M1.5 earthquake 4 km W of Cobb, CA

Magnitude

1.5 (md), micro

Local time

Fri, Sep 18, 2026, 1:53 AM PDT

UTC

2026-09-18 08:53:05 UTC

Depth

2.0 km (1.2 mi), shallow

Epicenter

38.823° N, 122.767° W

Region

California

Tsunami flag

No

Status

Automatic solution, may be revised

Location uncertainty

About 0.2 km horizontally, 0.3 km in depth

Magnitude uncertainty

±0.12

Depth from

From location

Station coverage gap

50°

Stations used

28

• Cobb, CaliforniaPopulation 1,778. Forecast4 kmW
• Clearlake, CaliforniaPopulation 15,182. Forecast19 kmSW
• Santa Rosa, CaliforniaPopulation 178,127. Forecast43 kmN
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast667 kmNW

After

1. 1.87 km W of Saint Helena, CAFri, Sep 18, 3:35 AM PDT · 4 days ago · 9 km deep · 41 km away
2. 1.914 km S of Willits, CAFri, Sep 18, 3:17 PM PDT · 4 days ago · 0 km deep · 74 km away
3. 1.87 km WNW of Cobb, CASat, Sep 19, 4:53 AM PDT · 3 days ago · 2 km deep · 3 km away
4. 1.78 km ESE of Cloverdale, CASat, Sep 19, 8:31 AM PDT · 3 days ago · 5 km deep · 15 km away
5. 2.19 km WNW of The Geysers, CASun, Sep 20, 10:03 AM PDT · 2 days ago · 2 km deep · 7 km away
6. 1.87 km NW of The Geysers, CASun, Sep 20, 1:37 PM PDT · 2 days ago · 2 km deep · 4 km away
7. 1.78 km ESE of Cloverdale, CASun, Sep 20, 2:52 PM PDT · 2 days ago · 7 km deep · 15 km away
8. 1.73 km ENE of San Rafael, CASun, Sep 20, 10:41 PM PDT · 40 hr ago · 11 km deep · 97 km away
9. 2.15 km WNW of The Geysers, CAMon, Sep 21, 6:27 AM PDT · 32 hr ago · 2 km deep · 5 km away · felt by 3
10. 1.55 km NNW of The Geysers, CATue, Sep 22, 2:14 PM PDT · 29 min ago · 1 km deep · 2 km away

Before

1. 1.88 km W of Saint Helena, CAThu, Sep 17, 7:12 PM PDT · 5 days ago · 8 km deep · 41 km away
2. 1.711 km W of Lake Pillsbury, CAThu, Sep 17, 2:59 AM PDT · 6 days ago · -1 km deep · 69 km away
3. 1.93 km ENE of The Geysers, CAWed, Sep 16, 3:12 PM PDT · 6 days ago · 1 km deep · 5 km away
4. 1.94 km ESE of Santa Rosa, CAWed, Sep 16, 5:21 AM PDT · 6 days ago · 8 km deep · 44 km away
5. 1.68 km NW of The Geysers, CAWed, Sep 16, 4:36 AM PDT · 6 days ago · 2 km deep · 5 km away
6. 1.63 km W of Anderson Springs, CAWed, Sep 16, 12:31 AM PDT · 7 days ago · 2 km deep · 7 km away
7. 1.64 km ESE of Santa Rosa, CATue, Sep 15, 7:00 PM PDT · 7 days ago · 8 km deep · 44 km away
8. 2.73 km ESE of Santa Rosa, CATue, Sep 15, 6:40 PM PDT · 7 days ago · 9 km deep · 44 km away · felt by 171
9. 1.78 km ESE of Cloverdale, CATue, Sep 15, 6:33 PM PDT · 7 days ago · 5 km deep · 16 km away
10. 1.77 km W of Cobb, CATue, Sep 15, 11:01 AM PDT · 7 days ago · 2 km deep · 4 km away
11. 1.65 km ESE of Boonville, CATue, Sep 15, 2:37 AM PDT · 8 days ago · 3 km deep · 51 km away
12. 1.61 km ESE of The Geysers, CAMon, Sep 14, 5:02 PM PDT · 8 days ago · 2 km deep · 6 km away
13. 1.65 km NW of The Geysers, CAMon, Sep 14, 2:21 AM PDT · 9 days ago · 3 km deep · 2 km away
14. 2.28 km N of Redwood Valley, CASun, Sep 13, 5:37 PM PDT · 9 days ago · 4 km deep · 68 km away · felt by 1
15. 1.79 km NW of The Geysers, CASun, Sep 13, 3:15 PM PDT · 9 days ago · 2 km deep · 7 km away
16. 1.99 km ENE of Brooktrails, CASun, Sep 13, 10:37 AM PDT · 9 days ago · 8 km deep · 86 km away
17. 2.56 km E of Willits, CASun, Sep 13, 6:55 AM PDT · 9 days ago · 5 km deep · 80 km away · felt by 17
18. 1.87 km WNW of The Geysers, CASat, Sep 12, 1:23 PM PDT · 10 days ago · 3 km deep · 5 km away
19. 1.86 km WNW of The Geysers, CASat, Sep 12, 12:50 PM PDT · 10 days ago · 3 km deep · 5 km away
20. 2.84 km W of Cobb, CASat, Sep 12, 11:39 AM PDT · 10 days ago · 1 km deep · 0 km away · felt by 3

From the USGS Earthquake Hazards Program and its partner networks, event nc75437702. Read Tue, Sep 22, 2026, 9:44 PM UTC.