Kansas earthquakes

M3.6 earthquake 7 km WSW of Gypsum, Kansas

A magnitude 3.6 earthquake struck 7 km WSW of Gypsum, Kansas on Sat, Dec 11, 2021, 8:09 PM CST (02:09 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M4.0 1 km SSW of Gypsum, Kansas. This one was a foreshock.

Lindsborg forecastMore in Kansas

Map

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

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The earthquake

Magnitude
3.6 (mwr), minor
Local time
UTC
2021-12-12 02:09:23 UTC
Depth
5.0 km (3.1 mi), shallow
Epicenter
38.684° N, 97.504° W
Region
Kansas
Felt reports
101
Strongest shaking
IV, light shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
IV, light shaking
Peak ground acceleration
10.9% of gravity
Peak ground velocity
1.4 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

101 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

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

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Strike-slip
Moment magnitude
3.6 Mwr
Nodal plane 1
Strike 120°, dip 80°, rake -20°
Nodal plane 2
Strike 214°, dip 70°, rake -169°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 2.0 km horizontally, 2.0 km in depth
Depth from
Operator assigned
Station coverage gap
97°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.68 km SW of Gypsum, Kansas · 1744 days ago · 5 km deep · 3 km away · felt by 2
  2. 2.56 km SSW of Gypsum, Kansas · 1742 days ago · 5 km deep · 6 km away · felt by 2
  3. 4.01 km SSW of Gypsum, Kansas · 1742 days ago · 3 km deep · 6 km away · felt by 129
  4. 3.57 km ESE of Assaria, Kansas · 1742 days ago · 5 km deep · 3 km away · felt by 20
  5. 3.17 km SW of Gypsum, Kansas · 1742 days ago · 5 km deep · 2 km away · felt by 10
  6. 2.56 km SW of Gypsum, Kansas · 1740 days ago · 5 km deep · 2 km away · felt by 1
  7. 3.35 km SSW of Gypsum, Kansas · 1740 days ago · 2 km deep · 5 km away · felt by 6
  8. 2.4Kansas · 1740 days ago · 5 km deep · 2 km away · felt by 2
  9. 2.66 km WSW of Gypsum, Kansas · 1739 days ago · 5 km deep · 1 km away · felt by 1
  10. 2.74 km E of Assaria, Kansas · 1739 days ago · 5 km deep · 4 km away · felt by 2
  11. 2.02 km SSW of Marion, Kansas · 1731 days ago · 5 km deep · 57 km away · felt by 5
  12. 3.76 km SW of Gypsum, Kansas · 1731 days ago · 5 km deep · 4 km away · felt by 46
  13. 3.77 km WSW of Gypsum, Kansas · 1730 days ago · 5 km deep · 1 km away · felt by 28
  14. 2.56 km WSW of Gypsum, Kansas · 1730 days ago · 5 km deep · 1 km away
  15. 2.58 km SW of Gypsum, Kansas · 1730 days ago · 5 km deep · 2 km away · felt by 7
  16. 2.84 km SW of Gypsum, Kansas · 1729 days ago · 5 km deep · 4 km away · felt by 3
  17. 2.48 km SW of Gypsum, Kansas · 1726 days ago · 5 km deep · 4 km away · felt by 1
  18. 2.58 km SW of Gypsum, Kansas · 1719 days ago · 5 km deep · 5 km away · felt by 6
  19. 3.14 km ESE of Assaria, Kansas · 1716 days ago · 5 km deep · 5 km away · felt by 28
  20. 1.86 km E of Assaria, Kansas · 1711 days ago · 5 km deep · 2 km away · felt by 1
  21. 2.7Kansas · 1711 days ago · 5 km deep · 5 km away · felt by 3
  22. 3.15 km SW of Gypsum, Kansas · 1711 days ago · 5 km deep · 4 km away · felt by 6
  23. 2.55 km WSW of Gypsum, Kansas · 1706 days ago · 4 km deep · 2 km away · felt by 1
  24. 2.46 km SW of Woodbine, Kansas · 1696 days ago · 5 km deep · 43 km away · felt by 3
  25. 2.55 km WSW of Gypsum, Kansas · 1694 days ago · 5 km deep · 2 km away · felt by 3
  26. 2.56 km ENE of Hope, Kansas · 1692 days ago · 5 km deep · 43 km away · felt by 10

Before

  1. 2.56 km WSW of Gypsum, Kansas · 1745 days ago · 5 km deep · 1 km away · felt by 3
  2. 2.6Kansas · 1746 days ago · 5 km deep · 1 km away · felt by 1
  3. 3.05 km WSW of Gypsum, Kansas · 1746 days ago · 3 km deep · 2 km away · felt by 5
  4. 2.48 km S of Gypsum, Kansas · 1747 days ago · 5 km deep · 9 km away · felt by 1
  5. 3.08 km SW of Gypsum, Kansas · 1749 days ago · 5 km deep · 3 km away · felt by 29
  6. 2.66 km SW of Gypsum, Kansas · 1749 days ago · 5 km deep · 3 km away · felt by 3
  7. 4.36 km SSW of Gypsum, Kansas · 1749 days ago · 3 km deep · 6 km away · felt by 812
  8. 2.53 km NNE of Assaria, Kansas · 1753 days ago · 5 km deep · 8 km away
  9. 2.95 km ENE of Assaria, Kansas · 1769 days ago · 2 km deep · 4 km away · felt by 4
  10. 2.64 km SW of Gypsum, Kansas · 1769 days ago · 5 km deep · 3 km away
  11. 2.96 km WSW of Gypsum, Kansas · 1769 days ago · 5 km deep · 0 km away · felt by 15

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000gbjb. Read Tue, Sep 22, 2026, 9:12 AM UTC.