Colorado earthquakes

M1.5 earthquake Colorado

A magnitude 1.5 earthquake struck in Colorado on Wed, Sep 20, 2023, 5:33 AM MDT (11:33 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.

Trinidad forecastMore in Colorado

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, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-09-20 11:33:47 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
37.276° N, 104.494° W
Region
Colorado
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.6 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
72°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 49 in the 30 days before it.

After

  1. 2.87 km NNW of El Moro, Colorado · 1109 days ago · 5 km deep · 2 km away · felt by 8
  2. 1.69 km WNW of Hoehne, Colorado · 1109 days ago · 5 km deep · 4 km away
  3. 1.6Colorado · 1109 days ago · 6 km deep · 4 km away
  4. 2.2Colorado · 1106 days ago · 5 km deep · 35 km away
  5. 1.510 km SSE of Walsenburg, Colorado · 1103 days ago · 5 km deep · 36 km away
  6. 1.613 km ENE of Colorado City, Colorado · 1100 days ago · 5 km deep · 79 km away
  7. 1.612 km S of Weston, Colorado · 1098 days ago · 5 km deep · 43 km away
  8. 1.923 km S of Weston, Colorado · 1097 days ago · 5 km deep · 51 km away
  9. 1.711 km SSE of Walsenburg, Colorado · 1095 days ago · 5 km deep · 35 km away
  10. 1.710 km SE of Walsenburg, Colorado · 1094 days ago · 5 km deep · 35 km away
  11. 1.515 km SSW of Weston, Colorado · 1092 days ago · 5 km deep · 47 km away
  12. 1.513 km S of Stonewall Gap, Colorado · 1087 days ago · 5 km deep · 53 km away
  13. 1.76 km WNW of Hoehne, Colorado · 1087 days ago · 5 km deep · 4 km away
  14. 1.711 km NE of Stonewall Gap, Colorado · 1085 days ago · 5 km deep · 40 km away
  15. 2.89 km NNW of El Moro, Colorado · 1083 days ago · 5 km deep · 3 km away · felt by 4
  16. 1.534 km NNE of Cimarron, New Mexico · 1072 days ago · 5 km deep · 59 km away
  17. 2.016 km SW of Weston, Colorado · 1070 days ago · 5 km deep · 51 km away
  18. 2.017 km S of Weston, Colorado · 1065 days ago · 5 km deep · 46 km away
  19. 1.618 km S of Weston, Colorado · 1065 days ago · 5 km deep · 46 km away
  20. 2.126 km SSW of Segundo, Colorado · 1061 days ago · 5 km deep · 52 km away
  21. 2.026 km SSW of Segundo, Colorado · 1060 days ago · 5 km deep · 52 km away
  22. 1.825 km S of Weston, Colorado · 1060 days ago · 5 km deep · 52 km away
  23. 2.126 km S of Weston, Colorado · 1060 days ago · 5 km deep · 52 km away
  24. 1.67 km WNW of Hoehne, Colorado · 1060 days ago · 5 km deep · 3 km away
  25. 2.032 km S of Weston, Colorado · 1052 days ago · 5 km deep · 58 km away

Before

  1. 2.214 km E of Colorado City, Colorado · 1109 days ago · 5 km deep · 78 km away
  2. 1.58 km N of Segundo, Colorado · 1110 days ago · 5 km deep · 23 km away
  3. 2.314 km E of Colorado City, Colorado · 1110 days ago · 5 km deep · 79 km away
  4. 2.413 km E of Colorado City, Colorado · 1110 days ago · 5 km deep · 79 km away
  5. 1.59 km NNW of El Moro, Colorado · 1112 days ago · 5 km deep · 4 km away
  6. 1.79 km NNW of El Moro, Colorado · 1112 days ago · 5 km deep · 3 km away
  7. 1.811 km SSW of Fowler, Colorado · 1113 days ago · 5 km deep · 92 km away
  8. 2.27 km N of El Moro, Colorado · 1116 days ago · 5 km deep · 2 km away
  9. 1.98 km N of El Moro, Colorado · 1118 days ago · 5 km deep · 3 km away
  10. 1.97 km WNW of Hoehne, Colorado · 1118 days ago · 5 km deep · 5 km away
  11. 1.76 km N of Hoehne, Colorado · 1118 days ago · 5 km deep · 13 km away
  12. 1.78 km N of Segundo, Colorado · 1118 days ago · 7 km deep · 24 km away
  13. 2.59 km SE of Walsenburg, Colorado · 1119 days ago · 5 km deep · 36 km away
  14. 3.47 km N of Valdez, Colorado · 1119 days ago · 7 km deep · 22 km away · felt by 9
  15. 3.68 km NNW of Segundo, Colorado · 1119 days ago · 2 km deep · 27 km away · felt by 26
  16. 2.413 km SSE of Stonewall Gap, Colorado · 1120 days ago · 5 km deep · 50 km away
  17. 1.914 km S of Stonewall Gap, Colorado · 1121 days ago · 5 km deep · 54 km away
  18. 1.816 km S of Stonewall Gap, Colorado · 1121 days ago · 5 km deep · 54 km away
  19. 2.313 km SSE of Stonewall Gap, Colorado · 1121 days ago · 5 km deep · 53 km away
  20. 1.58 km SE of Walsenburg, Colorado · 1122 days ago · 5 km deep · 37 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kwvh. Read Sat, Oct 3, 2026, 4:47 PM UTC.