M2.5 earthquake 13km S of Buttonwillow, CA

Magnitude

2.5 (Mh), micro

Magnitude from

Southern California Seismic Network

Local time

Mon, Aug 15, 1977, 9:41 AM PDT

UTC

1977-08-15 16:41:03 UTC

Depth

23.5 km (14.6 mi), shallow

Epicenter

35.281° N, 119.450° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 1.6 km horizontally, 2.2 km in depth

Depth from

From location

Station coverage gap

170°

Stations used

12

• Dustin Acres, CaliforniaPopulation 652. Forecast9 kmNW
• Shafter, CaliforniaPopulation 18,336. Forecast29 kmSSW
• Bakersfield, CaliforniaPopulation 373,640. Forecast40 kmWSW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast176 kmNW

After

1. 1.77km WNW of Grapevine, CAMon, Aug 15, 9:03 PM PDT · 17946 days ago · 10 km deep · 54 km away
2. 3.514km SW of Arvin, CATue, Aug 16, 8:21 PM PDT · 17945 days ago · 9 km deep · 49 km away
3. 1.916km N of Santa Paula, CAThu, Aug 18, 7:13 AM PDT · 17944 days ago · 24 km deep · 94 km away
4. 1.515km N of Santa Paula, CAThu, Aug 18, 4:24 PM PDT · 17943 days ago · 16 km deep · 95 km away
5. 1.814km SW of Lamont, CAFri, Aug 19, 5:58 PM PDT · 17942 days ago · 7 km deep · 43 km away
6. 2.415km ENE of Ojai, CASat, Aug 20, 6:14 PM PDT · 17941 days ago · 7 km deep · 94 km away
7. 1.818km NW of Grapevine, CAMon, Aug 22, 12:13 AM PDT · 17940 days ago · 13 km deep · 42 km away
8. 2.99km ENE of Buttonwillow, CASat, Sep 3, 2:46 PM PDT · 17928 days ago · 3 km deep · 18 km away
9. 2.717km ESE of Arvin, CAThu, Sep 8, 6:14 PM PDT · 17922 days ago · 6 km deep · 73 km away
10. 2.617km SSW of Lamont, CASat, Sep 10, 11:21 AM PDT · 17921 days ago · 3 km deep · 44 km away
11. 1.812km N of Pine Mountain Club, CATue, Sep 13, 8:37 AM PDT · 17918 days ago · 9 km deep · 46 km away
12. 2.322km N of Pine Mountain Club, CAThu, Sep 15, 12:12 AM PDT · 17916 days ago · 0 km deep · 38 km away
13. 2.016km WNW of Grapevine, CAFri, Sep 23, 8:48 PM PDT · 17907 days ago · 4 km deep · 45 km away
14. 1.615km NW of Grapevine, CAWed, Sep 28, 4:26 PM PDT · 17902 days ago · 4 km deep · 45 km away
15. 3.014km NW of Grapevine, CAFri, Sep 30, 10:46 AM PDT · 17901 days ago · 8 km deep · 47 km away
16. 1.516km N of Pine Mountain Club, CAFri, Sep 30, 1:54 PM PDT · 17901 days ago · 6 km deep · 43 km away
17. 3.416km NE of Taft, CASat, Oct 1, 3:07 AM PDT · 17900 days ago · 11 km deep · 9 km away
18. 1.816km NW of Grapevine, CAFri, Oct 7, 9:32 PM PDT · 17893 days ago · 6 km deep · 45 km away
19. 1.714km NE of Taft, CASun, Oct 9, 1:04 AM PDT · 17892 days ago · 22 km deep · 9 km away
20. 1.58km WNW of Grapevine, CAMon, Oct 10, 5:39 AM PDT · 17891 days ago · 9 km deep · 52 km away
21. 1.76km SSE of Frazier Park, CATue, Oct 11, 12:14 PM PDT · 17890 days ago · 15 km deep · 74 km away
22. 1.523km WSW of Lamont, CAWed, Oct 12, 4:33 AM PDT · 17889 days ago · 6 km deep · 30 km away

Before

1. 2.221km NW of Tehachapi, CAWed, Aug 10, 11:04 PM PDT · 17951 days ago · 4 km deep · 79 km away
2. 1.78km E of Pine Mountain Club, CATue, Aug 9, 9:45 AM PDT · 17953 days ago · 9 km deep · 59 km away
3. 1.517km W of Tehachapi, CAMon, Aug 8, 6:10 PM PDT · 17953 days ago · 7 km deep · 75 km away
4. 1.515km NNE of Pine Mountain Club, CAMon, Aug 8, 4:15 PM PDT · 17953 days ago · 4 km deep · 46 km away
5. 2.09km WNW of Grapevine, CASat, Jul 30, 2:53 PM PDT · 17962 days ago · 10 km deep · 52 km away
6. 1.726km S of Bodfish, CASat, Jul 30, 3:33 AM PDT · 17963 days ago · 10 km deep · 84 km away
7. 1.810km SE of Pine Mountain Club, CAThu, Jul 28, 9:12 PM PDT · 17964 days ago · 6 km deep · 65 km away
8. 1.722km NW of Grapevine, CAMon, Jul 25, 9:17 PM PDT · 17967 days ago · 6 km deep · 39 km away

From the USGS Earthquake Hazards Program and its partner networks, event ci3334301. Read Sun, Oct 4, 2026, 9:16 AM UTC.