M1.8 earthquake 6 km ENE of Brooktrails, California

Magnitude

1.8 (md), micro

Local time

Mon, Mar 26, 1979, 1:54 PM PST

UTC

1979-03-26 21:54:25 UTC

Depth

3.8 km (2.4 mi), shallow

Epicenter

39.465° N, 123.312° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 7.3 km horizontally, 3.9 km in depth

Magnitude uncertainty

±0.13

Depth from

From location

Station coverage gap

333°, poorly surrounded by stations

Stations used

4

• Brooktrails, CaliforniaPopulation 3,235. Forecast7 kmENE
• Ukiah, CaliforniaPopulation 15,917. Forecast36 kmNNW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast125 kmNNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast752 kmNW

After

1. 1.58 km WSW of Cobb, CaliforniaThu, Mar 29, 12:09 AM PST · 17344 days ago · 4 km deep · 86 km away
2. 1.69 km E of Willits, CaliforniaThu, Mar 29, 3:23 AM PST · 17344 days ago · 4 km deep · 9 km away
3. 1.65 km ENE of Lucerne, CaliforniaFri, Mar 30, 6:38 AM PST · 17343 days ago · 8 km deep · 63 km away
4. 1.71 km W of Benbow, CaliforniaSat, Mar 31, 6:03 AM PST · 17342 days ago · 19 km deep · 79 km away
5. 1.53 km ESE of Calpella, CaliforniaSun, Apr 1, 8:00 PM PST · 17341 days ago · 5 km deep · 30 km away
6. 1.75 km NE of Nice, CaliforniaSun, Apr 1, 11:43 PM PST · 17340 days ago · 9 km deep · 54 km away
7. 2.13 km ESE of Calpella, CaliforniaMon, Apr 2, 1:18 PM PST · 17340 days ago · 6 km deep · 29 km away
8. 2.17 km SSE of Potter Valley, CaliforniaMon, Apr 2, 1:18 PM PST · 17340 days ago · 41 km deep · 30 km away
9. 1.53 km ESE of Calpella, CaliforniaMon, Apr 2, 1:19 PM PST · 17340 days ago · 6 km deep · 29 km away
10. 1.710 km NNW of Potter Valley, CaliforniaTue, Apr 3, 9:26 AM PST · 17339 days ago · 4 km deep · 14 km away
11. 1.912 km NNW of Potter Valley, CaliforniaTue, Apr 3, 9:40 AM PST · 17339 days ago · 12 km deep · 12 km away
12. 1.64 km SSE of Hopland, CaliforniaTue, Apr 3, 3:18 PM PST · 17339 days ago · 7 km deep · 61 km away
13. 2.03 km ESE of Talmage, CaliforniaTue, Apr 3, 8:41 PM PST · 17339 days ago · 3 km deep · 41 km away
14. 1.95 km WSW of Cobb, CaliforniaWed, Apr 4, 10:16 AM PST · 17338 days ago · 0 km deep · 86 km away
15. 1.55 km WSW of Cobb, CaliforniaWed, Apr 4, 11:24 AM PST · 17338 days ago · 0 km deep · 86 km away
16. 1.87 km ENE of Leggett, CaliforniaThu, Apr 5, 6:31 AM PST · 17337 days ago · 8 km deep · 54 km away
17. 1.68 km SSW of Benbow, CaliforniaThu, Apr 5, 7:52 AM PST · 17337 days ago · 15 km deep · 75 km away
18. 1.97 km NE of Phillipsville, CaliforniaSat, Apr 7, 8:26 PM PST · 17335 days ago · -1 km deep · 95 km away
19. 1.66 km NE of Phillipsville, CaliforniaSat, Apr 7, 8:28 PM PST · 17335 days ago · -1 km deep · 95 km away
20. 2.17 km ENE of Phillipsville, CaliforniaThu, Apr 12, 3:48 AM PST · 17330 days ago · 24 km deep · 92 km away
21. 1.66 km WSW of Cobb, CaliforniaThu, Apr 12, 5:53 PM PST · 17330 days ago · 0 km deep · 86 km away
22. 2.68 km WSW of Cobb, CaliforniaSun, Apr 15, 5:02 AM PST · 17327 days ago · 4 km deep · 86 km away
23. 1.58 km WSW of Cobb, CaliforniaSun, Apr 15, 1:25 PM PST · 17327 days ago · 4 km deep · 86 km away
24. 1.95 km ESE of Clearlake Oaks, CaliforniaSun, Apr 15, 3:10 PM PST · 17327 days ago · 2 km deep · 79 km away
25. 2.06 km WSW of Cobb, CaliforniaSun, Apr 15, 11:30 PM PST · 17326 days ago · 4 km deep · 85 km away
26. 1.817 km SE of Alderpoint, CaliforniaThu, Apr 19, 3:20 AM PST · 17323 days ago · 12 km deep · 69 km away
27. 2.57 km WSW of Cobb, CaliforniaThu, Apr 19, 7:34 AM PST · 17323 days ago · 3 km deep · 85 km away
28. 1.910 km NNW of Potter Valley, CaliforniaSat, Apr 21, 1:59 PM PST · 17321 days ago · 4 km deep · 13 km away
29. 1.610 km SE of Boonville, CaliforniaTue, Apr 24, 7:45 AM PST · 17318 days ago · 1 km deep · 59 km away
30. 1.63 km N of Redway, CaliforniaThu, Apr 26, 6:54 AM PST · 17316 days ago · 17 km deep · 88 km away
31. 2.10 km N of Hopland, CaliforniaFri, Apr 27, 12:25 AM PST · 17315 days ago · 7 km deep · 56 km away
32. 2.46 km W of Cobb, CaliforniaSat, Apr 28, 5:16 PM PST · 17314 days ago · 1 km deep · 84 km away
33. 1.99 km W of Cobb, CaliforniaTue, May 1, 4:26 AM PDT · 17311 days ago · 1 km deep · 83 km away
34. 2.411 km E of Comptche, CaliforniaTue, May 1, 2:53 PM PDT · 17311 days ago · 13 km deep · 25 km away
35. 1.714 km NNW of Potter Valley, CaliforniaTue, May 1, 11:34 PM PDT · 17310 days ago · 4 km deep · 11 km away
36. 3.06 km W of Cobb, CaliforniaWed, May 2, 1:50 AM PDT · 17310 days ago · 1 km deep · 84 km away
37. 1.56 km WSW of Cobb, CaliforniaSat, May 5, 1:02 PM PDT · 17307 days ago · 1 km deep · 86 km away
38. 1.64 km WSW of Cobb, CaliforniaFri, May 11, 2:25 PM PDT · 17301 days ago · 1 km deep · 87 km away
39. 1.65 km WSW of Cobb, CaliforniaFri, May 11, 4:16 PM PDT · 17301 days ago · 0 km deep · 86 km away
40. 2.33 km WSW of Cobb, CaliforniaSun, May 13, 7:11 AM PDT · 17299 days ago · 2 km deep · 87 km away
41. 1.87 km W of Cobb, CaliforniaTue, May 15, 6:39 PM PDT · 17297 days ago · 1 km deep · 85 km away
42. 2.27 km W of Cobb, CaliforniaThu, May 17, 2:32 AM PDT · 17295 days ago · 3 km deep · 84 km away
43. 2.28 km WSW of Cobb, CaliforniaSat, May 19, 4:08 PM PDT · 17293 days ago · 1 km deep · 85 km away
44. 1.78 km W of Cobb, CaliforniaTue, May 22, 1:25 AM PDT · 17290 days ago · 0 km deep · 84 km away
45. 1.58 km WNW of Hopland, CaliforniaThu, May 24, 1:39 AM PDT · 17288 days ago · 2 km deep · 53 km away
46. 1.89 km W of Cobb, CaliforniaFri, May 25, 5:50 AM PDT · 17287 days ago · 0 km deep · 83 km away
47. 1.923 km ENE of Potter Valley, CaliforniaFri, May 25, 9:29 AM PDT · 17287 days ago · 9 km deep · 39 km away

Before

1. 2.319 km NE of Upper Lake, CaliforniaSun, Mar 25, 10:40 AM PST · 17348 days ago · 8 km deep · 49 km away
2. 1.88 km NNE of Hopland, CaliforniaSun, Mar 25, 4:54 AM PST · 17348 days ago · 0 km deep · 50 km away
3. 1.98 km NNE of Hopland, CaliforniaSun, Mar 25, 4:50 AM PST · 17348 days ago · 2 km deep · 51 km away
4. 2.16 km W of Cobb, CaliforniaSat, Mar 24, 6:54 PM PST · 17349 days ago · 4 km deep · 84 km away
5. 1.65 km ESE of Clearlake Oaks, CaliforniaSat, Mar 24, 9:37 AM PST · 17349 days ago · 2 km deep · 78 km away
6. 2.04 km SE of Benbow, CaliforniaSat, Mar 24, 9:07 AM PST · 17349 days ago · 16 km deep · 74 km away
7. 2.06 km N of Cloverdale, CaliforniaThu, Mar 22, 6:12 AM PST · 17351 days ago · 5 km deep · 71 km away
8. 1.96 km N of Cloverdale, CaliforniaThu, Mar 22, 6:06 AM PST · 17351 days ago · 6 km deep · 71 km away
9. 1.74 km WSW of Cobb, CaliforniaWed, Mar 21, 5:59 PM PST · 17352 days ago · 1 km deep · 87 km away
10. 1.99 km SSE of Hopland, CaliforniaWed, Mar 21, 4:31 PM PST · 17352 days ago · 5 km deep · 67 km away
11. 2.314 km SE of Alderpoint, CaliforniaTue, Mar 20, 1:18 AM PST · 17353 days ago · 12 km deep · 72 km away
12. 2.86 km W of Cobb, CaliforniaMon, Mar 19, 2:59 AM PST · 17354 days ago · 3 km deep · 85 km away
13. 2.16 km WSW of Cobb, CaliforniaMon, Mar 19, 2:52 AM PST · 17354 days ago · 1 km deep · 86 km away
14. 2.13 km ESE of Calpella, CaliforniaSat, Mar 17, 8:05 PM PST · 17356 days ago · 6 km deep · 30 km away
15. 2.17 km W of Cobb, CaliforniaSat, Mar 17, 1:18 PM PST · 17356 days ago · 3 km deep · 84 km away
16. 2.110 km NNE of Brooktrails, CaliforniaSat, Mar 17, 11:06 AM PST · 17356 days ago · 8 km deep · 7 km away
17. 2.04 km WSW of Cobb, CaliforniaFri, Mar 16, 7:29 PM PST · 17357 days ago · 4 km deep · 87 km away
18. 1.916 km E of Potter Valley, CaliforniaFri, Mar 16, 2:27 PM PST · 17357 days ago · 2 km deep · 36 km away
19. 2.38 km ENE of Lower Lake, CaliforniaTue, Mar 13, 10:19 AM PST · 17360 days ago · 9 km deep · 91 km away
20. 2.14 km WSW of Cobb, CaliforniaTue, Mar 13, 8:23 AM PST · 17360 days ago · 1 km deep · 87 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1045171. Read Tue, Sep 22, 2026, 4:50 PM UTC.