M1.7 earthquake 7km W of Cobb, CA

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Apr 17, 2021, 1:42 PM PDT

UTC

2021-04-17 20:42:49 UTC

Depth

2.1 km (1.3 mi), shallow

Epicenter

38.834° N, 122.805° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.2 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

32°

Stations used

44

• Cobb, CaliforniaPopulation 1,778. Forecast7 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast21 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast44 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast670 kmNW

After

1. 1.66km SSW of Calistoga, CASat, Apr 17, 5:44 PM PDT · 1996 days ago · 9 km deep · 38 km away
2. 1.64km W of Cobb, CASun, Apr 18, 1:40 AM PDT · 1996 days ago · 2 km deep · 4 km away
3. 1.97km NW of The Geysers, CASun, Apr 18, 1:41 AM PDT · 1996 days ago · 2 km deep · 3 km away · felt by 1
4. 1.56km E of Redwood Valley, CASun, Apr 18, 3:25 AM PDT · 1996 days ago · 6 km deep · 55 km away
5. 1.63km NNW of Angwin, CASun, Apr 18, 9:47 AM PDT · 1995 days ago · 0 km deep · 39 km away
6. 1.78km ESE of Willits, CASun, Apr 18, 12:25 PM PDT · 1995 days ago · -1 km deep · 72 km away
7. 2.87km NW of The Geysers, CASun, Apr 18, 7:21 PM PDT · 1995 days ago · 2 km deep · 1 km away · felt by 5
8. 1.79km WNW of Cobb, CASun, Apr 18, 10:43 PM PDT · 1995 days ago · 2 km deep · 2 km away
9. 2.04km WNW of Cobb, CAMon, Apr 19, 2:33 AM PDT · 1995 days ago · 2 km deep · 3 km away · felt by 1
10. 4.03km SW of Anderson Springs, CAMon, Apr 19, 11:50 AM PDT · 1994 days ago · 3 km deep · 11 km away · felt by 780
11. 2.33km WSW of Anderson Springs, CAMon, Apr 19, 11:51 AM PDT · 1994 days ago · 1 km deep · 10 km away
12. 1.73km SE of The Geysers, CAMon, Apr 19, 11:52 AM PDT · 1994 days ago · 1 km deep · 11 km away
13. 1.63km S of Anderson Springs, CAMon, Apr 19, 11:54 AM PDT · 1994 days ago · 1 km deep · 13 km away
14. 1.621km ENE of Hidden Valley Lake, CAMon, Apr 19, 2:38 PM PDT · 1994 days ago · 19 km deep · 42 km away
15. 1.816km SE of Lake Pillsbury, CAMon, Apr 19, 8:18 PM PDT · 1994 days ago · 5 km deep · 54 km away
16. 2.012km NNE of Brooktrails, CATue, Apr 20, 12:59 AM PDT · 1994 days ago · 9 km deep · 91 km away
17. 1.66km SSW of Calistoga, CATue, Apr 20, 7:42 AM PDT · 1993 days ago · 6 km deep · 38 km away
18. 1.87km W of Cobb, CATue, Apr 20, 11:41 AM PDT · 1993 days ago · 2 km deep · 0 km away
19. 1.69km W of North Lakeport, CATue, Apr 20, 12:59 PM PDT · 1993 days ago · 0 km deep · 34 km away
20. 2.37km W of Cobb, CATue, Apr 20, 2:40 PM PDT · 1993 days ago · 2 km deep · 0 km away
21. 1.87km NW of The Geysers, CATue, Apr 20, 4:29 PM PDT · 1993 days ago · 2 km deep · 2 km away
22. 1.83km SSE of The Geysers, CATue, Apr 20, 7:10 PM PDT · 1993 days ago · 1 km deep · 10 km away
23. 1.69km WSW of Cloverdale, CAWed, Apr 21, 4:30 AM PDT · 1993 days ago · 7 km deep · 27 km away
24. 2.16km NW of The Geysers, CAThu, Apr 22, 12:04 AM PDT · 1992 days ago · 1 km deep · 3 km away
25. 2.56km NW of The Geysers, CAThu, Apr 22, 12:05 AM PDT · 1992 days ago · 1 km deep · 3 km away · felt by 2
26. 2.42km NE of Anderson Springs, CAThu, Apr 22, 1:00 AM PDT · 1992 days ago · 1 km deep · 13 km away
27. 1.66km WNW of Cobb, CAThu, Apr 22, 12:33 PM PDT · 1991 days ago · 2 km deep · 2 km away
28. 1.64km W of Kenwood, CAThu, Apr 22, 12:49 PM PDT · 1991 days ago · 7 km deep · 51 km away
29. 2.81km W of Anderson Springs, CAThu, Apr 22, 5:08 PM PDT · 1991 days ago · 3 km deep · 11 km away · felt by 6
30. 3.915km NNW of Lake Pillsbury, CAFri, Apr 23, 4:18 AM PDT · 1991 days ago · 7 km deep · 79 km away · felt by 14
31. 1.87km NW of The Geysers, CAFri, Apr 23, 5:44 AM PDT · 1990 days ago · 1 km deep · 1 km away
32. 1.56km WNW of The Geysers, CAFri, Apr 23, 9:26 AM PDT · 1990 days ago · 3 km deep · 3 km away
33. 1.86km NNW of The Geysers, CAFri, Apr 23, 10:11 AM PDT · 1990 days ago · 3 km deep · 1 km away
34. 1.716km NE of Willits, CAFri, Apr 23, 4:47 PM PDT · 1990 days ago · 6 km deep · 81 km away
35. 2.63km WSW of Anderson Springs, CAFri, Apr 23, 9:21 PM PDT · 1990 days ago · 2 km deep · 10 km away
36. 1.61km W of Lake Pillsbury, CASat, Apr 24, 1:52 PM PDT · 1989 days ago · 2 km deep · 65 km away
37. 1.78km NW of The Geysers, CASat, Apr 24, 5:15 PM PDT · 1989 days ago · 2 km deep · 1 km away
38. 1.812km W of Lakeport, CASat, Apr 24, 10:55 PM PDT · 1989 days ago · 4 km deep · 30 km away
39. 2.31km NNW of The Geysers, CASun, Apr 25, 1:26 AM PDT · 1989 days ago · 3 km deep · 6 km away · felt by 1
40. 1.75km NNW of Lake Pillsbury, CASun, Apr 25, 2:07 AM PDT · 1989 days ago · 6 km deep · 70 km away
41. 1.76km NW of The Geysers, CASun, Apr 25, 10:00 AM PDT · 1988 days ago · 3 km deep · 1 km away
42. 3.12km SSW of Anderson Springs, CASun, Apr 25, 9:05 PM PDT · 1988 days ago · 0 km deep · 13 km away · felt by 18
43. 1.66km NW of The Geysers, CAMon, Apr 26, 4:12 AM PDT · 1988 days ago · 3 km deep · 1 km away
44. 2.05km NNW of The Geysers, CATue, Apr 27, 7:04 AM PDT · 1986 days ago · 2 km deep · 3 km away
45. 1.54km SW of Glen Ellen, CATue, Apr 27, 11:18 PM PDT · 1986 days ago · 5 km deep · 59 km away
46. 1.87km WNW of The Geysers, CAWed, Apr 28, 3:08 AM PDT · 1986 days ago · 3 km deep · 3 km away
47. 1.510km ENE of Clearlake, CAWed, Apr 28, 7:17 AM PDT · 1985 days ago · 3 km deep · 31 km away
48. 1.68km SE of Cloverdale, CAWed, Apr 28, 9:08 AM PDT · 1985 days ago · 6 km deep · 14 km away
49. 1.810km WNW of The Geysers, CAWed, Apr 28, 1:19 PM PDT · 1985 days ago · 3 km deep · 4 km away
50. 1.610km ESE of Willits, CAThu, Apr 29, 1:32 AM PDT · 1985 days ago · 6 km deep · 70 km away
51. 2.16km W of Yountville, CAThu, Apr 29, 2:36 AM PDT · 1985 days ago · 5 km deep · 57 km away
52. 2.74km NW of The Geysers, CAThu, Apr 29, 7:08 AM PDT · 1984 days ago · 3 km deep · 3 km away · felt by 1
53. 1.66km NW of The Geysers, CAThu, Apr 29, 9:15 PM PDT · 1984 days ago · 3 km deep · 1 km away
54. 1.65km NW of The Geysers, CAFri, Apr 30, 6:07 AM PDT · 1983 days ago · 3 km deep · 3 km away
55. 2.85km NW of The Geysers, CAFri, Apr 30, 7:59 AM PDT · 1983 days ago · 4 km deep · 3 km away · felt by 3
56. 1.62km ESE of The Geysers, CAFri, Apr 30, 11:00 PM PDT · 1983 days ago · 1 km deep · 9 km away
57. 1.63km WNW of Lower Lake, CASat, May 1, 11:39 AM PDT · 1982 days ago · 4 km deep · 17 km away
58. 1.71km NW of The Geysers, CASat, May 1, 5:22 PM PDT · 1982 days ago · 2 km deep · 6 km away
59. 2.110km NW of The Geysers, CASun, May 2, 6:38 PM PDT · 1981 days ago · 2 km deep · 3 km away
60. 2.17km NW of The Geysers, CASun, May 2, 11:35 PM PDT · 1981 days ago · 2 km deep · 2 km away

The first 60 of 199.

Before

1. 2.37km W of Cobb, CAFri, Apr 16, 9:54 PM PDT · 1997 days ago · 2 km deep · 1 km away
2. 1.98km NW of The Geysers, CAFri, Apr 16, 9:02 PM PDT · 1997 days ago · 2 km deep · 1 km away
3. 1.610km WNW of The Geysers, CAFri, Apr 16, 6:04 PM PDT · 1997 days ago · 3 km deep · 4 km away
4. 1.610km WNW of The Geysers, CAFri, Apr 16, 6:02 PM PDT · 1997 days ago · 3 km deep · 4 km away
5. 2.020km SW of Arbuckle, CAFri, Apr 16, 5:16 PM PDT · 1997 days ago · 12 km deep · 49 km away
6. 2.03km W of Anderson Springs, CAFri, Apr 16, 2:36 AM PDT · 1998 days ago · 2 km deep · 9 km away
7. 2.72km W of Anderson Springs, CAFri, Apr 16, 2:35 AM PDT · 1998 days ago · 2 km deep · 10 km away · felt by 7
8. 1.62km NW of The Geysers, CAThu, Apr 15, 11:31 PM PDT · 1998 days ago · 2 km deep · 6 km away
9. 1.62km N of The Geysers, CAThu, Apr 15, 8:39 PM PDT · 1998 days ago · 1 km deep · 6 km away
10. 1.63km NW of The Geysers, CAThu, Apr 15, 8:24 PM PDT · 1998 days ago · 1 km deep · 4 km away
11. 1.76km NNW of The Geysers, CAThu, Apr 15, 8:15 PM PDT · 1998 days ago · 3 km deep · 2 km away
12. 1.69km ENE of Clearlake, CAThu, Apr 15, 5:02 PM PDT · 1998 days ago · -1 km deep · 29 km away
13. 1.93km SW of Cobb, CAThu, Apr 15, 2:50 PM PDT · 1998 days ago · 1 km deep · 6 km away
14. 2.58km NW of The Geysers, CAThu, Apr 15, 6:39 AM PDT · 1998 days ago · 2 km deep · 1 km away · felt by 3
15. 2.06km NNW of The Geysers, CAWed, Apr 14, 9:34 PM PDT · 1999 days ago · 3 km deep · 2 km away
16. 1.86km WNW of The Geysers, CAWed, Apr 14, 8:11 PM PDT · 1999 days ago · 3 km deep · 4 km away
17. 1.97km NW of The Geysers, CATue, Apr 13, 9:15 AM PDT · 2000 days ago · 3 km deep · 2 km away
18. 2.411km WNW of The Geysers, CATue, Apr 13, 7:23 AM PDT · 2000 days ago · 3 km deep · 5 km away
19. 1.714km W of Lakeport, CAMon, Apr 12, 7:34 AM PDT · 2001 days ago · 2 km deep · 32 km away
20. 1.58km NNW of Redwood Valley, CAMon, Apr 12, 1:36 AM PDT · 2002 days ago · 7 km deep · 67 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc73550740. Read Sun, Oct 4, 2026, 11:49 PM UTC.