Colorado earthquakes

M1.5 earthquake 8 km N of Segundo, Colorado

A magnitude 1.5 earthquake struck 8 km N of Segundo, Colorado on Tue, Sep 19, 2023, 7:44 PM MDT (01:44 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.8 7 km NNW of El Moro, Colorado. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
1.5 (ml), micro
Local time
UTC
2023-09-20 01:44:31 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
37.203° N, 104.741° W
Region
Colorado
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.8 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
86°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 47 in the 30 days before it.

After

  1. 2.214 km E of Colorado City, Colorado · 1107 days ago · 5 km deep · 85 km away
  2. 1.5Colorado · 1106 days ago · 5 km deep · 23 km away · felt by 1
  3. 2.87 km NNW of El Moro, Colorado · 1106 days ago · 5 km deep · 24 km away · felt by 8
  4. 1.69 km WNW of Hoehne, Colorado · 1106 days ago · 5 km deep · 26 km away
  5. 1.6Colorado · 1106 days ago · 6 km deep · 25 km away
  6. 2.2Colorado · 1103 days ago · 5 km deep · 37 km away
  7. 1.510 km SSE of Walsenburg, Colorado · 1100 days ago · 5 km deep · 37 km away
  8. 1.613 km ENE of Colorado City, Colorado · 1097 days ago · 5 km deep · 86 km away
  9. 1.612 km S of Weston, Colorado · 1095 days ago · 5 km deep · 23 km away
  10. 1.923 km S of Weston, Colorado · 1094 days ago · 5 km deep · 33 km away
  11. 1.711 km SSE of Walsenburg, Colorado · 1092 days ago · 5 km deep · 37 km away
  12. 1.710 km SE of Walsenburg, Colorado · 1092 days ago · 5 km deep · 39 km away
  13. 1.515 km SSW of Weston, Colorado · 1089 days ago · 5 km deep · 27 km away
  14. 1.513 km S of Stonewall Gap, Colorado · 1084 days ago · 5 km deep · 30 km away
  15. 1.76 km WNW of Hoehne, Colorado · 1084 days ago · 5 km deep · 27 km away
  16. 1.711 km NE of Stonewall Gap, Colorado · 1082 days ago · 5 km deep · 18 km away
  17. 2.89 km NNW of El Moro, Colorado · 1080 days ago · 5 km deep · 24 km away · felt by 4
  18. 1.534 km NNE of Cimarron, New Mexico · 1069 days ago · 5 km deep · 44 km away
  19. 2.016 km SW of Weston, Colorado · 1067 days ago · 5 km deep · 29 km away
  20. 2.017 km S of Weston, Colorado · 1062 days ago · 5 km deep · 27 km away
  21. 1.618 km S of Weston, Colorado · 1062 days ago · 5 km deep · 27 km away
  22. 2.126 km SSW of Segundo, Colorado · 1058 days ago · 5 km deep · 35 km away
  23. 2.026 km SSW of Segundo, Colorado · 1058 days ago · 5 km deep · 35 km away
  24. 1.825 km S of Weston, Colorado · 1058 days ago · 5 km deep · 35 km away
  25. 2.126 km S of Weston, Colorado · 1057 days ago · 5 km deep · 35 km away
  26. 1.67 km WNW of Hoehne, Colorado · 1057 days ago · 5 km deep · 26 km away
  27. 2.032 km S of Weston, Colorado · 1049 days ago · 5 km deep · 42 km away

Before

  1. 2.314 km E of Colorado City, Colorado · 1107 days ago · 5 km deep · 85 km away
  2. 2.413 km E of Colorado City, Colorado · 1107 days ago · 5 km deep · 85 km away
  3. 1.59 km NNW of El Moro, Colorado · 1109 days ago · 5 km deep · 25 km away
  4. 1.79 km NNW of El Moro, Colorado · 1109 days ago · 5 km deep · 24 km away
  5. 2.27 km N of El Moro, Colorado · 1113 days ago · 5 km deep · 25 km away
  6. 1.98 km N of El Moro, Colorado · 1115 days ago · 5 km deep · 26 km away
  7. 1.97 km WNW of Hoehne, Colorado · 1115 days ago · 5 km deep · 28 km away
  8. 1.76 km N of Hoehne, Colorado · 1115 days ago · 5 km deep · 36 km away
  9. 1.78 km N of Segundo, Colorado · 1115 days ago · 7 km deep · 1 km away
  10. 2.59 km SE of Walsenburg, Colorado · 1116 days ago · 5 km deep · 39 km away
  11. 3.47 km N of Valdez, Colorado · 1116 days ago · 7 km deep · 3 km away · felt by 9
  12. 3.68 km NNW of Segundo, Colorado · 1116 days ago · 2 km deep · 4 km away · felt by 26
  13. 2.413 km SSE of Stonewall Gap, Colorado · 1117 days ago · 5 km deep · 28 km away
  14. 1.914 km S of Stonewall Gap, Colorado · 1118 days ago · 5 km deep · 31 km away
  15. 1.816 km S of Stonewall Gap, Colorado · 1118 days ago · 5 km deep · 32 km away
  16. 2.313 km SSE of Stonewall Gap, Colorado · 1118 days ago · 5 km deep · 30 km away
  17. 1.58 km SE of Walsenburg, Colorado · 1119 days ago · 5 km deep · 41 km away
  18. 1.814 km SSE of Stonewall Gap, Colorado · 1120 days ago · 5 km deep · 30 km away
  19. 2.013 km SSE of Stonewall Gap, Colorado · 1120 days ago · 5 km deep · 30 km away
  20. 1.813 km SSE of Stonewall Gap, Colorado · 1120 days ago · 5 km deep · 28 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000lgpz. Read Wed, Sep 30, 2026, 8:08 PM UTC.