M2.5 earthquake 112 km W of Ferndale, California

Magnitude

2.5 (ML, local (Richter)), micro

Magnitude from

USGS National Earthquake Information Center

Local time

Wed, Jul 21, 2021, 10:50 PM PDT

UTC

2021-07-22 05:50:32 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

40.470° N, 125.582° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 6.4 km horizontally, 2.0 km in depth

Magnitude uncertainty

±0.06

Depth from

Operator assigned

Station coverage gap

266°, poorly surrounded by stations

Stations used

18

• Ferndale, CaliforniaPopulation 1,369. Forecast112 kmW
• Fortuna, CaliforniaPopulation 12,000. Forecast121 kmW
• Chico, CaliforniaPopulation 121,345. Forecast329 kmWNW

After

1. 2.733km WNW of Petrolia, CAThu, Jul 22, 8:42 PM PDT · 1900 days ago · 23 km deep · 78 km away
2. 2.321km W of Petrolia, CAWed, Jul 28, 2:43 AM PDT · 1894 days ago · 18 km deep · 91 km away
3. 2.547km W of Ferndale, CAThu, Jul 29, 4:03 PM PDT · 1893 days ago · 24 km deep · 65 km away
4. 2.020km WSW of Petrolia, CAFri, Jul 30, 9:17 AM PDT · 1892 days ago · 18 km deep · 93 km away
5. 2.818km W of Petrolia, CASun, Aug 1, 11:34 PM PDT · 1890 days ago · 33 km deep · 94 km away
6. 2.6165 km W of Ferndale, CaliforniaMon, Aug 2, 12:56 AM PDT · 1889 days ago · 12 km deep · 53 km away
7. 3.976km W of Petrolia, CAThu, Aug 5, 8:21 AM PDT · 1886 days ago · 8 km deep · 35 km away · felt by 2
8. 2.760km W of Ferndale, CASat, Aug 7, 5:57 AM PDT · 1884 days ago · 8 km deep · 56 km away
9. 2.988km W of Petrolia, CAWed, Aug 11, 8:00 AM PDT · 1880 days ago · 22 km deep · 23 km away
10. 2.036km WNW of Petrolia, CASun, Aug 15, 1:14 AM PDT · 1876 days ago · 8 km deep · 76 km away
11. 1.816km W of Petrolia, CAMon, Aug 16, 5:20 AM PDT · 1875 days ago · 11 km deep · 96 km away
12. 2.955km WNW of Petrolia, CAFri, Aug 20, 11:45 AM PDT · 1871 days ago · 15 km deep · 56 km away
13. 1.620km W of Petrolia, CASat, Aug 21, 8:50 PM PDT · 1870 days ago · 15 km deep · 91 km away
14. 2.422km NW of Petrolia, CAMon, Aug 30, 12:17 AM PDT · 1861 days ago · 19 km deep · 93 km away
15. 2.650km W of Petrolia, CAFri, Sep 3, 3:25 AM PDT · 1857 days ago · 11 km deep · 61 km away
16. 2.536km W of Petrolia, CATue, Sep 7, 7:35 AM PDT · 1853 days ago · 18 km deep · 75 km away
17. 3.3108km W of Petrolia, CATue, Sep 7, 10:39 AM PDT · 1853 days ago · 10 km deep · 9 km away · felt by 4
18. 2.433km WNW of Petrolia, CAFri, Sep 10, 8:00 PM PDT · 1850 days ago · 22 km deep · 78 km away
19. 2.325km WSW of Petrolia, CASun, Sep 12, 7:20 PM PDT · 1848 days ago · 21 km deep · 90 km away · felt by 1

Before

1. 2.840km WNW of Petrolia, CAWed, Jul 21, 5:25 AM PDT · 1901 days ago · 24 km deep · 72 km away
2. 2.856km WNW of Petrolia, CAWed, Jul 21, 3:36 AM PDT · 1901 days ago · 15 km deep · 56 km away · felt by 3
3. 5.112km W of Petrolia, CASat, Jul 17, 11:46 PM PDT · 1905 days ago · 31 km deep · 99 km away · felt by 751
4. 2.421km W of Petrolia, CAThu, Jul 15, 5:21 AM PDT · 1907 days ago · 8 km deep · 90 km away
5. 3.457km W of Petrolia, CASun, Jul 11, 8:43 PM PDT · 1911 days ago · 6 km deep · 54 km away · felt by 7
6. 3.9104km W of Petrolia, CASun, Jul 11, 5:59 AM PDT · 1911 days ago · 5 km deep · 12 km away · felt by 4
7. 2.022km W of Petrolia, CASat, Jul 10, 3:35 AM PDT · 1912 days ago · 19 km deep · 90 km away
8. 2.821km W of Petrolia, CASat, Jul 10, 3:32 AM PDT · 1912 days ago · 20 km deep · 91 km away
9. 1.722km W of Petrolia, CASun, Jul 4, 1:35 PM PDT · 1918 days ago · 26 km deep · 89 km away
10. 3.1100km W of Petrolia, CASun, Jun 27, 11:57 AM PDT · 1925 days ago · 6 km deep · 11 km away
11. 2.966km W of Petrolia, CAFri, Jun 25, 11:34 PM PDT · 1927 days ago · 8 km deep · 46 km away · felt by 3

From the USGS Earthquake Hazards Program and its partner networks, event us6000exvt. Read Sun, Oct 4, 2026, 6:44 PM UTC.