California earthquakes

M0.8 earthquake 4 km W of Cobb, CA

A magnitude 0.8 earthquake struck 4 km W of Cobb, CA on Sun, Sep 20, 2026, 6:17 AM PDT (13:17 UTC), 2 km (1 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M2.1 9 km WNW of The Geysers, CA. This one was a foreshock.

Cobb forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
0.8 (md), micro
Local time
UTC
2026-09-20 13:17:04 UTC
Depth
2.2 km (1.4 mi), shallow
Epicenter
38.818° N, 122.765° W
Tsunami flag
No
Status
Automatic solution, may be revised

Did you feel it?

No one has reported feeling this quake to the USGS. If you felt it, tell the USGS: every report sharpens the shaking map.

How well it is located

An automatic solution; a seismologist may revise it.

Location uncertainty
About 0.3 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
110°
Stations used
14

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 5 since this one and 114 in the 30 days before it.

After

  1. 2.19 km WNW of The Geysers, CA · 42 hr ago · 2 km deep · 7 km away
  2. 1.87 km NW of The Geysers, CA · 39 hr ago · 2 km deep · 4 km away
  3. 1.78 km ESE of Cloverdale, CA · 38 hr ago · 7 km deep · 15 km away
  4. 1.73 km ENE of San Rafael, CA · 30 hr ago · 11 km deep · 96 km away
  5. 2.15 km WNW of The Geysers, CA · 22 hr ago · 2 km deep · 4 km away · felt by 3

Before

  1. 1.78 km ESE of Cloverdale, CA · 3 days ago · 5 km deep · 15 km away
  2. 1.87 km WNW of Cobb, CA · 3 days ago · 2 km deep · 4 km away
  3. 1.914 km S of Willits, CA · 4 days ago · 0 km deep · 74 km away
  4. 1.87 km W of Saint Helena, CA · 4 days ago · 9 km deep · 41 km away
  5. 1.54 km W of Cobb, CA · 4 days ago · 2 km deep · 1 km away
  6. 1.88 km W of Saint Helena, CA · 4 days ago · 8 km deep · 40 km away
  7. 1.711 km W of Lake Pillsbury, CA · 5 days ago · -1 km deep · 69 km away
  8. 1.93 km ENE of The Geysers, CA · 6 days ago · 1 km deep · 5 km away
  9. 1.94 km ESE of Santa Rosa, CA · 6 days ago · 8 km deep · 44 km away
  10. 1.68 km NW of The Geysers, CA · 6 days ago · 2 km deep · 5 km away
  11. 1.63 km W of Anderson Springs, CA · 6 days ago · 2 km deep · 6 km away
  12. 1.64 km ESE of Santa Rosa, CA · 6 days ago · 8 km deep · 43 km away
  13. 2.73 km ESE of Santa Rosa, CA · 6 days ago · 9 km deep · 44 km away · felt by 171
  14. 1.78 km ESE of Cloverdale, CA · 6 days ago · 5 km deep · 16 km away
  15. 1.77 km W of Cobb, CA · 7 days ago · 2 km deep · 4 km away
  16. 1.65 km ESE of Boonville, CA · 7 days ago · 3 km deep · 51 km away
  17. 1.61 km ESE of The Geysers, CA · 7 days ago · 2 km deep · 5 km away
  18. 1.65 km NW of The Geysers, CA · 8 days ago · 3 km deep · 2 km away
  19. 2.28 km N of Redwood Valley, CA · 8 days ago · 4 km deep · 69 km away · felt by 1
  20. 1.79 km NW of The Geysers, CA · 9 days ago · 2 km deep · 7 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc75438907. Read Tue, Sep 22, 2026, 11:23 AM UTC.