California earthquakes

M1.8 earthquake 3 km NNE of Pacifica, CA

A magnitude 1.8 earthquake struck 3 km NNE of Pacifica, CA on Thu, Sep 17, 2026, 2:32 AM PDT (09:32 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.3 27 km WSW of Westley, CA. This one was a foreshock.

Pacifica forecastMore in California

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
1.8 (md), micro
Local time
UTC
2026-09-17 09:32:12 UTC
Depth
4.3 km (2.7 mi), shallow
Epicenter
37.643° N, 122.475° W
Tsunami flag
No
Status
Reviewed by a seismologist

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

Reviewed by a seismologist.

Location uncertainty
About 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.29
Depth from
From location
Station coverage gap
136°
Stations used
41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 since this one and 39 in the 30 days before it.

After

  1. 1.78 km W of Saint Helena, CA · 12 days ago · 9 km deep · 95 km away
  2. 1.87 km WSW of Saint Helena, CA · 11 days ago · 8 km deep · 95 km away
  3. 2.510 km ENE of Milpitas, CA · 10 days ago · 3 km deep · 63 km away · felt by 9
  4. 2.12 km NE of Pacifica, CA · 10 days ago · 7 km deep · 2 km away · felt by 8
  5. 1.72 km NNE of Pleasant Hill, CA · 9 days ago · 15 km deep · 52 km away
  6. 2.09 km ESE of Livermore, CA · 8 days ago · 10 km deep · 70 km away
  7. 1.73 km ENE of San Rafael, CA · 8 days ago · 11 km deep · 38 km away
  8. 1.58 km E of Alum Rock, CA · 8 days ago · 2 km deep · 73 km away
  9. 2.32 km SE of Pacifica, CA · 8 days ago · 9 km deep · 5 km away · felt by 54
  10. 2.25 km SW of Yountville, CA · 6 days ago · 8 km deep · 82 km away
  11. 1.712 km SE of Livermore, CA · 4 days ago · 1 km deep · 71 km away
  12. 2.21 km E of Port Costa, CA · 3 days ago · 8 km deep · 52 km away · felt by 65
  13. 2.34 km WNW of Orinda, CA · 3 days ago · 4 km deep · 35 km away · felt by 2
  14. 2.41 km SSW of Novato, CA · 3 days ago · 8 km deep · 51 km away
  15. 1.63 km SW of San Ramon, CA · 2 days ago · 8 km deep · 44 km away
  16. 3.327 km WSW of Westley, CA · 2 days ago · 3 km deep · 94 km away · felt by 15
  17. 2.626 km WSW of Westley, CA · 2 days ago · 3 km deep · 93 km away
  18. 1.726 km WSW of Westley, CA · 2 days ago · 4 km deep · 93 km away
  19. 2.25 km SW of Yountville, CA · 42 hr ago · 8 km deep · 81 km away · felt by 3
  20. 2.112 km NNE of Alum Rock, CA · 35 hr ago · 6 km deep · 65 km away · felt by 1
  21. 1.72 km SW of San Ramon, CA · 18 hr ago · 8 km deep · 44 km away
  22. 2.66 km W of Yountville, CA · 6 min ago · 8 km deep · 84 km away · felt by 2

Before

  1. 2.621 km E of Alum Rock, CA · 13 days ago · 7 km deep · 85 km away · felt by 6
  2. 1.93 km W of Dublin, CA · 13 days ago · 10 km deep · 45 km away
  3. 1.52 km N of Berkeley, CA · 13 days ago · 4 km deep · 33 km away
  4. 2.13 km W of Dublin, CA · 13 days ago · 10 km deep · 45 km away
  5. 1.53 km W of Dublin, CA · 13 days ago · 9 km deep · 45 km away
  6. 1.83 km ESE of Santa Rosa, CA · 13 days ago · 9 km deep · 89 km away
  7. 2.63 km ESE of Santa Rosa, CA · 14 days ago · 10 km deep · 90 km away · felt by 171
  8. 1.96 km ENE of Clayton, CA · 14 days ago · 16 km deep · 64 km away
  9. 2.33 km W of Dublin, CA · 14 days ago · 10 km deep · 45 km away · felt by 3
  10. 3.09 km SW of Brentwood, CA · 15 days ago · 17 km deep · 64 km away · felt by 52
  11. 1.71 km ENE of Woodside, CA · 16 days ago · 5 km deep · 31 km away
  12. 1.81 km E of Woodside, CA · 16 days ago · 5 km deep · 31 km away · felt by 5
  13. 2.51 km ESE of Woodside, CA · 16 days ago · 5 km deep · 31 km away · felt by 179
  14. 2.56 km ENE of Blackhawk, CA · 16 days ago · 16 km deep · 60 km away · felt by 5
  15. 3.19 km ENE of Blackhawk, CA · 17 days ago · 16 km deep · 63 km away · felt by 257
  16. 2.13 km WNW of Dublin, CA · 19 days ago · 10 km deep · 45 km away
  17. 2.13 km W of Dublin, CA · 19 days ago · 10 km deep · 45 km away · felt by 1
  18. 2.13 km W of Dublin, CA · 19 days ago · 10 km deep · 45 km away
  19. 2.52 km ESE of Oakland, CA · 20 days ago · 10 km deep · 28 km away · felt by 64
  20. 1.98 km NE of Alum Rock, CA · 20 days ago · 7 km deep · 68 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc75437132. Read Tue, Sep 29, 2026, 4:12 PM UTC.