M1.7 earthquake 30km NNW of Forest Ranch, CA

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Tue, Apr 6, 2021, 5:59 AM PDT

UTC

2021-04-06 12:59:59 UTC

Depth

15.8 km (9.8 mi), shallow

Epicenter

40.136° N, 121.781° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.9 km in depth

Magnitude uncertainty

±0.16

Depth from

From location

Station coverage gap

135°

Stations used

14

• Cohasset, CaliforniaPopulation 847. Forecast24 kmN
• Red Bluff, CaliforniaPopulation 14,131. Forecast39 kmE
• Chico, CaliforniaPopulation 121,345. Forecast46 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast746 kmNNW

After

1. 2.02km ENE of Montgomery Creek, CAFri, Apr 9, 6:08 AM PDT · 2004 days ago · 15 km deep · 80 km away
2. 2.23km ENE of Canyondam, CASat, Apr 10, 1:16 AM PDT · 2003 days ago · 5 km deep · 63 km away
3. 2.39km ENE of Viola, CASun, Apr 11, 8:30 PM PDT · 2001 days ago · 3 km deep · 48 km away
4. 1.623km N of Shasta Lake, CAMon, Apr 12, 12:22 AM PDT · 2001 days ago · 9 km deep · 98 km away
5. 1.921km SE of Anderson, CAWed, Apr 14, 10:41 AM PDT · 1999 days ago · 12 km deep · 35 km away
6. 1.814km NNW of Viola, CAWed, Apr 14, 12:29 PM PDT · 1999 days ago · 0 km deep · 56 km away
7. 2.19km NNE of Burney, CAFri, Apr 16, 11:47 AM PDT · 1997 days ago · 13 km deep · 93 km away
8. 3.815km E of Willows, CAMon, Apr 19, 7:39 PM PDT · 1993 days ago · 23 km deep · 72 km away · felt by 167
9. 2.815km E of Willows, CAMon, Apr 19, 9:25 PM PDT · 1993 days ago · 23 km deep · 72 km away · felt by 4
10. 2.141km NE of Covelo, CATue, Apr 20, 10:15 AM PDT · 1993 days ago · 9 km deep · 98 km away
11. 1.89km ESE of Millville, CAThu, Apr 22, 1:19 PM PDT · 1991 days ago · 16 km deep · 51 km away
12. 2.010km WNW of Viola, CAFri, Apr 23, 10:08 AM PDT · 1990 days ago · 10 km deep · 47 km away
13. 1.818km WSW of Almanor, CAFri, Apr 23, 9:55 PM PDT · 1989 days ago · 11 km deep · 35 km away
14. 1.83km WSW of Shasta Lake, CATue, Apr 27, 2:42 PM PDT · 1986 days ago · 17 km deep · 80 km away
15. 2.219km WSW of Manton, CAThu, Apr 29, 12:23 AM PDT · 1984 days ago · 15 km deep · 31 km away
16. 2.72km NNW of Chico, CASat, May 1, 11:26 AM PDT · 1982 days ago · 14 km deep · 43 km away · felt by 4
17. 2.38km WNW of Willows, CAMon, May 3, 6:28 PM PDT · 1979 days ago · 28 km deep · 79 km away · felt by 3
18. 2.47km WNW of Willows, CAThu, May 6, 5:51 PM PDT · 1977 days ago · 28 km deep · 79 km away · felt by 3
19. 1.72km NE of Chester, CASun, May 9, 6:35 AM PDT · 1974 days ago · 10 km deep · 52 km away
20. 1.913km W of Shingletown, CASun, May 9, 7:01 AM PDT · 1974 days ago · 17 km deep · 45 km away
21. 2.126km W of Rancho Tehama Reserve, CATue, May 11, 8:38 AM PDT · 1972 days ago · 1 km deep · 80 km away
22. 2.925km N of Shasta Lake, CAWed, May 12, 10:44 AM PDT · 1971 days ago · 20 km deep · 99 km away · felt by 16
23. 1.625km NNE of Hamilton Branch, CAWed, May 12, 7:53 PM PDT · 1970 days ago · 2 km deep · 79 km away
24. 2.010km ENE of French Gulch, CAThu, May 13, 10:05 PM PDT · 1969 days ago · 15 km deep · 91 km away
25. 1.69km E of Millville, CAThu, May 20, 8:03 AM PDT · 1963 days ago · 11 km deep · 53 km away
26. 2.018km WNW of Round Mountain, CAThu, May 20, 4:44 PM PDT · 1963 days ago · 13 km deep · 87 km away
27. 1.920km NE of Red Bluff, CATue, May 25, 2:45 AM PDT · 1958 days ago · 10 km deep · 33 km away
28. 1.65km N of Millville, CAThu, May 27, 4:43 AM PDT · 1956 days ago · 14 km deep · 62 km away
29. 1.74km NNE of Canyondam, CATue, Jun 1, 10:07 AM PDT · 1951 days ago · 8 km deep · 62 km away
30. 1.63km ENE of Prattville, CAFri, Jun 4, 6:17 PM PDT · 1947 days ago · 7 km deep · 56 km away

Before

1. 1.84km SSE of Hamilton City, CAMon, Apr 5, 4:26 AM PDT · 2008 days ago · 16 km deep · 51 km away
2. 1.95km NNE of Almanor, CAMon, Apr 5, 3:10 AM PDT · 2008 days ago · 7 km deep · 55 km away
3. 2.227km WSW of Rancho Tehama Reserve, CASun, Apr 4, 7:10 PM PDT · 2008 days ago · 9 km deep · 81 km away
4. 2.214km NNE of Mineral, CASun, Apr 4, 9:38 AM PDT · 2009 days ago · 3 km deep · 44 km away
5. 1.814km NNE of Mineral, CASun, Apr 4, 9:32 AM PDT · 2009 days ago · 3 km deep · 44 km away
6. 1.66km WNW of Palo Cedro, CASun, Apr 4, 5:29 AM PDT · 2009 days ago · 15 km deep · 67 km away
7. 1.512km W of Shingletown, CASun, Apr 4, 2:52 AM PDT · 2009 days ago · 17 km deep · 44 km away
8. 3.013km W of Shingletown, CAWed, Mar 31, 11:03 PM PDT · 2012 days ago · 19 km deep · 43 km away · felt by 77
9. 1.72 km ENE of East Quincy, CaliforniaTue, Mar 30, 12:10 AM PDT · 2014 days ago · 15 km deep · 81 km away
10. 1.516km NNW of Shingletown, CAMon, Mar 29, 7:21 PM PDT · 2014 days ago · 3 km deep · 57 km away
11. 2.513km N of Viola, CAWed, Mar 24, 2:38 AM PDT · 2020 days ago · 8 km deep · 56 km away
12. 1.511km SW of Chester, CAWed, Mar 17, 8:39 PM PDT · 2026 days ago · 9 km deep · 40 km away
13. 1.813km NNE of Shingletown, CAWed, Mar 17, 4:11 PM PDT · 2027 days ago · 7 km deep · 51 km away
14. 2.315km E of Anderson, CATue, Mar 16, 1:09 AM PDT · 2028 days ago · 21 km deep · 43 km away
15. 1.619km NW of Viola, CASun, Mar 14, 8:55 AM PDT · 2030 days ago · 9 km deep · 58 km away
16. 1.92km SSW of Shasta Lake, CAFri, Mar 12, 5:15 PM PST · 2031 days ago · 19 km deep · 78 km away
17. 2.242km NE of Covelo, CAWed, Mar 10, 8:35 AM PST · 2034 days ago · 4 km deep · 95 km away · felt by 1
18. 2.64km NNE of Almanor, CASun, Mar 7, 9:11 AM PST · 2037 days ago · 9 km deep · 54 km away · felt by 5
19. 1.56km NNE of Almanor, CASun, Mar 7, 9:08 AM PST · 2037 days ago · 8 km deep · 54 km away · felt by 1

From the USGS Earthquake Hazards Program and its partner networks, event nc73545970. Read Sun, Oct 4, 2026, 12:36 PM UTC.