M2.4 earthquake 9km NNE of Grapevine, CA

Magnitude

2.4 (ml), micro

Local time

Thu, Jul 20, 1978, 5:35 PM PDT

UTC

1978-07-21 00:35:48 UTC

Depth

10.7 km (6.6 mi), shallow

Epicenter

35.012° N, 118.875° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.5 km horizontally, 1.0 km in depth

Magnitude uncertainty

±0.14

Depth from

From location

Station coverage gap

124°

Stations used

21

• Lebec, CaliforniaPopulation 1,468. Forecast19 kmN
• Arvin, CaliforniaPopulation 20,876. Forecast22 kmS
• Bakersfield, CaliforniaPopulation 373,640. Forecast42 kmSSE
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast121 kmNNW

After

1. 2.318km SSE of Alpaugh, CAFri, Jul 21, 1:51 AM PDT · 17596 days ago · 6 km deep · 95 km away
2. 1.818km W of Ventura, CAFri, Jul 21, 2:35 AM PDT · 17596 days ago · 1 km deep · 98 km away
3. 2.03km S of Bodfish, CAWed, Jul 26, 1:58 AM PDT · 17591 days ago · 14 km deep · 70 km away
4. 1.77km NE of Santa Clarita, CAWed, Jul 26, 4:59 PM PDT · 17590 days ago · 11 km deep · 73 km away
5. 1.63km S of Frazier Park, CASat, Jul 29, 8:08 AM PDT · 17588 days ago · 11 km deep · 25 km away
6. 3.025km E of Maricopa, CAMon, Jul 31, 8:02 AM PDT · 17586 days ago · 0 km deep · 25 km away
7. 1.812km SSW of Valencia, CAFri, Aug 4, 1:30 PM PDT · 17581 days ago · 14 km deep · 76 km away
8. 2.310km WSW of Grapevine, CASat, Aug 5, 4:56 PM PDT · 17580 days ago · 14 km deep · 18 km away
9. 1.524km SSW of Bodfish, CASat, Aug 5, 6:27 PM PDT · 17580 days ago · 2 km deep · 49 km away
10. 2.415km ESE of Arvin, CASat, Aug 5, 7:59 PM PDT · 17580 days ago · 0 km deep · 23 km away
11. 1.814km SW of Arvin, CASun, Aug 6, 10:43 AM PDT · 17579 days ago · 6 km deep · 15 km away
12. 1.58km NE of Santa Clarita, CASat, Aug 12, 7:45 PM PDT · 17573 days ago · 13 km deep · 74 km away
13. 2.07km ESE of Santa Clarita, CASun, Aug 13, 1:52 AM PDT · 17573 days ago · 6 km deep · 79 km away
14. 1.67km SW of Grapevine, CASun, Aug 13, 11:02 PM PDT · 17572 days ago · 11 km deep · 16 km away
15. 2.27km E of Santa Clarita, CAMon, Aug 14, 2:59 PM PDT · 17571 days ago · 8 km deep · 78 km away
16. 1.86km E of Santa Clarita, CAMon, Aug 14, 3:00 PM PDT · 17571 days ago · 9 km deep · 78 km away
17. 1.87km ESE of Santa Clarita, CAMon, Aug 14, 3:01 PM PDT · 17571 days ago · 8 km deep · 79 km away
18. 3.123km SW of Lamont, CAMon, Aug 14, 6:23 PM PDT · 17571 days ago · 2 km deep · 22 km away
19. 1.817km NW of Tehachapi, CAThu, Aug 17, 7:24 PM PDT · 17568 days ago · 3 km deep · 39 km away
20. 2.05km SW of Mojave, CAFri, Aug 18, 1:17 AM PDT · 17568 days ago · 4 km deep · 61 km away
21. 1.86km NNE of Lake View Terrace, CAFri, Aug 18, 7:05 AM PDT · 17568 days ago · 4 km deep · 90 km away
22. 1.74km SSE of Ventura, CASat, Aug 19, 4:04 AM PDT · 17567 days ago · 2 km deep · 90 km away
23. 2.09km SW of Agua Dulce, CASat, Aug 19, 7:59 AM PDT · 17567 days ago · 11 km deep · 79 km away
24. 1.75km WNW of Carpinteria, CASat, Aug 19, 11:33 AM PDT · 17566 days ago · 3 km deep · 91 km away
25. 1.816km NW of Grapevine, CASat, Aug 19, 2:16 PM PDT · 17566 days ago · 12 km deep · 16 km away
26. 1.72km NNE of Calabasas, CASun, Aug 20, 4:31 AM PDT · 17566 days ago · 4 km deep · 96 km away
27. 1.719km NW of Grapevine, CAMon, Aug 21, 1:42 AM PDT · 17565 days ago · 14 km deep · 19 km away
28. 1.59km N of Lake View Terrace, CAMon, Aug 21, 9:47 PM PDT · 17564 days ago · 10 km deep · 86 km away
29. 1.513km SSE of Arvin, CASat, Aug 26, 1:00 AM PDT · 17560 days ago · 12 km deep · 15 km away
30. 2.124km NNW of Tehachapi, CAMon, Aug 28, 11:00 PM PDT · 17557 days ago · 3 km deep · 46 km away
31. 2.123km ENE of Arvin, CATue, Aug 29, 4:18 AM PDT · 17557 days ago · 6 km deep · 41 km away
32. 2.616km N of Pine Mountain Club, CATue, Aug 29, 2:58 PM PDT · 17556 days ago · 3 km deep · 26 km away
33. 1.86km N of Granada Hills, CATue, Aug 29, 11:29 PM PDT · 17556 days ago · 10 km deep · 84 km away
34. 1.66km NW of Pacoima, CAWed, Aug 30, 4:58 AM PDT · 17556 days ago · 8 km deep · 85 km away
35. 1.78km N of Santa Paula, CAThu, Aug 31, 3:26 AM PDT · 17555 days ago · 4 km deep · 67 km away
36. 1.611km NNW of Grapevine, CAThu, Aug 31, 12:34 PM PDT · 17554 days ago · 6 km deep · 9 km away
37. 2.014km SE of Carpinteria, CAFri, Sep 1, 6:17 AM PDT · 17554 days ago · 3 km deep · 94 km away
38. 2.15km ESE of Bodfish, CASat, Sep 2, 7:29 PM PDT · 17552 days ago · 5 km deep · 75 km away
39. 2.89km SE of Lake Isabella, CAMon, Sep 4, 2:05 PM PDT · 17550 days ago · 3 km deep · 76 km away
40. 1.88km SE of Lake Isabella, CAMon, Sep 4, 4:22 PM PDT · 17550 days ago · 6 km deep · 76 km away
41. 1.717km SSW of Lamont, CATue, Sep 5, 10:02 AM PDT · 17549 days ago · 9 km deep · 15 km away
42. 1.714km W of Ventura, CAThu, Sep 7, 5:32 AM PDT · 17548 days ago · 0 km deep · 97 km away
43. 1.615km N of Grapevine, CAThu, Sep 7, 7:19 PM PDT · 17547 days ago · 10 km deep · 9 km away
44. 1.92km S of Montecito, CASun, Sep 10, 5:03 AM PDT · 17545 days ago · 6 km deep · 96 km away
45. 1.99km E of Santa Clarita, CAMon, Sep 11, 11:26 AM PDT · 17543 days ago · 11 km deep · 79 km away
46. 1.69km ENE of Santa Clarita, CAMon, Sep 11, 9:01 PM PDT · 17543 days ago · 5 km deep · 76 km away
47. 1.610km ESE of Santa Clarita, CATue, Sep 12, 9:46 PM PDT · 17542 days ago · 2 km deep · 83 km away
48. 1.920km NW of Grapevine, CAWed, Sep 13, 12:13 AM PDT · 17542 days ago · 0 km deep · 20 km away
49. 1.622km NE of Arvin, CAThu, Sep 14, 1:57 PM PDT · 17540 days ago · 1 km deep · 43 km away
50. 2.38km ESE of Bodfish, CAFri, Sep 15, 3:31 AM PDT · 17540 days ago · 6 km deep · 75 km away
51. 1.56km W of Grapevine, CAMon, Sep 18, 3:28 PM PDT · 17536 days ago · 11 km deep · 13 km away

Before

1. 1.521km ENE of Maricopa, CAThu, Jul 20, 4:23 AM PDT · 17597 days ago · 6 km deep · 31 km away
2. 1.813km NW of Mojave, CAWed, Jul 19, 12:06 PM PDT · 17597 days ago · 6 km deep · 55 km away
3. 1.910km E of Santa Clarita, CATue, Jul 18, 3:10 PM PDT · 17598 days ago · 10 km deep · 80 km away
4. 2.13km SE of Santa Clarita, CATue, Jul 18, 1:58 AM PDT · 17599 days ago · 15 km deep · 78 km away
5. 1.816km ENE of Ojai, CASat, Jul 15, 4:30 PM PDT · 17601 days ago · 18 km deep · 58 km away
6. 1.99km SW of Agua Dulce, CASat, Jul 15, 7:10 AM PDT · 17602 days ago · 12 km deep · 79 km away
7. 1.75km ENE of Santa Clarita, CASat, Jul 15, 1:30 AM PDT · 17602 days ago · 11 km deep · 75 km away
8. 3.221km N of Pine Mountain Club, CATue, Jul 11, 12:05 PM PDT · 17605 days ago · 0 km deep · 26 km away
9. 2.98km ESE of Bakersfield, CAMon, Jul 10, 2:05 AM PDT · 17607 days ago · 0 km deep · 36 km away
10. 1.83km S of Frazier Park, CASun, Jul 9, 8:47 PM PDT · 17607 days ago · 6 km deep · 25 km away
11. 1.915km ENE of Ojai, CASun, Jul 9, 9:48 AM PDT · 17607 days ago · 5 km deep · 60 km away
12. 1.917km SE of Bodfish, CAThu, Jul 6, 5:18 PM PDT · 17610 days ago · 6 km deep · 68 km away
13. 2.619km SE of Bodfish, CAThu, Jul 6, 2:41 AM PDT · 17611 days ago · 2 km deep · 67 km away
14. 2.320km SE of Bodfish, CAWed, Jul 5, 9:20 PM PDT · 17611 days ago · 0 km deep · 66 km away
15. 1.815km NNE of Grapevine, CAMon, Jul 3, 8:23 PM PDT · 17613 days ago · 11 km deep · 6 km away
16. 2.119km SE of Bodfish, CAFri, Jun 30, 2:21 AM PDT · 17617 days ago · 6 km deep · 69 km away
17. 3.06km WNW of Castaic, CAWed, Jun 28, 4:48 PM PDT · 17618 days ago · 18 km deep · 59 km away
18. 1.62km SE of Santa Clarita, CAWed, Jun 28, 6:43 AM PDT · 17619 days ago · 16 km deep · 76 km away
19. 1.53km SE of Santa Clarita, CAWed, Jun 28, 5:50 AM PDT · 17619 days ago · 16 km deep · 77 km away
20. 1.816km NW of Tehachapi, CAWed, Jun 28, 2:23 AM PDT · 17619 days ago · 7 km deep · 37 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3340834. Read Wed, Sep 23, 2026, 3:21 AM UTC.