of Milpitas, CAWed, Apr 14, 11:50 PM PDT · 1998 days ago · 7 km deep · 39 km away
43. 2.214km SE of Livermore, CAThu, Apr 15, 1:19 AM PDT · 1998 days ago · 4 km deep · 34 km away · felt by 2
44. 1.810km ENE of Morgan Hill, CAFri, Apr 16, 4:11 AM PDT · 1996 days ago · 6 km deep · 79 km away
45. 1.66km SSW of Calistoga, CASat, Apr 17, 5:44 PM PDT · 1995 days ago · 9 km deep · 99 km away
46. 1.63km NNW of Angwin, CASun, Apr 18, 9:47 AM PDT · 1994 days ago · 0 km deep · 100 km away
47. 1.95km ESE of Interlaken, CASun, Apr 18, 3:04 PM PDT · 1994 days ago · 10 km deep · 99 km away
48. 2.36km WSW of Colma, CAMon, Apr 19, 7:54 AM PDT · 1993 days ago · 8 km deep · 54 km away · felt by 13
49. 1.66km SSW of Calistoga, CATue, Apr 20, 7:42 AM PDT · 1992 days ago · 6 km deep · 100 km away
50. 1.83km S of Concord, CAWed, Apr 21, 8:38 PM PDT · 1991 days ago · 10 km deep · 17 km away
51. 1.910km SSE of Elmira, CAWed, Apr 21, 11:39 PM PDT · 1991 days ago · 23 km deep · 52 km away
52. 1.64km W of Kenwood, CAThu, Apr 22, 12:49 PM PDT · 1990 days ago · 7 km deep · 88 km away
53. 1.83km WSW of Oakley, CASat, Apr 24, 9:57 PM PDT · 1988 days ago · 17 km deep · 26 km away
54. 3.615km N of Morgan Hill, CASat, Apr 24, 9:59 PM PDT · 1988 days ago · 8 km deep · 65 km away · felt by 2,036
55. 2.515km N of Morgan Hill, CASat, Apr 24, 10:00 PM PDT · 1988 days ago · 7 km deep · 65 km away · felt by 52

Before

1. 2.113km E of Angwin, CAWed, Feb 24, 3:12 AM PST · 2047 days ago · 8 km deep · 90 km away · felt by 1
2. 2.013km E of Angwin, CAWed, Feb 24, 3:07 AM PST · 2047 days ago · 7 km deep · 90 km away
3. 2.310km ENE of Morgan Hill, CAWed, Feb 24, 2:44 AM PST · 2047 days ago · 5 km deep · 79 km away
4. 1.62km N of San Ramon, CATue, Feb 23, 8:44 AM PST · 2048 days ago · 7 km deep · 4 km away
5. 1.96km E of Milpitas, CAMon, Feb 22, 9:06 PM PST · 2049 days ago · 0 km deep · 43 km away · felt by 14
6. 2.32km SE of Danville, CASun, Feb 21, 9:41 PM PST · 2050 days ago · 8 km deep · 4 km away · felt by 43
7. 3.89km ENE of Gilroy, CASun, Feb 21, 5:38 PM PST · 2050 days ago · 6 km deep · 94 km away · felt by 1,014
8. 1.82km ESE of Berkeley, CASun, Feb 21, 8:19 AM PST · 2050 days ago · 5 km deep · 29 km away · felt by 2
9. 1.65km E of Alum Rock, CASun, Feb 21, 8:11 AM PST · 2050 days ago · 2 km deep · 51 km away
10. 1.68km NE of Interlaken, CASat, Feb 20, 4:31 PM PST · 2051 days ago · 5 km deep · 93 km away
11. 2.111km NE of Milpitas, CAThu, Feb 18, 7:44 PM PST · 2053 days ago · 5 km deep · 36 km away
12. 2.61km ENE of Union City, CAWed, Feb 17, 1:13 AM PST · 2054 days ago · 5 km deep · 24 km away · felt by 326
13. 1.76km SW of Gilroy, CATue, Feb 16, 9:58 PM PST · 2055 days ago · 6 km deep · 97 km away · felt by 1
14. 1.916km E of Seven Trees, CATue, Feb 16, 1:32 AM PST · 2055 days ago · 4 km deep · 63 km away
15. 2.23km SW of Green Valley, CASun, Feb 14, 4:03 PM PST · 2057 days ago · 11 km deep · 52 km away
16. 1.68km ESE of Fremont, CASun, Feb 14, 4:48 AM PST · 2057 days ago · 6 km deep · 31 km away
17. 1.84km NE of Pleasanton, CATue, Feb 9, 7:55 PM PST · 2062 days ago · 12 km deep · 16 km away
18. 2.78km ESE of Fremont, CATue, Feb 9, 10:58 AM PST · 2062 days ago · 7 km deep · 31 km away · felt by 145
19. 1.96km N of Alum Rock, CATue, Feb 9, 4:09 AM PST · 2062 days ago · 0 km deep · 45 km away · felt by 11
20. 2.00km SE of Pleasant Hill, CAMon, Feb 8, 11:16 AM PST · 2063 days ago · 9 km deep · 19 km away · felt by 4

From the USGS Earthquake Hazards Program and its partner networks, event nc73527256. Read Sat, Oct 3, 2026, 8:29 PM UTC.