M1.5 earthquake 12km WNW of Upper Lake, CA

Magnitude

1.5 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Sat, Apr 3, 2021, 2:52 AM PDT

UTC

2021-04-03 09:52:54 UTC

Depth

8.7 km (5.4 mi), shallow

Epicenter

39.199° N, 123.045° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.8 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

128°

Stations used

17

• Upper Lake, CaliforniaPopulation 1,052. Forecast12 kmWNW
• Ukiah, CaliforniaPopulation 15,917. Forecast15 kmENE
• Santa Rosa, CaliforniaPopulation 178,127. Forecast89 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast715 kmNW

After

1. 2.227km WSW of Rancho Tehama Reserve, CASun, Apr 4, 7:10 PM PDT · 2009 days ago · 9 km deep · 90 km away
2. 2.52km SSW of Cobb, CAMon, Apr 5, 9:42 AM PDT · 2008 days ago · 2 km deep · 51 km away · felt by 5
3. 1.65km WNW of The Geysers, CATue, Apr 6, 6:54 AM PDT · 2007 days ago · 3 km deep · 49 km away
4. 1.99km WNW of The Geysers, CATue, Apr 6, 9:58 AM PDT · 2007 days ago · 2 km deep · 46 km away
5. 1.82km N of Lake Pillsbury, CATue, Apr 6, 2:49 PM PDT · 2007 days ago · 7 km deep · 26 km away
6. 1.87km NW of The Geysers, CATue, Apr 6, 3:21 PM PDT · 2007 days ago · 2 km deep · 46 km away
7. 1.57km NW of The Geysers, CATue, Apr 6, 8:21 PM PDT · 2007 days ago · 2 km deep · 47 km away
8. 2.44km WNW of The Geysers, CAWed, Apr 7, 5:13 AM PDT · 2006 days ago · 3 km deep · 50 km away · felt by 2
9. 2.94km WNW of The Geysers, CAWed, Apr 7, 5:56 AM PDT · 2006 days ago · 4 km deep · 50 km away · felt by 15
10. 2.56km S of Calistoga, CAWed, Apr 7, 8:17 AM PDT · 2006 days ago · 9 km deep · 85 km away · felt by 10
11. 1.66km NNE of Windsor, CAWed, Apr 7, 1:57 PM PDT · 2006 days ago · 5 km deep · 71 km away
12. 1.56km NW of The Geysers, CAWed, Apr 7, 8:45 PM PDT · 2006 days ago · 2 km deep · 47 km away
13. 1.74km S of Redwood Valley, CAThu, Apr 8, 12:36 PM PDT · 2005 days ago · 5 km deep · 14 km away
14. 2.35km NW of The Geysers, CAThu, Apr 8, 1:33 PM PDT · 2005 days ago · 3 km deep · 49 km away · felt by 2
15. 1.62km SW of Cobb, CAThu, Apr 8, 7:38 PM PDT · 2005 days ago · 2 km deep · 51 km away
16. 1.512km N of Brooktrails, CAThu, Apr 8, 7:42 PM PDT · 2005 days ago · 8 km deep · 49 km away
17. 1.95km WNW of The Geysers, CAFri, Apr 9, 10:16 PM PDT · 2004 days ago · 3 km deep · 50 km away
18. 1.96km NW of The Geysers, CASat, Apr 10, 4:01 AM PDT · 2003 days ago · 3 km deep · 48 km away
19. 3.36km S of Calistoga, CASat, Apr 10, 7:13 AM PDT · 2003 days ago · 9 km deep · 85 km away · felt by 262
20. 2.07km W of Cobb, CASun, Apr 11, 12:49 AM PDT · 2003 days ago · 2 km deep · 46 km away · felt by 1
21. 2.67km NW of The Geysers, CASun, Apr 11, 3:03 PM PDT · 2002 days ago · 2 km deep · 46 km away
22. 1.97km NW of The Geysers, CASun, Apr 11, 3:16 PM PDT · 2002 days ago · 2 km deep · 46 km away
23. 2.47km NW of The Geysers, CASun, Apr 11, 3:57 PM PDT · 2002 days ago · 2 km deep · 46 km away · felt by 5
24. 1.88km NW of The Geysers, CASun, Apr 11, 9:30 PM PDT · 2002 days ago · 2 km deep · 46 km away
25. 1.97km NW of The Geysers, CASun, Apr 11, 10:29 PM PDT · 2002 days ago · 2 km deep · 47 km away
26. 1.96km WNW of The Geysers, CAMon, Apr 12, 1:08 AM PDT · 2002 days ago · 2 km deep · 48 km away · felt by 1
27. 1.58km NNW of Redwood Valley, CAMon, Apr 12, 1:36 AM PDT · 2001 days ago · 7 km deep · 22 km away
28. 1.714km W of Lakeport, CAMon, Apr 12, 7:34 AM PDT · 2001 days ago · 2 km deep · 20 km away
29. 2.411km WNW of The Geysers, CATue, Apr 13, 7:23 AM PDT · 2000 days ago · 3 km deep · 44 km away
30. 1.97km NW of The Geysers, CATue, Apr 13, 9:15 AM PDT · 2000 days ago · 3 km deep · 47 km away
31. 1.86km WNW of The Geysers, CAWed, Apr 14, 8:11 PM PDT · 1999 days ago · 3 km deep · 49 km away
32. 2.06km NNW of The Geysers, CAWed, Apr 14, 9:34 PM PDT · 1999 days ago · 3 km deep · 47 km away
33. 2.58km NW of The Geysers, CAThu, Apr 15, 6:39 AM PDT · 1998 days ago · 2 km deep · 46 km away · felt by 3
34. 1.93km SW of Cobb, CAThu, Apr 15, 2:50 PM PDT · 1998 days ago · 1 km deep · 51 km away
35. 1.69km ENE of Clearlake, CAThu, Apr 15, 5:02 PM PDT · 1998 days ago · -1 km deep · 51 km away
36. 1.76km NNW of The Geysers, CAThu, Apr 15, 8:15 PM PDT · 1998 days ago · 3 km deep · 47 km away
37. 1.63km NW of The Geysers, CAThu, Apr 15, 8:24 PM PDT · 1998 days ago · 1 km deep · 50 km away
38. 1.62km N of The Geysers, CAThu, Apr 15, 8:39 PM PDT · 1998 days ago · 1 km deep · 52 km away
39. 1.62km NW of The Geysers, CAThu, Apr 15, 11:31 PM PDT · 1998 days ago · 2 km deep · 52 km away
40. 2.72km W of Anderson Springs, CAFri, Apr 16, 2:35 AM PDT · 1997 days ago · 2 km deep · 55 km away · felt by 7
41. 2.03km W of Anderson Springs, CAFri, Apr 16, 2:36 AM PDT · 1997 days ago · 2 km deep · 55 km away
42. 2.020km SW of Arbuckle, CAFri, Apr 16, 5:16 PM PDT · 1997 days ago · 12 km deep · 75 km away
43. 1.610km WNW of The Geysers, CAFri, Apr 16, 6:02 PM PDT · 1997 days ago · 3 km deep · 45 km away
44. 1.610km WNW of The Geysers, CAFri, Apr 16, 6:04 PM PDT · 1997 days ago · 3 km deep · 45 km away
45. 1.98km NW of The Geysers, CAFri, Apr 16, 9:02 PM PDT · 1997 days ago · 2 km deep · 45 km away
46. 2.37km W of Cobb, CAFri, Apr 16, 9:54 PM PDT · 1997 days ago · 2 km deep · 46 km away
47. 1.77km W of Cobb, CASat, Apr 17, 1:42 PM PDT · 1996 days ago · 2 km deep · 46 km away
48. 1.66km SSW of Calistoga, CASat, Apr 17, 5:44 PM PDT · 1996 days ago · 9 km deep · 84 km away
49. 1.54km ESE of Laytonville, CASat, Apr 17, 5:48 PM PDT · 1996 days ago · 9 km deep · 63 km away
50. 1.64km W of Cobb, CASun, Apr 18, 1:40 AM PDT · 1995 days ago · 2 km deep · 49 km away
51. 1.97km NW of The Geysers, CASun, Apr 18, 1:41 AM PDT · 1995 days ago · 2 km deep · 47 km away · felt by 1
52. 1.56km E of Redwood Valley, CASun, Apr 18, 3:25 AM PDT · 1995 days ago · 6 km deep · 10 km away
53. 1.63km NNW of Angwin, CASun, Apr 18, 9:47 AM PDT · 1995 days ago · 0 km deep · 83 km away
54. 1.78km ESE of Willits, CASun, Apr 18, 12:25 PM PDT · 1995 days ago · -1 km deep · 27 km away
55. 2.87km NW of The Geysers, CASun, Apr 18, 7:21 PM PDT · 1995 days ago · 2 km deep · 46 km away · felt by 5
56. 1.79km WNW of Cobb, CASun, Apr 18, 10:43 PM PDT · 1995 days ago · 2 km deep · 44 km away
57. 2.04km WNW of Cobb, CAMon, Apr 19, 2:33 AM PDT · 1994 days ago · 2 km deep · 47 km away · felt by 1
58. 4.03km SW of Anderson Springs, CAMon, Apr 19, 11:50 AM PDT · 1994 days ago · 3 km deep · 57 km away · felt by 780
59. 2.33km WSW of Anderson Springs, CAMon, Apr 19, 11:51 AM PDT · 1994 days ago · 1 km deep · 55 km away
60. 1.73km SE of The Geysers, CAMon, Apr 19, 11:52 AM PDT · 1994 days ago · 1 km deep · 56 km away

The first 60 of at least 199.

Before

1. 1.626km N of Laytonville, CAThu, Apr 1, 9:43 PM PDT · 2012 days ago · 7 km deep · 89 km away
2. 2.33km NE of The Geysers, CAThu, Apr 1, 2:41 PM PDT · 2012 days ago · 2 km deep · 52 km away · felt by 1
3. 1.713km W of Lakeport, CAThu, Apr 1, 3:29 AM PDT · 2012 days ago · 0 km deep · 19 km away
4. 1.510km ESE of Willits, CAThu, Apr 1, 2:53 AM PDT · 2012 days ago · 7 km deep · 25 km away
5. 1.610km WNW of Calistoga, CAThu, Apr 1, 2:33 AM PDT · 2012 days ago · 8 km deep · 72 km away · felt by 1
6. 1.78km NW of The Geysers, CAWed, Mar 31, 11:19 PM PDT · 2013 days ago · 2 km deep · 46 km away
7. 1.98km WNW of Cobb, CAWed, Mar 31, 9:46 PM PDT · 2013 days ago · 1 km deep · 44 km away · felt by 1
8. 1.68km NW of The Geysers, CAWed, Mar 31, 4:32 PM PDT · 2013 days ago · 2 km deep · 46 km away
9. 1.78km NW of The Geysers, CAWed, Mar 31, 3:37 PM PDT · 2013 days ago · 2 km deep · 46 km away
10. 1.51km WNW of The Geysers, CAWed, Mar 31, 4:17 AM PDT · 2013 days ago · 1 km deep · 53 km away
11. 1.75km W of Cobb, CATue, Mar 30, 10:21 AM PDT · 2014 days ago · 2 km deep · 48 km away
12. 1.83km NNW of The Geysers, CATue, Mar 30, 10:15 AM PDT · 2014 days ago · 0 km deep · 50 km away
13. 1.93km NNW of The Geysers, CATue, Mar 30, 10:07 AM PDT · 2014 days ago · 0 km deep · 50 km away
14. 3.15km W of Cobb, CATue, Mar 30, 10:05 AM PDT · 2014 days ago · 1 km deep · 47 km away · felt by 12
15. 1.820km NNW of Boonville, CATue, Mar 30, 2:56 AM PDT · 2014 days ago · 5 km deep · 37 km away
16. 2.04km NW of The Geysers, CAMon, Mar 29, 3:38 PM PDT · 2015 days ago · 1 km deep · 50 km away · felt by 1
17. 1.77km E of Willits, CASun, Mar 28, 6:45 AM PDT · 2016 days ago · 7 km deep · 31 km away
18. 1.913km SE of Talmage, CASat, Mar 27, 7:53 AM PDT · 2017 days ago · 2 km deep · 18 km away
19. 2.04km SSW of Anderson Springs, CASat, Mar 27, 2:00 AM PDT · 2017 days ago · 1 km deep · 59 km away
20. 2.813km SE of Talmage, CAFri, Mar 26, 3:14 PM PDT · 2018 days ago · -1 km deep · 18 km away · felt by 17

From the USGS Earthquake Hazards Program and its partner networks, event nc73545235. Read Sun, Oct 4, 2026, 7:54 PM UTC.