M1.7 earthquake 10 km ESE of Covelo, California

Magnitude

1.7 (md), micro

Local time

Sat, Apr 20, 1985, 6:24 AM PST

UTC

1985-04-20 14:24:39 UTC

Depth

1.3 km (0.8 mi), shallow

Epicenter

39.762° N, 123.129° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 7.9 km in depth

Magnitude uncertainty

±0.20

Depth from

From location

Station coverage gap

129°

Stations used

5

• Covelo, CaliforniaPopulation 1,255. Forecast11 kmESE
• Ukiah, CaliforniaPopulation 15,917. Forecast68 kmN
• Chico, CaliforniaPopulation 121,345. Forecast110 kmW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast769 kmNNW

After

1. 2.322 km WSW of Williams, CaliforniaSat, Apr 20, 12:30 PM PST · 15130 days ago · 3 km deep · 98 km away
2. 1.64 km SW of Hopland, CaliforniaSun, Apr 21, 3:09 PM PST · 15129 days ago · 5 km deep · 91 km away
3. 2.513 km NNE of Laytonville, CaliforniaSun, Apr 21, 3:59 PM PST · 15129 days ago · 10 km deep · 25 km away
4. 1.78 km SW of Weott, CaliforniaTue, Apr 23, 2:04 AM PST · 15127 days ago · 4 km deep · 91 km away
5. 1.813 km SE of Laytonville, CaliforniaThu, Apr 25, 5:25 AM PST · 15125 days ago · 10 km deep · 25 km away
6. 1.76 km NE of Brooktrails, CaliforniaSat, Apr 27, 3:57 PM PST · 15123 days ago · 6 km deep · 36 km away
7. 1.911 km WSW of Weott, CaliforniaSat, Apr 27, 8:30 PM PST · 15123 days ago · 4 km deep · 96 km away
8. 1.85 km ESE of Willits, CaliforniaWed, May 1, 6:23 AM PDT · 15119 days ago · 0 km deep · 44 km away
9. 2.321 km WSW of Williams, CaliforniaWed, May 1, 8:03 AM PDT · 15119 days ago · 0 km deep · 97 km away
10. 2.16 km NW of Alderpoint, CaliforniaThu, May 2, 10:12 AM PDT · 15118 days ago · 21 km deep · 68 km away
11. 1.710 km E of Red Bluff, CaliforniaFri, May 3, 7:33 AM PDT · 15117 days ago · 3 km deep · 98 km away
12. 2.231 km WSW of Paskenta, CaliforniaSat, May 4, 9:27 PM PDT · 15116 days ago · 9 km deep · 22 km away
13. 1.65 km SSE of Benbow, CaliforniaThu, May 9, 7:52 PM PDT · 15111 days ago · 15 km deep · 61 km away
14. 1.95 km NW of Shelter Cove, CaliforniaMon, May 13, 4:25 AM PDT · 15107 days ago · 16 km deep · 90 km away
15. 2.15 km ENE of Calpella, CaliforniaMon, May 13, 6:39 AM PDT · 15107 days ago · 6 km deep · 57 km away
16. 1.619 km E of Potter Valley, CaliforniaMon, May 13, 7:10 PM PDT · 15107 days ago · 5 km deep · 50 km away
17. 1.94 km ENE of Calpella, CaliforniaMon, May 13, 9:22 PM PDT · 15107 days ago · 0 km deep · 57 km away
18. 1.78 km WSW of Red Bluff, CaliforniaMon, May 13, 11:43 PM PDT · 15107 days ago · 17 km deep · 80 km away
19. 1.84 km WSW of Laytonville, CaliforniaTue, May 14, 2:01 AM PDT · 15107 days ago · 1 km deep · 36 km away
20. 1.617 km NE of Upper Lake, CaliforniaTue, May 14, 6:37 PM PDT · 15106 days ago · 4 km deep · 61 km away
21. 2.410 km NNE of Shelter Cove, CaliforniaTue, May 14, 10:45 PM PDT · 15106 days ago · 20 km deep · 85 km away
22. 2.14 km ENE of Hopland, CaliforniaFri, May 17, 12:57 AM PDT · 15104 days ago · 3 km deep · 87 km away
23. 1.514 km S of Hamilton City, CaliforniaSat, May 18, 4:58 PM PDT · 15102 days ago · 5 km deep · 99 km away
24. 1.84 km SW of Albion, CaliforniaMon, May 20, 8:50 AM PDT · 15100 days ago · 1 km deep · 86 km away
25. 1.69 km NE of Hopland, CaliforniaMon, May 20, 10:47 PM PDT · 15100 days ago · 6 km deep · 81 km away
26. 2.16 km SW of Laytonville, CaliforniaFri, May 24, 9:30 AM PDT · 15096 days ago · 6 km deep · 37 km away
27. 2.46 km SW of Laytonville, CaliforniaFri, May 24, 9:31 AM PDT · 15096 days ago · 6 km deep · 37 km away
28. 2.614 km N of Upper Lake, CaliforniaFri, May 24, 9:45 PM PDT · 15096 days ago · 9 km deep · 55 km away
29. 1.913 km N of Upper Lake, CaliforniaFri, May 24, 9:47 PM PDT · 15096 days ago · 8 km deep · 56 km away
30. 2.08 km N of Cloverdale, CaliforniaTue, May 28, 7:17 AM PDT · 15092 days ago · 3 km deep · 98 km away
31. 1.612 km ENE of Upper Lake, CaliforniaWed, May 29, 4:47 PM PDT · 15091 days ago · 9 km deep · 66 km away
32. 1.71 km NNE of Talmage, CaliforniaWed, May 29, 6:38 PM PDT · 15091 days ago · 4 km deep · 69 km away
33. 2.7near the coast of Northern CaliforniaFri, May 31, 8:22 AM PDT · 15089 days ago · 4 km deep · 94 km away
34. 1.77 km NE of Clearlake, CaliforniaSat, Jun 1, 4:45 PM PDT · 15088 days ago · 1 km deep · 98 km away
35. 1.930 km NE of Covelo, CaliforniaSun, Jun 2, 6:11 PM PDT · 15087 days ago · 3 km deep · 27 km away
36. 2.624 km WNW of Paskenta, CaliforniaSun, Jun 2, 6:51 PM PDT · 15087 days ago · -1 km deep · 34 km away
37. 1.65km WNW of Lakeport, CASun, Jun 2, 10:24 PM PDT · 15087 days ago · 24 km deep · 80 km away
38. 2.210 km NNE of Hopland, CaliforniaMon, Jun 3, 3:18 AM PDT · 15086 days ago · 5 km deep · 79 km away
39. 2.010 km NNE of Hopland, CaliforniaMon, Jun 3, 3:23 AM PDT · 15086 days ago · 5 km deep · 78 km away
40. 2.012 km SW of Weott, CaliforniaMon, Jun 3, 6:19 PM PDT · 15086 days ago · 4 km deep · 94 km away
41. 1.722 km NE of Potter Valley, CaliforniaTue, Jun 4, 12:29 PM PDT · 15085 days ago · 7 km deep · 37 km away
42. 1.89 km S of Hopland, CaliforniaTue, Jun 4, 6:54 PM PDT · 15085 days ago · 5 km deep · 97 km away
43. 1.8near the coast of Northern CaliforniaWed, Jun 5, 12:03 PM PDT · 15084 days ago · 4 km deep · 53 km away
44. 2.014 km N of Upper Lake, CaliforniaWed, Jun 5, 1:20 PM PDT · 15084 days ago · -1 km deep · 55 km away
45. 3.014 km WSW of Hayfork, CaliforniaSat, Jun 8, 8:57 PM PDT · 15081 days ago · 33 km deep · 84 km away
46. 1.89 km WSW of Ukiah, CaliforniaTue, Jun 11, 9:25 AM PDT · 15078 days ago · 4 km deep · 72 km away
47. 1.67 km NNE of Hopland, CaliforniaTue, Jun 11, 11:46 PM PDT · 15078 days ago · 0 km deep · 81 km away
48. 1.73 km NNW of Hamilton City, CaliforniaThu, Jun 13, 4:00 AM PDT · 15076 days ago · 10 km deep · 94 km away
49. 1.99 km W of Redwood Valley, CaliforniaThu, Jun 13, 10:38 PM PDT · 15076 days ago · 7 km deep · 57 km away
50. 2.19 km ENE of Brooktrails, CaliforniaMon, Jun 17, 3:21 AM PDT · 15072 days ago · 10 km deep · 34 km away
51. 3.025 km WNW of Paskenta, CaliforniaWed, Jun 19, 6:00 AM PDT · 15070 days ago · -1 km deep · 33 km away

Before

1. 1.612 km NNE of Laytonville, CaliforniaFri, Apr 19, 6:30 PM PST · 15131 days ago · 6 km deep · 24 km away
2. 2.014 km N of Upper Lake, CaliforniaFri, Apr 19, 3:19 PM PST · 15131 days ago · 5 km deep · 55 km away
3. 2.221 km WSW of Williams, CaliforniaWed, Apr 17, 10:57 PM PST · 15133 days ago · 0 km deep · 98 km away
4. 1.710 km SSE of Laytonville, CaliforniaTue, Apr 16, 7:54 PM PST · 15134 days ago · 7 km deep · 31 km away
5. 2.010 km E of Red Bluff, CaliforniaTue, Apr 16, 3:54 AM PST · 15134 days ago · 4 km deep · 98 km away
6. 1.812 km E of Red Bluff, CaliforniaMon, Apr 15, 7:08 PM PST · 15135 days ago · 1 km deep · 100 km away
7. 1.918 km NE of Upper Lake, CaliforniaMon, Apr 15, 6:36 PM PST · 15135 days ago · 7 km deep · 60 km away
8. 2.810 km E of Red Bluff, CaliforniaMon, Apr 15, 2:55 PM PST · 15135 days ago · 10 km deep · 98 km away
9. 2.07 km NE of Covelo, CaliforniaSun, Apr 14, 9:22 PM PST · 15136 days ago · 5 km deep · 10 km away
10. 1.712 km ENE of Redcrest, CaliforniaSun, Apr 14, 2:28 AM PST · 15136 days ago · 24 km deep · 98 km away
11. 1.615 km WSW of Laytonville, CaliforniaSat, Apr 13, 11:01 AM PST · 15137 days ago · 3 km deep · 47 km away
12. 2.311 km SSE of Laytonville, CaliforniaThu, Apr 11, 10:59 PM PST · 15139 days ago · 7 km deep · 31 km away
13. 2.111 km E of Red Bluff, CaliforniaThu, Apr 11, 5:55 AM PST · 15139 days ago · 14 km deep · 100 km away
14. 1.74 km WSW of Laytonville, CaliforniaWed, Apr 10, 6:18 PM PST · 15140 days ago · 4 km deep · 36 km away
15. 1.83 km WSW of Myers Flat, CaliforniaWed, Apr 10, 3:23 AM PST · 15140 days ago · 5 km deep · 86 km away
16. 2.516 km NNE of Elk Creek, CaliforniaTue, Apr 9, 11:32 PM PST · 15141 days ago · 0 km deep · 58 km away
17. 1.65 km SSW of Redcrest, CaliforniaMon, Apr 8, 4:33 AM PST · 15142 days ago · 21 km deep · 98 km away
18. 1.820 km WSW of Williams, CaliforniaSun, Apr 7, 1:57 PM PST · 15143 days ago · 4 km deep · 97 km away
19. 3.114 km N of Brooktrails, CaliforniaSun, Apr 7, 9:06 AM PST · 15143 days ago · -1 km deep · 29 km away
20. 1.72 km SSE of Clear Lake Riviera, CaliforniaSat, Apr 6, 1:25 AM PST · 15144 days ago · 1 km deep · 99 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1127484. Read Tue, Sep 22, 2026, 8:52 PM UTC.