M1.6 earthquake 11km W of Grapevine, CA

Magnitude

1.6 (Mc), micro

Magnitude from

Southern California Seismic Network

Local time

Tue, Oct 20, 1987, 5:34 PM PDT

UTC

1987-10-21 00:34:27 UTC

Depth

15.9 km (9.9 mi), shallow

Epicenter

34.948° N, 119.048° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

From location

Station coverage gap

134°

Stations used

0

• Pine Mountain Club, CaliforniaPopulation 2,315. Forecast15 kmNE
• Arvin, CaliforniaPopulation 20,876. Forecast35 kmSW
• Bakersfield, CaliforniaPopulation 373,640. Forecast47 kmS
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast124 kmNW

After

1. 1.724km NW of Grapevine, CATue, Oct 20, 7:44 PM PDT · 14226 days ago · 5 km deep · 16 km away
2. 1.817km SE of Arvin, CASat, Oct 24, 11:03 PM PDT · 14222 days ago · 13 km deep · 38 km away
3. 1.95km WNW of Lake Isabella, CATue, Oct 27, 4:17 PM PST · 14219 days ago · 0 km deep · 89 km away
4. 1.910km NW of Grapevine, CAWed, Oct 28, 2:33 AM PST · 14219 days ago · 14 km deep · 9 km away
5. 2.115km SSW of Tehachapi, CAThu, Oct 29, 3:20 PM PST · 14217 days ago · 4 km deep · 52 km away
6. 1.612km W of Wofford Heights, CAFri, Oct 30, 6:49 AM PST · 14216 days ago · 2 km deep · 94 km away
7. 2.322km ESE of Bodfish, CASat, Oct 31, 11:01 AM PST · 14215 days ago · 9 km deep · 91 km away
8. 1.628km SSW of Maricopa, CASat, Oct 31, 2:50 PM PST · 14215 days ago · 5 km deep · 47 km away
9. 1.822km ESE of Bodfish, CASat, Oct 31, 10:16 PM PST · 14215 days ago · 10 km deep · 92 km away
10. 2.010km NNE of Ojai, CASat, Nov 7, 11:33 AM PST · 14208 days ago · 1 km deep · 48 km away
11. 2.04km WSW of Frazier Park, CASun, Nov 8, 3:43 PM PST · 14207 days ago · 6 km deep · 17 km away
12. 1.917km NW of Tehachapi, CAMon, Nov 9, 12:33 PM PST · 14206 days ago · 8 km deep · 50 km away
13. 2.817km ESE of Arvin, CAMon, Nov 9, 9:23 PM PST · 14206 days ago · 9 km deep · 43 km away
14. 1.914km NNW of Castaic, CAWed, Nov 11, 11:49 AM PST · 14204 days ago · 9 km deep · 52 km away
15. 2.04km N of Santa Paula, CASun, Nov 15, 4:18 PM PST · 14200 days ago · 18 km deep · 62 km away
16. 1.925km SW of Lamont, CAMon, Nov 23, 5:18 PM PST · 14192 days ago · 5 km deep · 22 km away
17. 1.62km NNE of Chatsworth, CATue, Nov 24, 6:15 PM PST · 14191 days ago · 7 km deep · 86 km away
18. 2.17km NE of Fillmore, CASat, Nov 28, 10:53 PM PST · 14187 days ago · 0 km deep · 58 km away
19. 2.922km ESE of Bodfish, CATue, Dec 1, 8:44 PM PST · 14184 days ago · 8 km deep · 91 km away
20. 1.922km ESE of Bodfish, CATue, Dec 1, 9:04 PM PST · 14184 days ago · 9 km deep · 91 km away
21. 2.628km W of Bodfish, CAFri, Dec 4, 8:36 PM PST · 14181 days ago · 5 km deep · 77 km away
22. 3.222km ESE of Bodfish, CASat, Dec 5, 12:36 PM PST · 14180 days ago · 8 km deep · 92 km away
23. 1.68km NE of Grapevine, CAMon, Dec 7, 1:12 PM PST · 14178 days ago · 11 km deep · 17 km away
24. 1.717km SW of Lamont, CAThu, Dec 10, 12:35 PM PST · 14175 days ago · 24 km deep · 21 km away
25. 2.18km NNW of Malibu, CASat, Dec 12, 2:48 PM PST · 14173 days ago · 13 km deep · 99 km away
26. 3.410km ENE of Pine Mountain Club, CASun, Dec 13, 6:30 PM PST · 14172 days ago · 12 km deep · 7 km away
27. 1.910km ENE of Pine Mountain Club, CASun, Dec 13, 7:44 PM PST · 14172 days ago · 15 km deep · 7 km away
28. 4.018km NE of Lamont, CATue, Dec 15, 10:23 AM PST · 14170 days ago · 2 km deep · 53 km away
29. 2.211km N of Pine Mountain Club, CAWed, Dec 16, 3:40 AM PST · 14169 days ago · 15 km deep · 11 km away

Before

1. 2.914km ESE of Lake Isabella, CATue, Oct 20, 6:43 AM PDT · 14226 days ago · 5 km deep · 96 km away
2. 2.024km SE of Bodfish, CAMon, Oct 19, 10:59 AM PDT · 14227 days ago · 12 km deep · 85 km away
3. 1.924km NE of Arvin, CASun, Oct 18, 3:25 AM PDT · 14229 days ago · 1 km deep · 58 km away
4. 1.712km SW of Arvin, CAThu, Oct 15, 2:26 AM PDT · 14232 days ago · 15 km deep · 23 km away
5. 1.98km NNW of Grapevine, CAMon, Oct 12, 5:10 PM PDT · 14234 days ago · 14 km deep · 9 km away
6. 1.95km S of Mojave, CASun, Oct 11, 6:22 PM PDT · 14235 days ago · 2 km deep · 81 km away
7. 1.816km S of Bodfish, CASun, Oct 11, 10:09 AM PDT · 14235 days ago · 4 km deep · 77 km away
8. 2.119km NNW of Tehachapi, CASat, Oct 10, 4:41 PM PDT · 14236 days ago · 1 km deep · 59 km away
9. 2.014km NNE of Santa Cruz Is. (E end), CASat, Oct 10, 4:15 AM PDT · 14236 days ago · 18 km deep · 97 km away
10. 1.913km NW of Taft, CAThu, Oct 8, 5:24 PM PDT · 14238 days ago · 23 km deep · 55 km away
11. 1.98km ESE of Piru, CAThu, Oct 8, 1:12 PM PDT · 14238 days ago · 4 km deep · 68 km away
12. 1.721km NNW of Tehachapi, CAWed, Oct 7, 5:14 PM PDT · 14239 days ago · 7 km deep · 62 km away
13. 1.75km NE of Santa Clarita, CAMon, Oct 5, 7:10 AM PDT · 14241 days ago · 18 km deep · 77 km away
14. 2.012km WNW of Malibu, CAMon, Oct 5, 2:07 AM PDT · 14242 days ago · 9 km deep · 99 km away
15. 1.96km W of Grapevine, CASun, Oct 4, 8:08 PM PDT · 14242 days ago · 14 km deep · 5 km away
16. 2.95km WSW of Grapevine, CASun, Oct 4, 7:32 PM PDT · 14242 days ago · 15 km deep · 6 km away
17. 1.68km SSW of Castaic, CASun, Oct 4, 3:20 AM PDT · 14243 days ago · 16 km deep · 67 km away
18. 2.213km SW of Arvin, CASun, Oct 4, 2:37 AM PDT · 14243 days ago · 11 km deep · 23 km away
19. 1.619km W of Rosamond, CAThu, Oct 1, 12:20 PM PDT · 14245 days ago · 17 km deep · 62 km away
20. 1.821km NNW of Tehachapi, CAThu, Oct 1, 11:28 AM PDT · 14245 days ago · 5 km deep · 60 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci733305. Read Thu, Oct 1, 2026, 10:13 PM UTC.