M1.8 earthquake 10 km SE of Sunol, California

Magnitude

1.8 (md), micro

Local time

Mon, Aug 14, 1978, 8:14 PM PDT

UTC

1978-08-15 03:14:59 UTC

Depth

5.1 km (3.1 mi), shallow

Epicenter

37.530° N, 121.799° 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

±0.12

Depth from

From location

Station coverage gap

105°

Stations used

29

• Sunol, CaliforniaPopulation 913. Forecast11 kmSE
• Milpitas, CaliforniaPopulation 77,604. Forecast15 kmNE
• Fremont, CaliforniaPopulation 232,206. Forecast17 kmE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast502 kmNW

After

1. 1.67 km NNE of Corralitos, CaliforniaWed, Aug 16, 7:16 PM PDT · 17576 days ago · 13 km deep · 53 km away
2. 1.69 km NW of Hollister, CaliforniaWed, Aug 16, 8:28 PM PDT · 17576 days ago · 4 km deep · 74 km away
3. 2.6Central CaliforniaThu, Aug 17, 7:21 AM PDT · 17576 days ago · 7 km deep · 80 km away
4. 1.86 km NNE of Ridgemark, CaliforniaFri, Aug 18, 5:03 AM PDT · 17575 days ago · 6 km deep · 85 km away
5. 1.68 km N of Morgan Hill, CaliforniaMon, Aug 21, 1:59 PM PDT · 17571 days ago · 4 km deep · 39 km away
6. 1.72 km SW of San Juan Bautista, CaliforniaTue, Aug 22, 2:44 AM PDT · 17571 days ago · 7 km deep · 81 km away
7. 2.31 km SW of Los Altos Hills, CaliforniaTue, Aug 22, 5:07 PM PDT · 17570 days ago · 4 km deep · 35 km away
8. 2.33 km E of Berkeley, CaliforniaTue, Aug 22, 6:31 PM PDT · 17570 days ago · 10 km deep · 53 km away
9. 2.08 km WSW of Saratoga, CaliforniaWed, Aug 23, 6:16 AM PDT · 17570 days ago · 10 km deep · 44 km away
10. 3.126 km WNW of Diablo Grande, CaliforniaThu, Aug 24, 2:04 PM PDT · 17568 days ago · 5 km deep · 23 km away
11. 1.64 km SW of Tres Pinos, CaliforniaThu, Aug 24, 4:46 PM PDT · 17568 days ago · 6 km deep · 95 km away
12. 1.78 km NE of Gilroy, CaliforniaSun, Aug 27, 3:23 AM PDT · 17566 days ago · 8 km deep · 60 km away
13. 2.23 km NNW of Hollister, CaliforniaSun, Aug 27, 7:30 AM PDT · 17566 days ago · 7 km deep · 79 km away
14. 1.53 km W of Ridgemark, CaliforniaSun, Aug 27, 5:21 PM PDT · 17565 days ago · 7 km deep · 87 km away
15. 2.32 km ESE of Tres Pinos, CaliforniaSun, Aug 27, 7:40 PM PDT · 17565 days ago · 9 km deep · 94 km away
16. 3.26 km SE of Sunol, CaliforniaSun, Aug 27, 8:32 PM PDT · 17565 days ago · 10 km deep · 4 km away
17. 1.92 km ESE of Aromas, CaliforniaSun, Aug 27, 10:33 PM PDT · 17565 days ago · 7 km deep · 74 km away
18. 2.115 km SE of Livermore, CaliforniaMon, Aug 28, 1:42 PM PDT · 17564 days ago · 2 km deep · 12 km away
19. 2.39 km ESE of East Foothills, CaliforniaMon, Aug 28, 4:38 PM PDT · 17564 days ago · 7 km deep · 21 km away
20. 1.79 km ESE of East Foothills, CaliforniaMon, Aug 28, 4:47 PM PDT · 17564 days ago · 8 km deep · 21 km away
21. 4.19 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:14 PM PDT · 17564 days ago · 8 km deep · 21 km away
22. 2.010 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:16 PM PDT · 17564 days ago · 8 km deep · 22 km away
23. 1.89 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:18 PM PDT · 17564 days ago · 8 km deep · 21 km away
24. 3.810 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:18 PM PDT · 17564 days ago · 8 km deep · 22 km away
25. 1.59 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:22 PM PDT · 17564 days ago · 7 km deep · 22 km away
26. 2.210 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:23 PM PDT · 17564 days ago · 7 km deep · 22 km away
27. 2.69 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:27 PM PDT · 17564 days ago · 8 km deep · 21 km away
28. 2.59 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:27 PM PDT · 17564 days ago · 5 km deep · 21 km away
29. 1.510 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:40 PM PDT · 17564 days ago · 8 km deep · 23 km away
30. 2.110 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:42 PM PDT · 17564 days ago · 7 km deep · 22 km away
31. 1.810 km ESE of East Foothills, CaliforniaMon, Aug 28, 5:54 PM PDT · 17564 days ago · 7 km deep · 22 km away
32. 1.610 km ESE of East Foothills, CaliforniaMon, Aug 28, 7:02 PM PDT · 17564 days ago · 7 km deep · 22 km away
33. 2.010 km ESE of East Foothills, CaliforniaTue, Aug 29, 5:43 AM PDT · 17564 days ago · 8 km deep · 22 km away
34. 2.410 km ESE of East Foothills, CaliforniaTue, Aug 29, 6:47 AM PDT · 17564 days ago · 8 km deep · 22 km away
35. 1.510 km ESE of East Foothills, CaliforniaTue, Aug 29, 3:42 PM PDT · 17563 days ago · 8 km deep · 22 km away
36. 1.716 km NE of East Foothills, CaliforniaWed, Aug 30, 2:59 PM PDT · 17562 days ago · 6 km deep · 11 km away
37. 1.710 km ESE of East Foothills, CaliforniaWed, Aug 30, 11:44 PM PDT · 17562 days ago · 7 km deep · 22 km away
38. 2.02 km N of San Ramon, CaliforniaThu, Aug 31, 11:49 AM PDT · 17562 days ago · 8 km deep · 34 km away
39. 2.46 km ENE of Seven Trees, CaliforniaThu, Aug 31, 1:25 PM PDT · 17561 days ago · 5 km deep · 24 km away
40. 2.46 km ENE of Seven Trees, CaliforniaFri, Sep 1, 2:30 AM PDT · 17561 days ago · 6 km deep · 24 km away
41. 3.36 km ENE of Seven Trees, CaliforniaFri, Sep 1, 2:31 AM PDT · 17561 days ago · 5 km deep · 24 km away
42. 1.713 km E of Seven Trees, CaliforniaSat, Sep 2, 1:34 PM PDT · 17559 days ago · 1 km deep · 28 km away
43. 1.87 km NE of Interlaken, CaliforniaSat, Sep 2, 3:03 PM PDT · 17559 days ago · 4 km deep · 60 km away
44. 1.915 km SW of Los Banos, CaliforniaSat, Sep 2, 8:14 PM PDT · 17559 days ago · 6 km deep · 96 km away
45. 1.92 km ENE of Ridgemark, CaliforniaMon, Sep 4, 3:35 AM PDT · 17558 days ago · 6 km deep · 88 km away
46. 1.79 km ESE of Gilroy, CaliforniaTue, Sep 5, 1:14 AM PDT · 17557 days ago · 4 km deep · 68 km away
47. 2.66 km ENE of Seven Trees, CaliforniaTue, Sep 5, 2:05 PM PDT · 17556 days ago · 5 km deep · 24 km away
48. 1.86 km NE of Ridgemark, CaliforniaThu, Sep 7, 7:24 PM PDT · 17554 days ago · 5 km deep · 86 km away
49. 1.81 km SE of East Foothills, CaliforniaFri, Sep 8, 3:00 AM PDT · 17554 days ago · 5 km deep · 18 km away
50. 1.63 km NE of Tres Pinos, CaliforniaFri, Sep 8, 4:32 PM PDT · 17553 days ago · 8 km deep · 91 km away
51. 2.35 km ENE of Aromas, CaliforniaSat, Sep 9, 3:09 PM PDT · 17552 days ago · 8 km deep · 71 km away
52. 2.46 km ENE of Seven Trees, CaliforniaSun, Sep 10, 10:49 AM PDT · 17552 days ago · 5 km deep · 24 km away
53. 2.26 km E of East Foothills, CaliforniaMon, Sep 11, 5:52 PM PDT · 17550 days ago · 7 km deep · 17 km away
54. 2.36 km E of East Foothills, CaliforniaFri, Sep 15, 11:27 PM PDT · 17546 days ago · 7 km deep · 17 km away
55. 2.25 km SE of Alum Rock, CaliforniaSat, Sep 16, 12:26 AM PDT · 17546 days ago · 3 km deep · 22 km away
56. 2.36 km NE of Ridgemark, CaliforniaSat, Sep 16, 3:01 AM PDT · 17546 days ago · 6 km deep · 88 km away
57. 1.75 km SSE of San Juan Bautista, CaliforniaSat, Sep 16, 1:59 PM PDT · 17545 days ago · 5 km deep · 85 km away
58. 4.237km SSW of Half Moon Bay, CASun, Sep 17, 8:38 AM PDT · 17545 days ago · 6 km deep · 80 km away
59. 2.88 km NW of Broadmoor, CaliforniaTue, Sep 19, 8:52 AM PDT · 17543 days ago · 6 km deep · 71 km away
60. 2.39 km NE of San Martin, CaliforniaTue, Sep 19, 8:53 AM PDT · 17543 days ago · 7 km deep · 47 km away

The first 60 of 85.

Before

1. 1.91 km ENE of Alamo, CaliforniaMon, Aug 14, 6:34 PM PDT · 17578 days ago · 7 km deep · 41 km away
2. 1.71 km WSW of Tres Pinos, CaliforniaMon, Aug 14, 2:21 PM PDT · 17578 days ago · 6 km deep · 92 km away
3. 1.83 km NNW of Hollister, CaliforniaFri, Aug 11, 8:03 PM PDT · 17581 days ago · 7 km deep · 80 km away
4. 2.46 km NE of East Foothills, CaliforniaFri, Aug 11, 3:48 PM PDT · 17581 days ago · 8 km deep · 13 km away
5. 2.32 km NE of East Foothills, CaliforniaFri, Aug 11, 5:35 AM PDT · 17582 days ago · 0 km deep · 15 km away
6. 2.510 km SW of Ridgemark, CaliforniaThu, Aug 10, 10:47 AM PDT · 17583 days ago · 6 km deep · 91 km away
7. 1.85 km NNE of Crockett, CaliforniaWed, Aug 9, 10:35 AM PDT · 17584 days ago · 1 km deep · 72 km away
8. 2.05 km SSE of Sunol, CaliforniaTue, Aug 8, 4:19 PM PDT · 17584 days ago · 8 km deep · 6 km away
9. 2.023 km SSW of Volta, CaliforniaMon, Aug 7, 5:34 AM PDT · 17586 days ago · 5 km deep · 95 km away
10. 1.512 km SE of Livermore, CaliforniaSat, Aug 5, 7:14 PM PDT · 17587 days ago · 4 km deep · 15 km away
11. 1.65 km SSW of Gilroy, CaliforniaSat, Aug 5, 5:04 PM PDT · 17587 days ago · 6 km deep · 66 km away
12. 2.03 km E of San Leandro, CaliforniaWed, Aug 2, 11:53 AM PDT · 17591 days ago · 9 km deep · 36 km away
13. 1.72 km SW of Ridgemark, CaliforniaTue, Aug 1, 1:01 AM PDT · 17592 days ago · 7 km deep · 90 km away
14. 2.02 km E of San Leandro, CaliforniaMon, Jul 31, 3:44 AM PDT · 17593 days ago · 10 km deep · 36 km away
15. 2.13 km E of San Leandro, CaliforniaMon, Jul 31, 2:21 AM PDT · 17593 days ago · 9 km deep · 36 km away
16. 3.03 km E of San Leandro, CaliforniaMon, Jul 31, 2:15 AM PDT · 17593 days ago · 10 km deep · 36 km away
17. 2.03 km ESE of Tres Pinos, CaliforniaFri, Jul 28, 11:21 PM PDT · 17595 days ago · 9 km deep · 95 km away
18. 2.11 km NNE of Diablo, CaliforniaFri, Jul 28, 10:38 PM PDT · 17595 days ago · 7 km deep · 37 km away
19. 2.09 km NNW of Hollister, CaliforniaThu, Jul 27, 10:44 AM PDT · 17597 days ago · 5 km deep · 74 km away
20. 2.13 km NNE of Castro Valley, CaliforniaThu, Jul 27, 12:33 AM PDT · 17597 days ago · 10 km deep · 32 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1041646. Read Wed, Sep 30, 2026, 6:45 AM UTC.