M1.7 earthquake 13 km SE of Big Bend, California

Magnitude

1.7 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Thu, Jul 28, 1983, 10:59 PM PDT

UTC

1983-07-29 05:59:37 UTC

Depth

3.3 km (2.0 mi), shallow

Epicenter

40.928° N, 121.815° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 32.4 km horizontally, 83.0 km in depth

Magnitude uncertainty

±0.18

Depth from

From location

Station coverage gap

276°, poorly surrounded by stations

Stations used

5

• Burney, CaliforniaPopulation 3,154. Forecast14 kmWNW
• Shasta Lake, CaliforniaPopulation 10,159. Forecast54 kmENE
• Chico, CaliforniaPopulation 121,345. Forecast133 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast827 kmNNW

After

1. 2.111 km SSE of Tennant, CaliforniaFri, Jul 29, 4:29 AM PDT · 15771 days ago · 3 km deep · 63 km away
2. 2.715 km W of Round Mountain, CaliforniaMon, Aug 1, 5:23 PM PDT · 15768 days ago · 11 km deep · 30 km away
3. 2.325 km E of Hat Creek, CaliforniaTue, Aug 2, 4:20 PM PDT · 15767 days ago · 8 km deep · 52 km away
4. 2.63 km E of Prattville, CaliforniaThu, Aug 4, 12:30 AM PDT · 15766 days ago · 0 km deep · 99 km away
5. 2.015 km WSW of Chester, CaliforniaFri, Aug 5, 11:32 AM PDT · 15764 days ago · 10 km deep · 81 km away
6. 1.69 km W of Chester, CaliforniaFri, Aug 5, 2:21 PM PDT · 15764 days ago · 1 km deep · 81 km away
7. 1.93 km WSW of Chester, CaliforniaThu, Aug 11, 10:47 PM PDT · 15758 days ago · 3 km deep · 84 km away
8. 2.49 km WSW of Chester, CaliforniaSat, Aug 13, 2:53 PM PDT · 15756 days ago · 5 km deep · 81 km away
9. 2.212 km ENE of Bend, CaliforniaMon, Aug 15, 1:41 PM PDT · 15754 days ago · -1 km deep · 73 km away
10. 2.312 km ENE of Butte Meadows, CaliforniaTue, Aug 16, 7:41 AM PDT · 15753 days ago · 33 km deep · 96 km away
11. 2.212 km ESE of Cottonwood, CaliforniaTue, Aug 16, 11:24 PM PDT · 15753 days ago · 15 km deep · 69 km away
12. 1.911 km ENE of Mineral, CaliforniaWed, Aug 17, 8:11 AM PDT · 15752 days ago · 3 km deep · 66 km away
13. 1.612 km N of Mineral, CaliforniaWed, Aug 17, 1:47 PM PDT · 15752 days ago · -2 km deep · 56 km away
14. 1.814 km NNE of Mineral, CaliforniaWed, Aug 17, 2:03 PM PDT · 15752 days ago · 4 km deep · 56 km away
15. 1.813 km NE of Bend, CaliforniaWed, Aug 17, 2:11 PM PDT · 15752 days ago · 15 km deep · 69 km away
16. 1.61 km NE of Dunsmuir, CaliforniaSat, Aug 20, 1:17 AM PDT · 15750 days ago · 10 km deep · 49 km away
17. 1.812 km NNE of Mineral, CaliforniaSat, Aug 20, 3:42 AM PDT · 15749 days ago · 1 km deep · 57 km away
18. 1.815 km NNE of Mineral, CaliforniaSat, Aug 20, 1:27 PM PDT · 15749 days ago · 2 km deep · 56 km away
19. 2.212 km ENE of Bend, CaliforniaThu, Aug 25, 2:49 PM PDT · 15744 days ago · 13 km deep · 74 km away
20. 2.615 km E of Hat Creek, CaliforniaSun, Aug 28, 9:31 PM PDT · 15741 days ago · 14 km deep · 41 km away
21. 2.425 km NNW of Susanville, CaliforniaMon, Sep 5, 9:34 AM PDT · 15733 days ago · 0 km deep · 93 km away
22. 2.24 km NE of Hat Creek, CaliforniaTue, Sep 6, 6:51 AM PDT · 15732 days ago · 13 km deep · 29 km away
23. 2.411 km ENE of Bend, CaliforniaFri, Sep 9, 2:48 PM PDT · 15729 days ago · 2 km deep · 73 km away
24. 1.68 km NNE of McCloud, CaliforniaSat, Sep 10, 1:45 AM PDT · 15729 days ago · 8 km deep · 51 km away
25. 1.610 km W of Lake Almanor West, CaliforniaWed, Sep 14, 8:50 AM PDT · 15724 days ago · 14 km deep · 87 km away
26. 1.720 km ENE of Lakehead, CaliforniaThu, Sep 15, 2:13 AM PDT · 15724 days ago · 4 km deep · 30 km away
27. 1.713 km NNE of Mineral, CaliforniaFri, Sep 16, 2:30 AM PDT · 15723 days ago · -1 km deep · 56 km away
28. 2.012 km ENE of Bend, CaliforniaFri, Sep 16, 10:52 AM PDT · 15722 days ago · -1 km deep · 72 km away
29. 1.618 km N of Big Bend, CaliforniaFri, Sep 16, 2:19 PM PDT · 15722 days ago · 12 km deep · 30 km away
30. 1.911 km WSW of Dunsmuir, CaliforniaFri, Sep 16, 5:42 PM PDT · 15722 days ago · 16 km deep · 57 km away
31. 2.012 km WSW of Dunsmuir, CaliforniaFri, Sep 16, 9:50 PM PDT · 15722 days ago · 14 km deep · 57 km away
32. 1.812 km NNE of Mineral, CaliforniaSat, Sep 17, 5:55 AM PDT · 15721 days ago · 2 km deep · 57 km away
33. 2.212 km NNE of Mineral, CaliforniaSat, Sep 17, 7:35 AM PDT · 15721 days ago · 3 km deep · 57 km away
34. 1.812 km NNE of Mineral, CaliforniaSat, Sep 17, 7:37 AM PDT · 15721 days ago · 2 km deep · 58 km away
35. 2.218 km N of Big Bend, CaliforniaMon, Sep 19, 2:38 AM PDT · 15720 days ago · 8 km deep · 30 km away
36. 2.017 km N of Big Bend, CaliforniaMon, Sep 19, 2:59 AM PDT · 15720 days ago · 13 km deep · 30 km away
37. 1.85 km W of Trinity Center, CaliforniaTue, Sep 20, 4:58 AM PDT · 15718 days ago · 4 km deep · 80 km away
38. 1.615 km NNE of Mineral, CaliforniaFri, Sep 23, 7:43 AM PDT · 15715 days ago · 4 km deep · 55 km away
39. 2.18 km SE of Manton, CaliforniaMon, Sep 26, 1:30 PM PDT · 15712 days ago · 1 km deep · 62 km away
40. 2.418 km N of Big Bend, CaliforniaMon, Sep 26, 7:50 PM PDT · 15712 days ago · 9 km deep · 30 km away

Before

1. 1.97 km SSW of Tennant, CaliforniaThu, Jul 28, 10:24 PM PDT · 15772 days ago · 3 km deep · 67 km away
2. 1.96 km SW of Tennant, CaliforniaThu, Jul 28, 10:15 PM PDT · 15772 days ago · 5 km deep · 69 km away
3. 1.93 km SSW of Tennant, CaliforniaThu, Jul 28, 10:00 PM PDT · 15772 days ago · -2 km deep · 70 km away
4. 2.36 km ESE of Butte Meadows, CaliforniaSat, Jul 23, 1:41 AM PDT · 15778 days ago · 1 km deep · 100 km away
5. 1.717 km SE of Round Mountain, CaliforniaWed, Jul 20, 10:59 PM PDT · 15780 days ago · 10 km deep · 29 km away
6. 1.97 km NNE of McCloud, CaliforniaSat, Jul 16, 11:53 AM PDT · 15784 days ago · 7 km deep · 50 km away
7. 3.120 km SE of Paynes Creek, CaliforniaSun, Jul 10, 1:11 AM PDT · 15791 days ago · 0 km deep · 81 km away
8. 1.812 km E of Bend, CaliforniaWed, Jul 6, 12:00 AM PDT · 15795 days ago · 7 km deep · 77 km away
9. 2.413 km NNW of Cohasset, CaliforniaTue, Jul 5, 11:34 AM PDT · 15795 days ago · 4 km deep · 99 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1099488. Read Fri, Oct 2, 2026, 9:46 PM UTC.