M1.9 earthquake 6 km E of Covelo, California

Magnitude

1.9 (md), micro

Local time

Fri, May 8, 1987, 9:19 PM PDT

UTC

1987-05-09 04:19:46 UTC

Depth

-1.2 km (-0.8 mi), shallow

Epicenter

39.801° N, 123.173° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 2.8 km in depth

Magnitude uncertainty

±0.11

Depth from

From location

Station coverage gap

122°

Stations used

17

• Covelo, CaliforniaPopulation 1,255. Forecast7 kmE
• Ukiah, CaliforniaPopulation 15,917. Forecast73 kmN
• Chico, CaliforniaPopulation 121,345. Forecast114 kmW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast775 kmNNW

After

1. 1.83 km S of Hamilton City, CaliforniaSat, May 9, 5:44 AM PDT · 14388 days ago · 10 km deep · 100 km away
2. 1.73 km SSW of Hamilton City, CaliforniaSat, May 9, 5:53 AM PDT · 14388 days ago · 13 km deep · 99 km away
3. 1.619 km N of Upper Lake, CaliforniaSat, May 9, 2:47 PM PDT · 14387 days ago · 4 km deep · 58 km away
4. 1.918 km NE of Upper Lake, CaliforniaSun, May 10, 4:04 PM PDT · 14386 days ago · 8 km deep · 68 km away
5. 2.220 km NE of Potter Valley, CaliforniaWed, May 13, 4:36 PM PDT · 14383 days ago · 7 km deep · 46 km away
6. 2.06 km ENE of Covelo, CaliforniaFri, May 15, 7:02 AM PDT · 14381 days ago · 6 km deep · 1 km away
7. 2.316 km NW of Mad River, CaliforniaTue, May 19, 2:34 AM PDT · 14378 days ago · 20 km deep · 92 km away
8. 1.710 km NNW of Laytonville, CaliforniaSat, May 23, 7:00 AM PDT · 14373 days ago · 4 km deep · 31 km away
9. 2.14 km NNW of Mad River, CaliforniaSat, May 23, 6:10 PM PDT · 14373 days ago · 2 km deep · 82 km away
10. 1.511 km N of Brooktrails, CaliforniaWed, May 27, 1:21 AM PDT · 14370 days ago · 7 km deep · 34 km away
11. 1.716 km NNE of Upper Lake, CaliforniaThu, May 28, 4:52 AM PDT · 14369 days ago · 4 km deep · 64 km away
12. 2.29 km E of Hyampom, CaliforniaThu, May 28, 5:14 PM PDT · 14368 days ago · 20 km deep · 94 km away
13. 1.84 km SW of Hopland, CaliforniaSat, May 30, 12:46 AM PDT · 14367 days ago · 5 km deep · 95 km away
14. 2.37 km SSW of Hamilton City, CaliforniaSat, May 30, 7:31 PM PDT · 14366 days ago · 17 km deep · 98 km away
15. 1.812 km ESE of Comptche, CaliforniaMon, Jun 1, 8:52 AM PDT · 14364 days ago · 6 km deep · 67 km away
16. 1.68 km SE of Willits, CaliforniaMon, Jun 1, 1:18 PM PDT · 14364 days ago · 3 km deep · 50 km away
17. 1.817 km ENE of Potter Valley, CaliforniaThu, Jun 4, 12:40 PM PDT · 14361 days ago · 7 km deep · 48 km away
18. 2.13 km SSE of Calpella, CaliforniaSat, Jun 6, 9:02 AM PDT · 14359 days ago · 1 km deep · 67 km away
19. 1.85 km ENE of Covelo, CaliforniaMon, Jun 8, 1:41 PM PDT · 14357 days ago · -1 km deep · 1 km away
20. 2.26 km ENE of Covelo, CaliforniaTue, Jun 9, 7:02 PM PDT · 14356 days ago · 5 km deep · 1 km away
21. 1.94 km NW of Potter Valley, CaliforniaThu, Jun 18, 9:23 AM PDT · 14347 days ago · 4 km deep · 51 km away
22. 1.712 km WSW of Shasta, CaliforniaFri, Jun 19, 5:31 AM PDT · 14347 days ago · 9 km deep · 95 km away
23. 2.012 km SE of Covelo, CaliforniaFri, Jun 19, 10:20 PM PDT · 14346 days ago · 1 km deep · 10 km away
24. 1.521 km ENE of Potter Valley, CaliforniaSun, Jun 21, 11:16 PM PDT · 14344 days ago · 9 km deep · 55 km away
25. 1.68 km NE of Shelter Cove, CaliforniaTue, Jun 23, 4:56 PM PDT · 14342 days ago · 4 km deep · 79 km away
26. 1.610 km SE of Boonville, CaliforniaTue, Jun 23, 6:46 PM PDT · 14342 days ago · 2 km deep · 96 km away
27. 1.810 km SE of Boonville, CaliforniaTue, Jun 23, 7:08 PM PDT · 14342 days ago · 1 km deep · 96 km away
28. 1.73 km ENE of Calpella, CaliforniaWed, Jun 24, 2:31 PM PDT · 14341 days ago · 2 km deep · 62 km away
29. 1.54 km ENE of Calpella, CaliforniaWed, Jun 24, 2:33 PM PDT · 14341 days ago · 5 km deep · 62 km away
30. 2.2near the coast of Northern CaliforniaWed, Jun 24, 2:40 PM PDT · 14341 days ago · 2 km deep · 62 km away
31. 1.54 km ENE of Calpella, CaliforniaWed, Jun 24, 2:41 PM PDT · 14341 days ago · 5 km deep · 62 km away
32. 1.67 km E of Willits, CaliforniaThu, Jun 25, 10:13 AM PDT · 14340 days ago · 8 km deep · 44 km away
33. 1.68 km NW of Redwood Valley, CaliforniaFri, Jun 26, 6:42 AM PDT · 14339 days ago · 3 km deep · 54 km away
34. 3.223 km NE of Potter Valley, CaliforniaTue, Jun 30, 3:36 AM PDT · 14336 days ago · 9 km deep · 39 km away
35. 1.59 km SSE of Boonville, CaliforniaTue, Jun 30, 4:30 AM PDT · 14336 days ago · 3 km deep · 97 km away
36. 2.59 km NW of Stonyford, CaliforniaThu, Jul 2, 10:24 AM PDT · 14333 days ago · 6 km deep · 63 km away
37. 2.45 km ENE of Covelo, CaliforniaSat, Jul 4, 7:27 AM PDT · 14331 days ago · 6 km deep · 1 km away
38. 1.95 km E of Covelo, CaliforniaSat, Jul 4, 7:44 AM PDT · 14331 days ago · -1 km deep · 1 km away
39. 1.79 km ESE of Willits, CaliforniaSat, Jul 4, 11:38 PM PDT · 14331 days ago · 3 km deep · 49 km away
40. 2.14 km W of Laytonville, CaliforniaTue, Jul 7, 1:40 AM PDT · 14329 days ago · -1 km deep · 34 km away
41. 1.711 km E of Calpella, CaliforniaTue, Jul 7, 5:04 PM PDT · 14328 days ago · 1 km deep · 66 km away

Before

1. 2.04 km WNW of Potter Valley, CaliforniaFri, May 8, 4:09 PM PDT · 14388 days ago · 0 km deep · 52 km away
2. 2.012 km N of Comptche, CaliforniaThu, May 7, 1:36 PM PDT · 14389 days ago · 2 km deep · 60 km away
3. 1.73 km ENE of Covelo, CaliforniaThu, May 7, 7:39 AM PDT · 14389 days ago · 8 km deep · 4 km away
4. 1.75 km WSW of Hopland, CaliforniaWed, May 6, 3:12 PM PDT · 14390 days ago · 5 km deep · 95 km away
5. 2.318 km NW of Mad River, CaliforniaTue, May 5, 3:10 PM PDT · 14391 days ago · 16 km deep · 95 km away
6. 2.06 km E of Covelo, CaliforniaMon, May 4, 6:14 PM PDT · 14392 days ago · -1 km deep · 0 km away
7. 1.75 km E of Covelo, CaliforniaSun, May 3, 10:39 AM PDT · 14393 days ago · -1 km deep · 1 km away
8. 1.95 km E of Covelo, CaliforniaSun, May 3, 10:05 AM PDT · 14393 days ago · -1 km deep · 1 km away
9. 2.06 km ENE of Covelo, CaliforniaSat, May 2, 10:08 PM PDT · 14394 days ago · 6 km deep · 1 km away
10. 1.715 km E of Comptche, CaliforniaSat, May 2, 4:36 AM PDT · 14395 days ago · 3 km deep · 63 km away
11. 1.94 km ENE of Covelo, CaliforniaFri, May 1, 3:41 PM PDT · 14395 days ago · 2 km deep · 3 km away
12. 3.86 km ENE of Covelo, CaliforniaFri, May 1, 3:22 PM PDT · 14395 days ago · 8 km deep · 1 km away
13. 2.312 km ESE of Laytonville, CaliforniaFri, May 1, 1:09 PM PDT · 14395 days ago · 10 km deep · 24 km away
14. 2.917 km NE of Myers Flat, CaliforniaFri, May 1, 8:05 AM PDT · 14395 days ago · 22 km deep · 79 km away
15. 2.73 km W of Mad River, CaliforniaThu, Apr 30, 3:58 AM PDT · 14397 days ago · 29 km deep · 80 km away
16. 1.87 km NE of Upper Lake, CaliforniaMon, Apr 27, 8:08 AM PDT · 14399 days ago · 6 km deep · 71 km away
17. 1.60 km ENE of Kelseyville, CaliforniaMon, Apr 27, 6:02 AM PDT · 14400 days ago · 4 km deep · 96 km away
18. 1.90 km WNW of Kelseyville, CaliforniaMon, Apr 27, 4:15 AM PDT · 14400 days ago · 3 km deep · 96 km away
19. 2.90 km ENE of Kelseyville, CaliforniaMon, Apr 27, 1:06 AM PDT · 14400 days ago · 4 km deep · 96 km away
20. 1.615 km ENE of Potter Valley, CaliforniaSun, Apr 26, 12:03 PM PDT · 14400 days ago · 6 km deep · 53 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1149708. Read Tue, Sep 29, 2026, 12:38 AM UTC.