M1.8 earthquake 2 km SW of Ridgemark, California

Magnitude

1.8 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Fri, Jul 6, 1984, 11:12 PM PDT

UTC

1984-07-07 06:12:07 UTC

Depth

8.1 km (5.0 mi), shallow

Epicenter

36.794° N, 121.383° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.5 km in depth

Magnitude uncertainty

±0.15

Depth from

From location

Station coverage gap

44°

Stations used

25

• Ridgemark, CaliforniaPopulation 3,016. Forecast3 kmSW
• Hollister, CaliforniaPopulation 37,462. Forecast7 kmSSE
• Salinas, CaliforniaPopulation 157,380. Forecast27 kmENE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast417 kmNW

After

1. 3.13 km N of Morgan Hill, CaliforniaSat, Jul 7, 12:25 AM PDT · 15429 days ago · 4 km deep · 48 km away
2. 2.510 km ESE of East Foothills, CaliforniaSat, Jul 7, 6:13 AM PDT · 15429 days ago · 8 km deep · 68 km away
3. 2.610 km ESE of East Foothills, CaliforniaSat, Jul 7, 6:13 AM PDT · 15429 days ago · 8 km deep · 68 km away
4. 1.910 km ESE of East Foothills, CaliforniaSat, Jul 7, 7:36 AM PDT · 15429 days ago · 7 km deep · 68 km away
5. 1.731 km WNW of Coalinga, CaliforniaSat, Jul 7, 7:48 AM PDT · 15429 days ago · 14 km deep · 87 km away
6. 2.86 km NNE of Morgan Hill, CaliforniaSat, Jul 7, 11:02 AM PDT · 15429 days ago · 4 km deep · 49 km away
7. 2.315 km E of Seven Trees, CaliforniaSat, Jul 7, 5:55 PM PDT · 15429 days ago · 6 km deep · 60 km away
8. 2.015 km E of Seven Trees, CaliforniaSat, Jul 7, 5:59 PM PDT · 15429 days ago · 6 km deep · 59 km away
9. 3.111 km NNE of Morgan Hill, CaliforniaSat, Jul 7, 11:56 PM PDT · 15428 days ago · 5 km deep · 53 km away
10. 3.17 km E of East Foothills, CaliforniaSun, Jul 8, 5:21 AM PDT · 15428 days ago · 7 km deep · 73 km away
11. 1.625 km NE of Soledad, CaliforniaSun, Jul 8, 1:27 PM PDT · 15428 days ago · 6 km deep · 30 km away
12. 2.715 km NNE of Morgan Hill, CaliforniaSun, Jul 8, 3:06 PM PDT · 15428 days ago · 3 km deep · 55 km away
13. 1.515 km N of Morgan Hill, CaliforniaSun, Jul 8, 10:25 PM PDT · 15427 days ago · 7 km deep · 58 km away
14. 2.515 km E of Seven Trees, CaliforniaMon, Jul 9, 4:13 AM PDT · 15427 days ago · 6 km deep · 60 km away
15. 2.115 km E of Seven Trees, CaliforniaMon, Jul 9, 5:29 AM PDT · 15427 days ago · 9 km deep · 60 km away
16. 1.99 km NW of Hollister, CaliforniaMon, Jul 9, 11:42 PM PDT · 15426 days ago · 6 km deep · 16 km away
17. 1.523 km ENE of Soledad, CaliforniaTue, Jul 10, 4:37 AM PDT · 15426 days ago · 4 km deep · 43 km away
18. 1.615 km N of Morgan Hill, CaliforniaTue, Jul 10, 7:28 AM PDT · 15426 days ago · 6 km deep · 58 km away
19. 1.511 km NNE of Morgan Hill, CaliforniaTue, Jul 10, 9:23 AM PDT · 15426 days ago · 5 km deep · 53 km away
20. 1.518 km E of Seven Trees, CaliforniaTue, Jul 10, 12:11 PM PDT · 15426 days ago · 6 km deep · 61 km away
21. 1.84 km WNW of San Ardo, CaliforniaTue, Jul 10, 2:03 PM PDT · 15426 days ago · 5 km deep · 93 km away
22. 2.913 km N of Morgan Hill, CaliforniaTue, Jul 10, 4:01 PM PDT · 15426 days ago · 3 km deep · 55 km away
23. 1.517 km N of Morgan Hill, CaliforniaTue, Jul 10, 4:23 PM PDT · 15426 days ago · 2 km deep · 59 km away
24. 2.412 km N of Morgan Hill, CaliforniaTue, Jul 10, 5:25 PM PDT · 15426 days ago · 3 km deep · 55 km away
25. 3.220 km WSW of Three Rocks, CaliforniaTue, Jul 10, 8:31 PM PDT · 15426 days ago · 14 km deep · 79 km away
26. 1.919 km WSW of Three Rocks, CaliforniaTue, Jul 10, 9:11 PM PDT · 15426 days ago · 11 km deep · 79 km away
27. 1.78 km E of Sunol, CaliforniaWed, Jul 11, 6:17 AM PDT · 15425 days ago · 0 km deep · 97 km away
28. 1.914 km E of Seven Trees, CaliforniaWed, Jul 11, 10:26 AM PDT · 15425 days ago · 6 km deep · 62 km away
29. 1.79 km ENE of Morgan Hill, CaliforniaWed, Jul 11, 3:02 PM PDT · 15425 days ago · 5 km deep · 43 km away
30. 1.712 km S of Tres Pinos, CaliforniaWed, Jul 11, 7:34 PM PDT · 15425 days ago · 5 km deep · 15 km away
31. 1.613 km N of Morgan Hill, CaliforniaWed, Jul 11, 8:41 PM PDT · 15425 days ago · 5 km deep · 56 km away
32. 2.012 km S of Tres Pinos, CaliforniaThu, Jul 12, 2:20 AM PDT · 15424 days ago · 5 km deep · 15 km away
33. 2.114 km N of Morgan Hill, CaliforniaThu, Jul 12, 3:48 AM PDT · 15424 days ago · 3 km deep · 57 km away
34. 1.614 km NNE of Morgan Hill, CaliforniaThu, Jul 12, 7:27 AM PDT · 15424 days ago · 3 km deep · 55 km away
35. 2.114 km N of Morgan Hill, CaliforniaThu, Jul 12, 10:00 AM PDT · 15424 days ago · 6 km deep · 56 km away
36. 3.19 km ENE of East Foothills, CaliforniaThu, Jul 12, 1:07 PM PDT · 15424 days ago · 5 km deep · 76 km away
37. 1.926 km W of Coalinga, CaliforniaThu, Jul 12, 6:29 PM PDT · 15424 days ago · 3 km deep · 96 km away
38. 3.37 km ENE of Sunol, CaliforniaFri, Jul 13, 5:08 AM PDT · 15423 days ago · 6 km deep · 99 km away
39. 2.06 km ENE of Sunol, CaliforniaFri, Jul 13, 5:21 AM PDT · 15423 days ago · 0 km deep · 98 km away
40. 1.823 km NE of Soledad, CaliforniaFri, Jul 13, 11:41 AM PDT · 15423 days ago · 2 km deep · 36 km away
41. 2.524 km NE of King City, CaliforniaSat, Jul 14, 1:27 PM PDT · 15422 days ago · 0 km deep · 59 km away
42. 1.59 km NE of San Martin, CaliforniaSat, Jul 14, 10:22 PM PDT · 15421 days ago · 5 km deep · 43 km away
43. 1.616 km SW of Three Rocks, CaliforniaSun, Jul 15, 12:30 PM PDT · 15421 days ago · 6 km deep · 88 km away
44. 1.813 km N of Morgan Hill, CaliforniaSun, Jul 15, 5:38 PM PDT · 15421 days ago · 5 km deep · 56 km away
45. 1.711 km ESE of East Foothills, CaliforniaSun, Jul 15, 8:51 PM PDT · 15421 days ago · 7 km deep · 66 km away
46. 1.614 km N of Morgan Hill, CaliforniaSun, Jul 15, 10:25 PM PDT · 15420 days ago · 5 km deep · 56 km away
47. 2.63 km SSE of San Juan Bautista, CaliforniaMon, Jul 16, 6:51 AM PDT · 15420 days ago · 4 km deep · 13 km away
48. 1.72 km SSW of Hollister, CaliforniaMon, Jul 16, 8:06 AM PDT · 15420 days ago · 8 km deep · 5 km away
49. 2.813 km N of Morgan Hill, CaliforniaMon, Jul 16, 11:50 AM PDT · 15420 days ago · 5 km deep · 56 km away
50. 1.524 km NE of Greenfield, CaliforniaTue, Jul 17, 6:18 AM PDT · 15419 days ago · 5 km deep · 46 km away
51. 2.014 km E of Seven Trees, CaliforniaTue, Jul 17, 9:24 AM PDT · 15419 days ago · 3 km deep · 61 km away
52. 2.515 km E of Seven Trees, CaliforniaTue, Jul 17, 10:53 AM PDT · 15419 days ago · 5 km deep · 60 km away
53. 1.616 km WSW of Soledad, CaliforniaTue, Jul 17, 3:53 PM PDT · 15419 days ago · 8 km deep · 49 km away
54. 1.815 km E of Seven Trees, CaliforniaTue, Jul 17, 7:45 PM PDT · 15419 days ago · 5 km deep · 59 km away
55. 2.322 km NE of Soledad, CaliforniaTue, Jul 17, 9:55 PM PDT · 15418 days ago · 3 km deep · 29 km away
56. 2.58 km NE of Morgan Hill, CaliforniaWed, Jul 18, 6:04 AM PDT · 15418 days ago · 2 km deep · 47 km away
57. 1.78 km S of Livermore, CaliforniaWed, Jul 18, 6:39 AM PDT · 15418 days ago · 3 km deep · 96 km away
58. 1.69 km E of San Martin, CaliforniaWed, Jul 18, 8:13 AM PDT · 15418 days ago · 8 km deep · 35 km away
59. 1.613 km N of Morgan Hill, CaliforniaWed, Jul 18, 12:57 PM PDT · 15418 days ago · 3 km deep · 55 km away
60. 1.98 km NE of Morgan Hill, CaliforniaWed, Jul 18, 9:13 PM PDT · 15418 days ago · 3 km deep · 46 km away

The first 60 of 177.

Before

1. 1.514 km E of Seven Trees, CaliforniaFri, Jul 6, 7:35 PM PDT · 15430 days ago · 3 km deep · 61 km away
2. 1.524 km NE of Greenfield, CaliforniaFri, Jul 6, 7:07 PM PDT · 15430 days ago · 7 km deep · 45 km away
3. 1.924 km ENE of Soledad, CaliforniaFri, Jul 6, 7:04 PM PDT · 15430 days ago · 1 km deep · 38 km away
4. 1.610 km ESE of Gilroy, CaliforniaFri, Jul 6, 6:57 PM PDT · 15430 days ago · 0 km deep · 21 km away
5. 3.014 km E of Seven Trees, CaliforniaFri, Jul 6, 5:17 PM PDT · 15430 days ago · 3 km deep · 61 km away
6. 2.09 km E of Gilroy, CAFri, Jul 6, 5:17 AM PDT · 15430 days ago · 8 km deep · 26 km away
7. 2.113 km E of Seven Trees, CaliforniaFri, Jul 6, 1:03 AM PDT · 15430 days ago · 2 km deep · 62 km away
8. 1.616 km N of Morgan Hill, CaliforniaThu, Jul 5, 11:59 AM PDT · 15431 days ago · 9 km deep · 59 km away
9. 2.116 km N of Morgan Hill, CaliforniaThu, Jul 5, 11:59 AM PDT · 15431 days ago · 9 km deep · 59 km away
10. 2.112 km ESE of East Foothills, CaliforniaThu, Jul 5, 9:16 AM PDT · 15431 days ago · 7 km deep · 66 km away
11. 1.714 km N of Morgan Hill, CaliforniaThu, Jul 5, 6:35 AM PDT · 15431 days ago · 5 km deep · 56 km away
12. 1.78 km NE of San Martin, CaliforniaThu, Jul 5, 5:31 AM PDT · 15431 days ago · 3 km deep · 42 km away
13. 2.021 km NE of Soledad, CaliforniaThu, Jul 5, 2:42 AM PDT · 15431 days ago · 5 km deep · 37 km away
14. 2.312 km ESE of East Foothills, CaliforniaThu, Jul 5, 1:35 AM PDT · 15431 days ago · 8 km deep · 65 km away
15. 2.331 km WNW of Coalinga, CaliforniaWed, Jul 4, 10:38 PM PDT · 15431 days ago · 13 km deep · 87 km away
16. 1.814 km NNE of Morgan Hill, CaliforniaWed, Jul 4, 6:34 PM PDT · 15432 days ago · 2 km deep · 55 km away
17. 2.632 km WNW of Coalinga, CaliforniaWed, Jul 4, 3:51 PM PDT · 15432 days ago · 14 km deep · 87 km away
18. 2.04 km NNE of Morgan Hill, CaliforniaWed, Jul 4, 7:00 AM PDT · 15432 days ago · 2 km deep · 48 km away
19. 2.24 km NNE of Morgan Hill, CaliforniaWed, Jul 4, 12:34 AM PDT · 15432 days ago · 2 km deep · 47 km away
20. 1.528 km SW of South Dos Palos, CaliforniaTue, Jul 3, 9:16 PM PDT · 15433 days ago · 2 km deep · 46 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc22294. Read Sun, Oct 4, 2026, 4:18 PM UTC.