M1.8 earthquake 1 km E of Prunedale, California

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Apr 12, 1991, 5:27 AM PDT

UTC

1991-04-12 12:27:41 UTC

Depth

10.2 km (6.3 mi), shallow

Epicenter

36.776° N, 121.648° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.1 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.18

Depth from

From location

Station coverage gap

62°

Stations used

69

• Prunedale, CaliforniaPopulation 17,560. Forecast2 kmE
• Salinas, CaliforniaPopulation 157,380. Forecast11 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast432 kmNW

After

1. 1.51 km E of Prunedale, CaliforniaFri, Apr 12, 5:28 AM PDT · 12960 days ago · 10 km deep · 0 km away
2. 2.01 km E of Prunedale, CaliforniaFri, Apr 12, 8:09 PM PDT · 12959 days ago · 10 km deep · 0 km away
3. 1.725 km SW of Firebaugh, CaliforniaSat, Apr 13, 8:01 AM PDT · 12959 days ago · 0 km deep · 88 km away
4. 2.322 km NNE of Soledad, CaliforniaSat, Apr 13, 5:44 PM PDT · 12958 days ago · 5 km deep · 45 km away
5. 1.721 km NE of Soledad, CaliforniaSun, Apr 14, 8:36 PM PDT · 12957 days ago · 3 km deep · 50 km away
6. 1.62 km E of Corralitos, CaliforniaMon, Apr 15, 4:42 AM PDT · 12957 days ago · 15 km deep · 26 km away
7. 2.79 km NE of Gilroy, CaliforniaMon, Apr 15, 8:17 AM PDT · 12957 days ago · 9 km deep · 34 km away
8. 2.417 km SSE of Livermore, CaliforniaMon, Apr 15, 11:16 AM PDT · 12957 days ago · 7 km deep · 84 km away
9. 3.13 km S of Loyola, CaliforniaMon, Apr 15, 5:56 PM PDT · 12956 days ago · 5 km deep · 73 km away
10. 1.82 km WSW of San Juan Bautista, CaliforniaWed, Apr 17, 8:34 AM PDT · 12955 days ago · 5 km deep · 10 km away
11. 2.0Northern CaliforniaThu, Apr 18, 12:09 AM PDT · 12954 days ago · 7 km deep · 61 km away
12. 1.921 km NE of Soledad, CaliforniaThu, Apr 18, 9:02 AM PDT · 12954 days ago · 5 km deep · 48 km away
13. 1.624 km NE of Greenfield, CaliforniaThu, Apr 18, 2:49 PM PDT · 12953 days ago · 7 km deep · 62 km away
14. 2.83 km ESE of Aromas, CaliforniaThu, Apr 18, 2:59 PM PDT · 12953 days ago · 5 km deep · 12 km away
15. 1.65 km SSW of Gilroy, CaliforniaFri, Apr 19, 2:49 AM PDT · 12953 days ago · 4 km deep · 21 km away
16. 1.610 km S of Tres Pinos, CaliforniaFri, Apr 19, 5:47 AM PDT · 12953 days ago · 6 km deep · 29 km away
17. 4.111 km ENE of East Foothills, CaliforniaSat, Apr 20, 12:41 PM PDT · 12952 days ago · 7 km deep · 71 km away
18. 2.411 km ENE of East Foothills, CaliforniaSat, Apr 20, 12:43 PM PDT · 12952 days ago · 3 km deep · 71 km away
19. 2.111 km ENE of East Foothills, CaliforniaSat, Apr 20, 12:43 PM PDT · 12952 days ago · 5 km deep · 71 km away
20. 1.612 km ENE of East Foothills, CaliforniaSat, Apr 20, 12:51 PM PDT · 12951 days ago · 5 km deep · 71 km away
21. 1.75 km ESE of Interlaken, CaliforniaSat, Apr 20, 4:59 PM PDT · 12951 days ago · 10 km deep · 18 km away
22. 2.421 km NE of Soledad, CaliforniaSat, Apr 20, 7:46 PM PDT · 12951 days ago · 5 km deep · 52 km away
23. 1.720 km SE of Big Sur, CaliforniaSun, Apr 21, 12:15 AM PDT · 12951 days ago · 16 km deep · 69 km away
24. 1.712 km ENE of East Foothills, CaliforniaSun, Apr 21, 5:27 AM PDT · 12951 days ago · 5 km deep · 71 km away
25. 1.98 km SSW of Tres Pinos, CaliforniaSun, Apr 21, 5:47 AM PDT · 12951 days ago · 3 km deep · 26 km away
26. 1.812 km ENE of East Foothills, CaliforniaSun, Apr 21, 12:51 PM PDT · 12950 days ago · 5 km deep · 71 km away
27. 1.619 km SSE of Tres Pinos, CaliforniaSun, Apr 21, 5:12 PM PDT · 12950 days ago · 8 km deep · 41 km away
28. 2.022 km ENE of Soledad, CaliforniaSun, Apr 21, 6:47 PM PDT · 12950 days ago · 2 km deep · 55 km away
29. 2.111 km ENE of East Foothills, CaliforniaMon, Apr 22, 3:25 PM PDT · 12949 days ago · 5 km deep · 72 km away
30. 2.28 km SSW of Tres Pinos, CaliforniaMon, Apr 22, 4:40 PM PDT · 12949 days ago · 2 km deep · 26 km away
31. 2.311 km ENE of East Foothills, CaliforniaMon, Apr 22, 7:22 PM PDT · 12949 days ago · 6 km deep · 71 km away
32. 2.3Northern CaliforniaTue, Apr 23, 1:12 AM PDT · 12949 days ago · 11 km deep · 67 km away
33. 1.911 km ENE of East Foothills, CaliforniaTue, Apr 23, 1:53 PM PDT · 12948 days ago · 5 km deep · 71 km away
34. 1.76 km ESE of East Foothills, CaliforniaWed, Apr 24, 1:19 AM PDT · 12948 days ago · 2 km deep · 66 km away
35. 1.521 km NE of Soledad, CaliforniaWed, Apr 24, 1:02 PM PDT · 12947 days ago · 7 km deep · 52 km away
36. 1.82 km ENE of Aromas, CaliforniaThu, Apr 25, 1:53 AM PDT · 12947 days ago · 5 km deep · 13 km away
37. 2.321 km NE of Soledad, CaliforniaThu, Apr 25, 2:38 AM PDT · 12947 days ago · 3 km deep · 49 km away
38. 1.76 km NNE of East Foothills, CaliforniaThu, Apr 25, 2:47 AM PDT · 12947 days ago · 5 km deep · 74 km away
39. 1.93 km SSW of Loyola, CaliforniaThu, Apr 25, 5:15 AM PDT · 12947 days ago · 5 km deep · 73 km away
40. 1.93 km SSW of Loyola, CaliforniaThu, Apr 25, 5:37 AM PDT · 12947 days ago · 5 km deep · 74 km away
41. 1.612 km ENE of East Foothills, CaliforniaThu, Apr 25, 8:46 AM PDT · 12947 days ago · 4 km deep · 71 km away
42. 2.522 km ENE of Soledad, CaliforniaThu, Apr 25, 6:12 PM PDT · 12946 days ago · 3 km deep · 55 km away
43. 1.913 km S of Tres Pinos, CaliforniaFri, Apr 26, 3:19 PM PDT · 12945 days ago · 4 km deep · 34 km away
44. 1.823 km NE of King City, CaliforniaSat, Apr 27, 2:38 PM PDT · 12944 days ago · 4 km deep · 79 km away
45. 1.813 km S of Tres Pinos, CaliforniaSat, Apr 27, 11:09 PM PDT · 12944 days ago · 4 km deep · 34 km away
46. 1.820 km SSE of Tres Pinos, CaliforniaSun, Apr 28, 7:09 AM PDT · 12944 days ago · 6 km deep · 42 km away
47. 3.214 km N of Morgan Hill, CaliforniaSun, Apr 28, 2:53 PM PDT · 12943 days ago · 6 km deep · 53 km away
48. 2.22 km E of Aromas, CaliforniaSun, Apr 28, 3:49 PM PDT · 12943 days ago · 7 km deep · 13 km away
49. 2.216 km WSW of Gustine, CaliforniaTue, Apr 30, 5:16 PM PDT · 12941 days ago · 0 km deep · 62 km away
50. 3.73 km NNW of Day Valley, CaliforniaWed, May 1, 3:09 AM PDT · 12941 days ago · 13 km deep · 39 km away
51. 2.49 km SW of Tres Pinos, CaliforniaWed, May 1, 4:57 AM PDT · 12941 days ago · 7 km deep · 24 km away
52. 1.916 km E of Seven Trees, CaliforniaWed, May 1, 12:37 PM PDT · 12941 days ago · 6 km deep · 56 km away
53. 1.616 km E of Seven Trees, CaliforniaWed, May 1, 3:58 PM PDT · 12940 days ago · 5 km deep · 56 km away
54. 1.96 km WNW of Lexington Hills, CaliforniaWed, May 1, 8:51 PM PDT · 12940 days ago · 14 km deep · 58 km away
55. 1.522 km ENE of Soledad, CaliforniaThu, May 2, 3:29 AM PDT · 12940 days ago · 3 km deep · 55 km away
56. 1.85 km ESE of Aromas, CaliforniaThu, May 2, 4:18 PM PDT · 12939 days ago · 6 km deep · 11 km away
57. 2.714 km N of Morgan Hill, CaliforniaFri, May 3, 1:30 AM PDT · 12939 days ago · 4 km deep · 54 km away
58. 1.83 km NE of Amesti, CaliforniaFri, May 3, 9:46 PM PDT · 12938 days ago · 14 km deep · 25 km away
59. 2.34 km SSE of San Juan Bautista, CaliforniaSat, May 4, 12:32 AM PDT · 12938 days ago · 4 km deep · 12 km away
60. 1.95 km WNW of San Juan Bautista, CaliforniaSat, May 4, 10:24 PM PDT · 12937 days ago · 7 km deep · 11 km away

The first 60 of 152.

Before

1. 1.817 km SSE of Big Sur, CaliforniaWed, Apr 10, 4:41 PM PDT · 12961 days ago · 16 km deep · 73 km away
2. 2.620 km SE of Big Sur, CaliforniaWed, Apr 10, 4:39 PM PDT · 12961 days ago · 14 km deep · 72 km away
3. 1.98 km S of Livermore, CaliforniaWed, Apr 10, 1:01 PM PDT · 12961 days ago · 5 km deep · 92 km away
4. 2.421 km NE of Soledad, CaliforniaWed, Apr 10, 3:44 AM PDT · 12962 days ago · 6 km deep · 48 km away
5. 1.61 km E of Prunedale, CaliforniaTue, Apr 9, 1:00 PM PDT · 12962 days ago · 10 km deep · 0 km away
6. 1.819 km SE of Big Sur, CaliforniaTue, Apr 9, 5:18 AM PDT · 12963 days ago · 13 km deep · 71 km away
7. 1.720 km SE of Big Sur, CaliforniaTue, Apr 9, 3:42 AM PDT · 12963 days ago · 4 km deep · 68 km away
8. 2.219 km NNE of Soledad, CaliforniaTue, Apr 9, 1:20 AM PDT · 12963 days ago · 12 km deep · 45 km away
9. 1.519 km NNE of Soledad, CaliforniaTue, Apr 9, 1:15 AM PDT · 12963 days ago · 12 km deep · 45 km away
10. 1.917 km ESE of Big Sur, CaliforniaTue, Apr 9, 12:29 AM PDT · 12963 days ago · 16 km deep · 65 km away
11. 2.120 km SE of Big Sur, CaliforniaMon, Apr 8, 11:32 PM PDT · 12963 days ago · 18 km deep · 72 km away
12. 2.120 km SE of Big Sur, CaliforniaMon, Apr 8, 8:29 PM PDT · 12963 days ago · 17 km deep · 72 km away
13. 1.719 km NNE of Soledad, CaliforniaMon, Apr 8, 7:28 PM PDT · 12963 days ago · 12 km deep · 45 km away
14. 2.219 km NNE of Soledad, CaliforniaMon, Apr 8, 7:27 PM PDT · 12963 days ago · 12 km deep · 45 km away
15. 1.921 km SE of Big Sur, CaliforniaMon, Apr 8, 5:48 PM PDT · 12963 days ago · 12 km deep · 72 km away
16. 2.519 km SE of Big Sur, CaliforniaMon, Apr 8, 5:21 PM PDT · 12963 days ago · 14 km deep · 70 km away
17. 1.52 km E of Prunedale, CaliforniaMon, Apr 8, 2:00 PM PDT · 12963 days ago · 9 km deep · 0 km away
18. 2.41 km E of Prunedale, CaliforniaMon, Apr 8, 1:57 PM PDT · 12963 days ago · 10 km deep · 0 km away
19. 1.711 km ESE of East Foothills, CaliforniaMon, Apr 8, 6:56 AM PDT · 12964 days ago · 6 km deep · 62 km away
20. 2.121 km NE of Soledad, CaliforniaSun, Apr 7, 1:41 PM PDT · 12964 days ago · 3 km deep · 50 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc210441. Read Mon, Oct 5, 2026, 7:16 AM UTC.