M1.7 earthquake 9 km SW of Ridgemark, California

Magnitude

1.7 (md), micro

Local time

Thu, Apr 1, 1982, 12:02 AM PST

UTC

1982-04-01 08:02:49 UTC

Depth

6.9 km (4.3 mi), shallow

Epicenter

36.746° N, 121.435° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.3 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.17

Depth from

From location

Station coverage gap

34°

Stations used

42

• Ridgemark, CaliforniaPopulation 3,016. Forecast10 kmSW
• Hollister, CaliforniaPopulation 37,462. Forecast12 kmSSW
• Salinas, CaliforniaPopulation 157,380. Forecast21 kmENE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast416 kmNW

After

1. 2.522 km NNE of Soledad, CaliforniaThu, Apr 1, 10:58 AM PST · 16245 days ago · 5 km deep · 26 km away
2. 1.922 km SSE of Tres Pinos, CaliforniaThu, Apr 1, 11:05 AM PST · 16245 days ago · 5 km deep · 26 km away
3. 1.96 km WSW of Gilroy, CaliforniaThu, Apr 1, 11:12 AM PST · 16245 days ago · 6 km deep · 32 km away
4. 1.66 km E of East Foothills, CaliforniaThu, Apr 1, 7:51 PM PST · 16244 days ago · 5 km deep · 75 km away
5. 1.910 km ESE of Gilroy, CaliforniaFri, Apr 2, 1:53 PM PST · 16244 days ago · 2 km deep · 25 km away
6. 1.69 km N of Hollister, CaliforniaFri, Apr 2, 6:21 PM PST · 16244 days ago · 8 km deep · 22 km away
7. 1.52 km WNW of San Jose, CaliforniaFri, Apr 2, 6:55 PM PST · 16244 days ago · 12 km deep · 80 km away
8. 1.623 km ENE of Soledad, CaliforniaSun, Apr 4, 5:16 AM PST · 16242 days ago · 5 km deep · 41 km away
9. 1.623 km ENE of Soledad, CaliforniaSun, Apr 4, 2:02 PM PST · 16242 days ago · 5 km deep · 41 km away
10. 1.924 km ENE of Greenfield, CaliforniaSun, Apr 4, 3:34 PM PST · 16242 days ago · 6 km deep · 52 km away
11. 1.64 km ENE of Tres Pinos, CaliforniaSun, Apr 4, 3:50 PM PST · 16242 days ago · 4 km deep · 16 km away
12. 2.43 km ENE of Tres Pinos, CaliforniaSun, Apr 4, 3:52 PM PST · 16242 days ago · 4 km deep · 15 km away
13. 2.18 km SSW of Tres Pinos, CaliforniaMon, Apr 5, 8:31 PM PST · 16240 days ago · 4 km deep · 8 km away
14. 1.722 km NE of Soledad, CaliforniaTue, Apr 6, 12:04 AM PST · 16240 days ago · 2 km deep · 28 km away
15. 2.123 km ENE of Soledad, CATue, Apr 6, 7:19 PM PST · 16240 days ago · 2 km deep · 38 km away
16. 1.625 km NE of Soledad, CaliforniaWed, Apr 7, 6:56 AM PST · 16239 days ago · 6 km deep · 36 km away
17. 2.316 km E of East Foothills, CaliforniaWed, Apr 7, 12:24 PM PST · 16239 days ago · 6 km deep · 73 km away
18. 1.716 km E of East Foothills, CaliforniaWed, Apr 7, 12:47 PM PST · 16239 days ago · 6 km deep · 73 km away
19. 1.723 km NE of King City, CaliforniaWed, Apr 7, 1:32 PM PST · 16239 days ago · 4 km deep · 65 km away
20. 1.727 km ESE of Tres Pinos, CaliforniaThu, Apr 8, 1:02 PM PST · 16238 days ago · 1 km deep · 36 km away
21. 2.09 km NNE of Milpitas, CaliforniaFri, Apr 9, 12:36 AM PST · 16237 days ago · 9 km deep · 92 km away
22. 2.19 km NE of Milpitas, CaliforniaFri, Apr 9, 6:11 AM PST · 16237 days ago · 10 km deep · 91 km away
23. 2.710 km WSW of Ridgemark, CaliforniaFri, Apr 9, 8:28 AM PST · 16237 days ago · 6 km deep · 3 km away
24. 1.69 km NNE of Milpitas, CaliforniaFri, Apr 9, 12:00 PM PST · 16237 days ago · 10 km deep · 92 km away
25. 1.99 km NNE of Milpitas, CaliforniaFri, Apr 9, 2:22 PM PST · 16237 days ago · 9 km deep · 92 km away
26. 2.79 km ENE of Gilroy, CaliforniaSat, Apr 10, 11:42 AM PST · 16236 days ago · 9 km deep · 33 km away
27. 2.819 km ESE of Tres Pinos, CaliforniaSat, Apr 10, 11:47 AM PST · 16236 days ago · 7 km deep · 29 km away
28. 2.04 km SSE of San Juan Bautista, CaliforniaSat, Apr 10, 12:47 PM PST · 16236 days ago · 7 km deep · 11 km away
29. 3.416 km SSE of Tres Pinos, CaliforniaSat, Apr 10, 9:30 PM PST · 16235 days ago · 10 km deep · 18 km away
30. 1.824 km NE of Greenfield, CaliforniaSat, Apr 10, 10:17 PM PST · 16235 days ago · 7 km deep · 47 km away
31. 2.96 km E of East Foothills, CaliforniaSun, Apr 11, 12:08 AM PST · 16235 days ago · 7 km deep · 77 km away
32. 2.132 km SE of Tres Pinos, CaliforniaSun, Apr 11, 2:45 AM PST · 16235 days ago · 23 km deep · 39 km away
33. 1.76 km ENE of East Foothills, CaliforniaSun, Apr 11, 7:09 AM PST · 16235 days ago · 9 km deep · 79 km away
34. 1.912 km ESE of Livermore, CaliforniaSun, Apr 11, 1:38 PM PST · 16235 days ago · 7 km deep · 100 km away
35. 2.69 km ENE of Gilroy, CaliforniaSun, Apr 11, 8:35 PM PST · 16234 days ago · 9 km deep · 32 km away
36. 1.87 km S of Merced, CaliforniaMon, Apr 12, 2:13 AM PST · 16234 days ago · 19 km deep · 100 km away
37. 2.227 km WSW of Mendota, CaliforniaMon, Apr 12, 5:07 AM PST · 16234 days ago · 9 km deep · 68 km away
38. 2.88 km ENE of Patterson, CaliforniaMon, Apr 12, 11:31 PM PST · 16233 days ago · 12 km deep · 90 km away
39. 3.03 km WSW of San Juan Bautista, CaliforniaTue, Apr 13, 6:09 AM PST · 16233 days ago · 7 km deep · 16 km away
40. 1.75 km SSW of Gilroy, CaliforniaTue, Apr 13, 7:37 PM PST · 16233 days ago · 5 km deep · 28 km away
41. 2.122 km WNW of Diablo Grande, CaliforniaWed, Apr 14, 5:50 AM PST · 16232 days ago · 6 km deep · 78 km away
42. 1.921 km NE of Soledad, CaliforniaWed, Apr 14, 10:54 AM PST · 16232 days ago · 7 km deep · 36 km away
43. 1.526 km SE of Tres Pinos, CaliforniaWed, Apr 14, 5:37 PM PST · 16232 days ago · 9 km deep · 32 km away
44. 1.93 km SSE of San Juan Bautista, CaliforniaFri, Apr 16, 4:33 PM PST · 16230 days ago · 3 km deep · 11 km away
45. 1.64 km SE of Prunedale, CaliforniaSun, Apr 18, 2:21 PM PST · 16228 days ago · 14 km deep · 18 km away
46. 1.63 km SE of San Ardo, CaliforniaSun, Apr 18, 9:22 PM PST · 16227 days ago · 9 km deep · 97 km away
47. 2.49 km SW of Ridgemark, CaliforniaTue, Apr 20, 5:04 AM PST · 16226 days ago · 6 km deep · 2 km away
48. 1.810 km S of Tres Pinos, CaliforniaTue, Apr 20, 12:08 PM PST · 16226 days ago · 4 km deep · 11 km away
49. 1.910 km SE of Livermore, CaliforniaWed, Apr 21, 11:18 AM PST · 16225 days ago · 10 km deep · 100 km away
50. 1.56 km NNE of East Foothills, CaliforniaThu, Apr 22, 12:22 AM PST · 16224 days ago · 5 km deep · 83 km away
51. 1.816 km E of East Foothills, CaliforniaThu, Apr 22, 3:03 AM PST · 16224 days ago · 8 km deep · 73 km away
52. 1.524 km NE of King City, CaliforniaThu, Apr 22, 6:27 PM PST · 16224 days ago · 1 km deep · 58 km away
53. 2.924 km NE of King City, CaliforniaFri, Apr 23, 4:56 AM PST · 16223 days ago · 4 km deep · 64 km away
54. 2.917 km E of East Foothills, CaliforniaFri, Apr 23, 11:55 AM PST · 16223 days ago · 7 km deep · 73 km away
55. 1.79 km NNW of Hollister, CaliforniaFri, Apr 23, 11:59 AM PST · 16223 days ago · 5 km deep · 21 km away
56. 3.12 km S of Hollister, CaliforniaSat, Apr 24, 6:35 AM PST · 16222 days ago · 9 km deep · 10 km away
57. 3.16 km NE of East Foothills, CaliforniaSat, Apr 24, 6:59 PM PST · 16222 days ago · 8 km deep · 80 km away
58. 1.96 km ENE of East Foothills, CaliforniaSat, Apr 24, 7:01 PM PST · 16222 days ago · 9 km deep · 79 km away
59. 1.723 km NE of San Ardo, CaliforniaSun, Apr 25, 7:10 AM PDT · 16221 days ago · 7 km deep · 87 km away
60. 2.315 km SSE of Tres Pinos, CaliforniaMon, Apr 26, 12:19 PM PDT · 16220 days ago · 12 km deep · 20 km away

The first 60 of 146.

Before

1. 2.39 km ESE of East Foothills, CaliforniaWed, Mar 31, 10:29 PM PST · 16245 days ago · 7 km deep · 72 km away
2. 1.624 km ENE of San Lucas, CaliforniaWed, Mar 31, 8:51 AM PST · 16246 days ago · 9 km deep · 80 km away
3. 1.619 km SSE of Tres Pinos, CaliforniaMon, Mar 29, 6:04 AM PST · 16248 days ago · 7 km deep · 22 km away
4. 1.727 km WSW of Three Rocks, CaliforniaSun, Mar 28, 11:08 PM PST · 16248 days ago · -1 km deep · 77 km away
5. 1.711 km NNE of Tres Pinos, CaliforniaSun, Mar 28, 4:36 PM PST · 16249 days ago · 7 km deep · 22 km away
6. 1.731 km WSW of Three Rocks, CaliforniaSat, Mar 27, 11:08 PM PST · 16249 days ago · 13 km deep · 76 km away
7. 1.630 km WSW of Three Rocks, CaliforniaSat, Mar 27, 9:58 PM PST · 16249 days ago · 12 km deep · 76 km away
8. 1.99 km NNE of San Juan Bautista, CaliforniaSat, Mar 27, 5:06 PM PST · 16250 days ago · 3 km deep · 22 km away
9. 1.64 km ENE of Hollister, CaliforniaSat, Mar 27, 3:10 PM PST · 16250 days ago · 2 km deep · 16 km away
10. 2.99 km NNE of San Juan Bautista, CaliforniaSat, Mar 27, 12:05 AM PST · 16250 days ago · 4 km deep · 21 km away
11. 2.75 km N of Morgan Hill, CaliforniaFri, Mar 26, 9:38 AM PST · 16251 days ago · 6 km deep · 52 km away
12. 2.021 km NE of Soledad, CaliforniaFri, Mar 26, 6:24 AM PST · 16251 days ago · 6 km deep · 33 km away
13. 2.124 km NE of Greenfield, CaliforniaFri, Mar 26, 2:08 AM PST · 16251 days ago · 5 km deep · 46 km away
14. 2.64 km NE of Interlaken, CaliforniaFri, Mar 26, 1:23 AM PST · 16251 days ago · 7 km deep · 35 km away
15. 2.54 km NE of Interlaken, CaliforniaFri, Mar 26, 1:18 AM PST · 16251 days ago · 7 km deep · 36 km away
16. 3.021 km NE of Soledad, CaliforniaWed, Mar 24, 12:52 AM PST · 16253 days ago · 2 km deep · 32 km away
17. 2.423 km NE of San Lucas, CaliforniaTue, Mar 23, 10:01 PM PST · 16253 days ago · 6 km deep · 75 km away
18. 2.03 km SW of San Juan Bautista, CaliforniaTue, Mar 23, 6:54 PM PST · 16254 days ago · 9 km deep · 15 km away
19. 2.524 km NE of King City, CaliforniaTue, Mar 23, 3:56 PM PST · 16254 days ago · 6 km deep · 59 km away
20. 2.117 km NE of East Foothills, CaliforniaTue, Mar 23, 2:54 AM PST · 16254 days ago · 7 km deep · 87 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1073390. Read Tue, Sep 22, 2026, 3:13 PM UTC.