M2.4 earthquake 8 km SE of Sunol, California

Magnitude

2.4 (Md, duration), micro

Magnitude from

Northern California Seismic System

Local time

Mon, Dec 4, 1978, 6:29 AM PST

UTC

1978-12-04 14:29:08 UTC

Depth

9.5 km (5.9 mi), shallow

Epicenter

37.542° N, 121.815° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.2 km horizontally, 0.6 km in depth

Magnitude uncertainty

±0.15

Depth from

From location

Station coverage gap

61°

Stations used

47

• Sunol, CaliforniaPopulation 913. Forecast9 kmSE
• Pleasanton, CaliforniaPopulation 79,510. Forecast14 kmSSE
• Fremont, CaliforniaPopulation 232,206. Forecast15 kmE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast504 kmNW

After

1. 1.67 km ENE of Gilroy, CaliforniaWed, Dec 6, 4:27 PM PST · 17466 days ago · 5 km deep · 65 km away
2. 1.75 km S of Tres Pinos, CaliforniaThu, Dec 7, 2:15 PM PST · 17465 days ago · 8 km deep · 99 km away
3. 2.89 km ENE of Patterson, CaliforniaThu, Dec 7, 5:48 PM PST · 17465 days ago · 14 km deep · 70 km away
4. 2.419 km WSW of Diablo Grande, CaliforniaThu, Dec 7, 9:10 PM PST · 17465 days ago · 7 km deep · 40 km away
5. 1.77 km ENE of Interlaken, CaliforniaFri, Dec 8, 9:39 AM PST · 17465 days ago · 2 km deep · 65 km away
6. 1.87 km NNW of Hollister, CaliforniaFri, Dec 8, 8:42 PM PST · 17464 days ago · 2 km deep · 77 km away
7. 1.69 km NNW of Hollister, CaliforniaSat, Dec 9, 7:27 AM PST · 17464 days ago · 7 km deep · 75 km away
8. 2.39 km NNW of Hollister, CaliforniaSat, Dec 9, 7:34 PM PST · 17463 days ago · 6 km deep · 75 km away
9. 1.53 km NNW of Hollister, CaliforniaSun, Dec 10, 5:09 PM PST · 17462 days ago · 6 km deep · 81 km away
10. 2.110 km SE of Sonoma, CaliforniaMon, Dec 11, 3:46 AM PST · 17462 days ago · 7 km deep · 90 km away
11. 2.13 km E of Berkeley, CaliforniaThu, Dec 14, 4:04 AM PST · 17459 days ago · 11 km deep · 52 km away
12. 1.93 km E of Moraga, CaliforniaThu, Dec 14, 8:51 PM PST · 17458 days ago · 2 km deep · 40 km away
13. 1.711 km ESE of East Foothills, CaliforniaSat, Dec 16, 9:42 PM PST · 17456 days ago · 7 km deep · 25 km away
14. 3.34 km ENE of East Foothills, CaliforniaSun, Dec 17, 11:59 PM PST · 17455 days ago · 2 km deep · 17 km away
15. 2.14 km N of East Foothills, CaliforniaTue, Dec 19, 2:57 PM PST · 17453 days ago · 2 km deep · 14 km away
16. 1.66 km NW of Morgan Hill, CaliforniaFri, Dec 22, 2:29 AM PST · 17451 days ago · 6 km deep · 42 km away
17. 1.66 km NE of Interlaken, CaliforniaSun, Dec 24, 8:40 AM PST · 17449 days ago · 11 km deep · 63 km away
18. 1.71 km NE of Tres Pinos, CaliforniaSun, Dec 24, 9:17 AM PST · 17449 days ago · 8 km deep · 94 km away
19. 1.611 km SE of Sunol, CaliforniaSun, Dec 24, 1:50 PM PST · 17448 days ago · 3 km deep · 3 km away
20. 1.68 km N of Interlaken, CaliforniaMon, Dec 25, 3:50 PM PST · 17447 days ago · 11 km deep · 58 km away
21. 2.08 km N of Interlaken, CaliforniaMon, Dec 25, 3:53 PM PST · 17447 days ago · 11 km deep · 58 km away
22. 2.714 km S of Tracy, CaliforniaTue, Dec 26, 2:53 AM PST · 17447 days ago · 2 km deep · 37 km away
23. 1.626 km ENE of East Foothills, CaliforniaTue, Dec 26, 3:24 AM PST · 17447 days ago · 5 km deep · 24 km away
24. 2.36 km E of East Foothills, CaliforniaTue, Dec 26, 3:31 PM PST · 17446 days ago · 6 km deep · 19 km away
25. 2.82 km SSW of Hollister, CaliforniaWed, Dec 27, 11:29 PM PST · 17445 days ago · 9 km deep · 86 km away
26. 2.114 km E of Seven Trees, CaliforniaThu, Dec 28, 8:29 PM PST · 17444 days ago · 3 km deep · 31 km away
27. 1.95 km ESE of Black Point-Green Point, CaliforniaFri, Dec 29, 1:19 AM PST · 17444 days ago · 5 km deep · 84 km away
28. 1.85 km NNE of Morgan Hill, CaliforniaSat, Dec 30, 11:11 PM PST · 17442 days ago · 7 km deep · 43 km away
29. 2.48 km N of East Foothills, CaliforniaSun, Dec 31, 2:09 PM PST · 17441 days ago · 6 km deep · 10 km away
30. 1.56 km E of East Foothills, CaliforniaMon, Jan 1, 6:43 PM PST · 17440 days ago · 7 km deep · 18 km away
31. 3.46km WNW of Castroville, CATue, Jan 2, 10:45 PM PST · 17439 days ago · 6 km deep · 84 km away
32. 1.919 km WSW of Diablo Grande, CaliforniaWed, Jan 3, 12:39 AM PST · 17439 days ago · 8 km deep · 39 km away
33. 1.72 km W of Cambrian Park, CaliforniaWed, Jan 3, 11:30 AM PST · 17439 days ago · 8 km deep · 34 km away
34. 2.116 km NE of East Foothills, CaliforniaFri, Jan 5, 8:42 AM PST · 17437 days ago · 6 km deep · 16 km away
35. 2.48 km NE of Gilroy, CaliforniaFri, Jan 5, 4:04 PM PST · 17436 days ago · 7 km deep · 62 km away
36. 1.84 km WSW of North Richmond, CaliforniaSat, Jan 6, 12:59 AM PST · 17436 days ago · 8 km deep · 69 km away
37. 2.48 km NE of Interlaken, CaliforniaSun, Jan 7, 5:41 AM PST · 17435 days ago · 4 km deep · 62 km away
38. 2.11 km N of Tres Pinos, CaliforniaMon, Jan 8, 6:42 AM PST · 17434 days ago · 9 km deep · 93 km away
39. 1.95 km E of La Honda, CaliforniaMon, Jan 8, 3:18 PM PST · 17433 days ago · 8 km deep · 43 km away
40. 1.614 km E of Seven Trees, CaliforniaTue, Jan 9, 2:01 PM PST · 17432 days ago · 6 km deep · 29 km away
41. 2.210 km ESE of Gilroy, CaliforniaTue, Jan 9, 2:13 PM PST · 17432 days ago · 5 km deep · 70 km away
42. 2.29 km ESE of Gilroy, CaliforniaTue, Jan 9, 2:45 PM PST · 17432 days ago · 5 km deep · 70 km away
43. 2.45 km E of Black Point-Green Point, CaliforniaTue, Jan 9, 8:57 PM PST · 17432 days ago · 12 km deep · 85 km away
44. 1.62 km SW of Ridgemark, CaliforniaWed, Jan 10, 5:10 AM PST · 17432 days ago · 7 km deep · 92 km away
45. 2.38 km NE of Interlaken, CaliforniaWed, Jan 10, 5:37 AM PST · 17432 days ago · 5 km deep · 62 km away
46. 1.88 km NE of Interlaken, CaliforniaWed, Jan 10, 5:46 AM PST · 17432 days ago · 4 km deep · 62 km away
47. 2.58 km NNE of Interlaken, CaliforniaThu, Jan 11, 11:52 AM PST · 17431 days ago · 10 km deep · 58 km away
48. 2.18 km N of Interlaken, CaliforniaThu, Jan 11, 11:53 AM PST · 17431 days ago · 10 km deep · 58 km away
49. 3.18 km N of Interlaken, CaliforniaThu, Jan 11, 11:57 AM PST · 17431 days ago · 10 km deep · 58 km away
50. 2.38 km N of Interlaken, CaliforniaThu, Jan 11, 12:11 PM PST · 17431 days ago · 9 km deep · 58 km away
51. 3.65 km E of East Foothills, CaliforniaThu, Jan 11, 12:39 PM PST · 17431 days ago · 0 km deep · 20 km away
52. 2.95 km E of East Foothills, CaliforniaThu, Jan 11, 12:41 PM PST · 17431 days ago · 0 km deep · 19 km away
53. 2.115 km SW of Santa Cruz, CaliforniaThu, Jan 11, 2:10 PM PST · 17430 days ago · 8 km deep · 80 km away
54. 1.95 km E of East Foothills, CaliforniaThu, Jan 11, 5:49 PM PST · 17430 days ago · 0 km deep · 20 km away
55. 1.78 km NW of Hollister, CaliforniaThu, Jan 11, 8:00 PM PST · 17430 days ago · 6 km deep · 77 km away
56. 2.38 km ENE of San Martin, CaliforniaSat, Jan 13, 6:35 PM PST · 17428 days ago · 8 km deep · 54 km away
57. 2.11 km WNW of Diablo, CaliforniaSat, Jan 13, 11:22 PM PST · 17428 days ago · 9 km deep · 36 km away
58. 1.96 km E of East Foothills, CaliforniaSun, Jan 14, 5:29 AM PST · 17428 days ago · 1 km deep · 20 km away
59. 1.82 km W of Cambrian Park, CaliforniaSun, Jan 14, 7:34 AM PST · 17428 days ago · 7 km deep · 34 km away
60. 1.82 km WNW of Cambrian Park, CaliforniaSun, Jan 14, 8:00 AM PST · 17428 days ago · 7 km deep · 33 km away

The first 60 of 97.

Before

1. 1.711 km SE of Sunol, CaliforniaThu, Nov 30, 2:43 PM PST · 17472 days ago · 3 km deep · 3 km away
2. 2.42 km SW of San Juan Bautista, CaliforniaWed, Nov 29, 1:55 PM PST · 17473 days ago · 6 km deep · 83 km away
3. 2.114 km SE of Livermore, CaliforniaSun, Nov 26, 8:22 PM PST · 17476 days ago · 1 km deep · 13 km away
4. 1.99 km ESE of Gilroy, CaliforniaFri, Nov 24, 6:25 PM PST · 17478 days ago · 5 km deep · 69 km away
5. 1.98 km ESE of Gilroy, CaliforniaFri, Nov 24, 3:23 PM PST · 17478 days ago · 5 km deep · 69 km away
6. 1.74 km E of Livermore, CaliforniaThu, Nov 23, 4:16 AM PST · 17480 days ago · 9 km deep · 18 km away
7. 2.18 km SSW of Tres Pinos, CaliforniaWed, Nov 22, 12:49 AM PST · 17481 days ago · 2 km deep · 99 km away
8. 1.510 km ESE of East Foothills, CaliforniaMon, Nov 20, 8:44 PM PST · 17482 days ago · 8 km deep · 24 km away
9. 1.810 km ESE of East Foothills, CaliforniaMon, Nov 20, 8:00 PM PST · 17482 days ago · 8 km deep · 24 km away
10. 1.710 km WSW of Santa Cruz, CaliforniaSat, Nov 18, 6:49 PM PST · 17484 days ago · 12 km deep · 74 km away
11. 2.113 km SW of Santa Cruz, CaliforniaSat, Nov 18, 4:53 PM PST · 17484 days ago · 6 km deep · 78 km away
12. 1.916 km ENE of East Foothills, CaliforniaThu, Nov 16, 12:41 AM PST · 17487 days ago · 6 km deep · 21 km away
13. 2.04 km NE of Ridgemark, CaliforniaTue, Nov 14, 9:38 PM PST · 17488 days ago · 8 km deep · 88 km away
14. 1.89 km ESE of East Foothills, CaliforniaTue, Nov 14, 6:10 PM PST · 17488 days ago · 8 km deep · 22 km away
15. 2.08 km ESE of East Foothills, CaliforniaTue, Nov 14, 5:51 PM PST · 17488 days ago · 8 km deep · 22 km away
16. 1.616 km E of East Foothills, CaliforniaSat, Nov 11, 7:26 PM PST · 17491 days ago · 4 km deep · 24 km away
17. 2.017 km ENE of East Foothills, CaliforniaSat, Nov 11, 6:24 PM PST · 17491 days ago · 5 km deep · 21 km away
18. 2.14 km SSE of San Juan Bautista, CaliforniaSat, Nov 11, 3:06 PM PST · 17491 days ago · 4 km deep · 85 km away
19. 2.423 km SSW of Volta, CaliforniaSat, Nov 11, 11:46 AM PST · 17492 days ago · 4 km deep · 97 km away
20. 1.75 km NNW of San Juan Bautista, CaliforniaThu, Nov 9, 5:09 AM PST · 17494 days ago · 7 km deep · 75 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1043614. Read Fri, Oct 2, 2026, 8:26 AM UTC.