M1.8 earthquake 20km NW of Grapevine, CA

Magnitude

1.8 (mh), micro

Local time

Sun, Sep 23, 1984, 1:29 AM PDT

UTC

1984-09-23 08:29:54 UTC

Depth

8.1 km (5.0 mi), shallow

Epicenter

35.081° N, 119.071° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

From location

Station coverage gap

174°

Stations used

0

• Greenfield, CaliforniaPopulation 3,991. Forecast22 kmSSW
• Lamont, CaliforniaPopulation 15,120. Forecast24 kmSW
• Bakersfield, CaliforniaPopulation 373,640. Forecast33 kmS
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast137 kmNNW

After

1. 2.320km NW of Grapevine, CASun, Sep 23, 1:29 AM PDT · 15347 days ago · 15 km deep · 0 km away
2. 2.121km NW of Grapevine, CASun, Sep 23, 3:58 AM PDT · 15346 days ago · 17 km deep · 2 km away
3. 2.019km NW of Grapevine, CASun, Sep 23, 4:51 AM PDT · 15346 days ago · 17 km deep · 1 km away
4. 1.521km ESE of Lake Isabella, CATue, Sep 25, 11:55 AM PDT · 15344 days ago · 11 km deep · 88 km away
5. 2.213km SSE of Bodfish, CAWed, Sep 26, 3:39 AM PDT · 15343 days ago · 5 km deep · 73 km away
6. 1.712km SE of Buttonwillow, CAWed, Sep 26, 8:26 AM PDT · 15343 days ago · 21 km deep · 39 km away
7. 1.924km NNW of Tehachapi, CAWed, Sep 26, 8:56 AM PDT · 15343 days ago · 5 km deep · 52 km away
8. 2.18km NNE of Pine Mountain Club, CAThu, Sep 27, 10:02 PM PDT · 15342 days ago · 13 km deep · 19 km away
9. 1.83km ENE of Ojai, CASat, Sep 29, 7:57 AM PDT · 15340 days ago · 7 km deep · 70 km away
10. 3.317km NW of Grapevine, CAMon, Oct 1, 7:37 AM PDT · 15338 days ago · 21 km deep · 5 km away
11. 3.34km NNW of Ventura, CAMon, Oct 1, 7:59 PM PDT · 15338 days ago · 1 km deep · 87 km away
12. 2.85km NW of Ventura, CAMon, Oct 1, 9:01 PM PDT · 15338 days ago · 13 km deep · 88 km away
13. 3.34km NNW of Ventura, CATue, Oct 2, 2:38 AM PDT · 15337 days ago · 0 km deep · 87 km away
14. 1.521km ESE of Lake Isabella, CATue, Oct 2, 7:07 AM PDT · 15337 days ago · 8 km deep · 88 km away
15. 1.810km ESE of Piru, CAWed, Oct 3, 3:12 AM PDT · 15336 days ago · 2 km deep · 84 km away
16. 1.710km WSW of Rosamond, CAWed, Oct 3, 5:03 PM PDT · 15336 days ago · 5 km deep · 78 km away
17. 2.410km ESE of Santa Clarita, CAFri, Oct 5, 11:24 AM PDT · 15334 days ago · 5 km deep · 99 km away
18. 1.710km N of Grapevine, CAFri, Oct 5, 3:47 PM PDT · 15334 days ago · 12 km deep · 14 km away
19. 3.112km S of Tehachapi, CASat, Oct 6, 1:21 AM PDT · 15334 days ago · 6 km deep · 55 km away
20. 2.113km ENE of Santa Ynez, CASun, Oct 7, 9:54 AM PDT · 15332 days ago · -1 km deep · 93 km away
21. 1.71km SE of Castaic, CAMon, Oct 8, 3:44 AM PDT · 15331 days ago · 7 km deep · 78 km away
22. 1.81km SSE of Castaic, CAMon, Oct 8, 3:44 AM PDT · 15331 days ago · 4 km deep · 79 km away
23. 2.01km S of Castaic, CAMon, Oct 8, 4:06 AM PDT · 15331 days ago · 7 km deep · 78 km away
24. 2.19km WSW of Ojai, CAMon, Oct 8, 5:48 AM PDT · 15331 days ago · 13 km deep · 78 km away
25. 2.119km SW of Lamont, CAMon, Oct 8, 3:54 PM PDT · 15331 days ago · 14 km deep · 5 km away
26. 1.719km NNW of Grapevine, CAWed, Oct 10, 2:39 PM PDT · 15329 days ago · 12 km deep · 3 km away
27. 1.617km NNW of Tehachapi, CASat, Oct 20, 2:34 AM PDT · 15319 days ago · 5 km deep · 52 km away
28. 1.520km NNW of Grapevine, CAMon, Oct 22, 2:03 AM PDT · 15317 days ago · 13 km deep · 3 km away
29. 2.120km SW of Lamont, CAMon, Oct 22, 2:03 AM PDT · 15317 days ago · 12 km deep · 5 km away
30. 3.58km WSW of Tehachapi, CAMon, Oct 22, 1:28 PM PDT · 15317 days ago · 2 km deep · 50 km away
31. 2.524km NE of Arvin, CAThu, Oct 25, 6:49 PM PDT · 15314 days ago · 5 km deep · 50 km away
32. 1.76km SSW of Santa Clarita, CASat, Oct 27, 7:33 PM PDT · 15312 days ago · 2 km deep · 93 km away
33. 1.820km SW of Lamont, CASat, Oct 27, 11:54 PM PDT · 15312 days ago · 14 km deep · 5 km away
34. 2.426km S of Bodfish, CASun, Oct 28, 2:54 PM PST · 15311 days ago · 4 km deep · 61 km away
35. 1.719km SW of Lamont, CAMon, Oct 29, 12:17 PM PST · 15310 days ago · 13 km deep · 5 km away
36. 2.812km WSW of Tehachapi, CATue, Oct 30, 12:04 PM PST · 15309 days ago · 6 km deep · 45 km away
37. 2.116km NW of Grapevine, CAWed, Oct 31, 1:16 PM PST · 15308 days ago · 12 km deep · 5 km away
38. 2.215km NW of California City, CAMon, Nov 5, 6:06 AM PST · 15303 days ago · 5 km deep · 89 km away
39. 1.915km SSW of Arvin, CATue, Nov 6, 6:09 AM PST · 15302 days ago · 21 km deep · 16 km away
40. 1.82km NNE of Kernville, CATue, Nov 6, 9:08 AM PST · 15302 days ago · 8 km deep · 97 km away
41. 2.28km NE of Camarillo, CAWed, Nov 7, 9:54 AM PST · 15301 days ago · 5 km deep · 92 km away
42. 2.515km NE of Ojai, CAWed, Nov 7, 11:38 AM PST · 15301 days ago · 0 km deep · 59 km away
43. 1.98km E of Camarillo, CAWed, Nov 7, 6:45 PM PST · 15301 days ago · 22 km deep · 96 km away
44. 1.620km NNW of Grapevine, CAThu, Nov 8, 9:35 PM PST · 15300 days ago · 15 km deep · 4 km away
45. 2.29km S of Bodfish, CASat, Nov 10, 4:10 AM PST · 15298 days ago · 2 km deep · 69 km away
46. 1.88km WSW of Grapevine, CASat, Nov 10, 7:03 AM PST · 15298 days ago · 14 km deep · 21 km away
47. 1.913km N of Grapevine, CAThu, Nov 15, 5:20 PM PST · 15293 days ago · 10 km deep · 12 km away
48. 1.818km NE of Lamont, CAThu, Nov 15, 5:45 PM PST · 15293 days ago · 5 km deep · 42 km away
49. 1.617km SW of Lamont, CAFri, Nov 16, 8:54 PM PST · 15292 days ago · 16 km deep · 8 km away
50. 1.610km S of Bodfish, CASun, Nov 18, 12:45 AM PST · 15290 days ago · 1 km deep · 69 km away
51. 1.918km N of Fillmore, CATue, Nov 20, 3:23 AM PST · 15288 days ago · 13 km deep · 59 km away

Before

1. 1.818km SW of Lamont, CASun, Sep 23, 12:11 AM PDT · 15347 days ago · 9 km deep · 6 km away
2. 1.67km SE of Tehachapi, CASat, Sep 22, 4:06 PM PDT · 15347 days ago · 5 km deep · 62 km away
3. 1.53km NE of Santa Clarita, CAThu, Sep 20, 11:01 AM PDT · 15349 days ago · 5 km deep · 89 km away
4. 2.312km NE of Santa Ynez, CAThu, Sep 20, 4:31 AM PDT · 15349 days ago · -1 km deep · 94 km away
5. 3.512km ENE of Santa Ynez, CAWed, Sep 19, 2:11 PM PDT · 15350 days ago · 0 km deep · 94 km away
6. 2.07km E of Santa Ynez, CAWed, Sep 19, 1:57 PM PDT · 15350 days ago · 15 km deep · 100 km away
7. 1.813km NW of Grapevine, CAMon, Sep 17, 9:25 PM PDT · 15352 days ago · 15 km deep · 7 km away
8. 1.816km WSW of Tehachapi, CAMon, Sep 17, 12:44 AM PDT · 15353 days ago · 10 km deep · 42 km away
9. 1.618km SW of Lamont, CASun, Sep 16, 2:02 AM PDT · 15353 days ago · 11 km deep · 6 km away
10. 1.514km SSW of Tehachapi, CATue, Sep 11, 2:41 PM PDT · 15358 days ago · 7 km deep · 54 km away
11. 1.818km SW of Lamont, CASun, Sep 9, 7:47 PM PDT · 15360 days ago · 5 km deep · 6 km away
12. 1.816km N of Santa Paula, CASun, Sep 9, 10:47 AM PDT · 15360 days ago · 7 km deep · 65 km away
13. 2.46km SSW of Santa Barbara, CASat, Sep 8, 7:19 PM PDT · 15361 days ago · 5 km deep · 99 km away
14. 1.917km ESE of Arvin, CASat, Sep 8, 6:50 PM PDT · 15361 days ago · 10 km deep · 37 km away
15. 1.819km NW of Grapevine, CASat, Sep 8, 5:03 AM PDT · 15361 days ago · 15 km deep · 1 km away
16. 1.65km NNE of Santa Clarita, CASat, Sep 8, 2:54 AM PDT · 15361 days ago · 7 km deep · 87 km away
17. 2.012km ESE of Wofford Heights, CAThu, Sep 6, 4:48 PM PDT · 15363 days ago · 7 km deep · 95 km away
18. 1.720km SE of Bodfish, CATue, Sep 4, 5:39 AM PDT · 15365 days ago · 6 km deep · 79 km away
19. 1.919km SSW of Lamont, CAMon, Sep 3, 3:01 PM PDT · 15366 days ago · 10 km deep · 6 km away
20. 1.618km NW of Grapevine, CAMon, Sep 3, 12:17 PM PDT · 15366 days ago · 16 km deep · 2 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci51185. Read Tue, Sep 29, 2026, 8:11 PM UTC.