California earthquakes

M1.0 earthquake 2 km NNE of Colton, CA

A magnitude 1.0 earthquake struck 2 km NNE of Colton, CA on Sun, Sep 20, 2026, 9:50 AM PDT (16:50 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M1.9 15 km N of Cabazon, CA. This one was a foreshock.

Colton 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
1.0 (ml), micro
Local time
UTC
2026-09-20 16:50:44 UTC
Depth
14.3 km (8.9 mi), shallow
Epicenter
34.088° N, 117.303° 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
±0.20
Depth from
From location
Station coverage gap
34°
Stations used
49

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 6 since this one and 76 in the 30 days before it.

After

  1. 1.915 km N of Cabazon, CA · 3 days ago · 13 km deep · 49 km away
  2. 2.05 km NW of Highland, CA · 36 hr ago · 3 km deep · 10 km away · felt by 14
  3. 1.512 km SSE of Anza, CA · 25 hr ago · 8 km deep · 94 km away
  4. 1.76 km SW of Idyllwild, CA · 24 hr ago · 16 km deep · 66 km away
  5. 2.69 km WNW of Anza, CA · 23 hr ago · 13 km deep · 75 km away · felt by 6
  6. 2.18 km WNW of Anza, CA · 4 hr ago · 12 km deep · 75 km away

Before

  1. 1.92 km ENE of Colton, CA · 4 days ago · 15 km deep · 1 km away
  2. 1.64 km SW of Paramount, CA · 5 days ago · 10 km deep · 86 km away
  3. 1.66 km SE of Valle Vista, CA · 6 days ago · 15 km deep · 60 km away
  4. 2.94 km SSE of Compton, CA · 7 days ago · 13 km deep · 87 km away · felt by 516
  5. 1.540 km SW of Ludlow, CA · 9 days ago · 1 km deep · 87 km away
  6. 1.61 km NE of La Habra, CA · 10 days ago · 8 km deep · 61 km away
  7. 2.08 km SW of Anza, CA · 11 days ago · 3 km deep · 82 km away
  8. 1.74 km ENE of Hawthorne, CA · 12 days ago · 20 km deep · 95 km away
  9. 1.63 km E of Lennox, CA · 12 days ago · 20 km deep · 95 km away
  10. 1.68 km SSE of Redlands, CA · 12 days ago · 14 km deep · 18 km away
  11. 1.63 km SE of Inglewood, CA · 12 days ago · 19 km deep · 95 km away
  12. 1.73 km E of Lennox, CA · 12 days ago · 20 km deep · 95 km away
  13. 1.83 km E of Lennox, CA · 12 days ago · 20 km deep · 95 km away
  14. 2.64 km E of Lennox, CA · 12 days ago · 19 km deep · 94 km away · felt by 23
  15. 1.74 km E of Lennox, CA · 12 days ago · 20 km deep · 94 km away
  16. 1.64 km ESE of Lennox, CA · 12 days ago · 21 km deep · 95 km away
  17. 1.74 km ESE of Lennox, CA · 12 days ago · 21 km deep · 95 km away
  18. 1.64 km E of Lennox, CA · 12 days ago · 20 km deep · 95 km away
  19. 1.74 km ESE of Lennox, CA · 12 days ago · 21 km deep · 94 km away
  20. 1.95 km N of Gardena, CA · 12 days ago · 19 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci41335607. Read Thu, Sep 24, 2026, 10:12 AM UTC.