Missouri earthquakes

M2.1 earthquake 3 km E of Risco, Missouri

A magnitude 2.1 earthquake struck 3 km E of Risco, Missouri on Wed, Aug 17, 2011, 3:49 PM CDT (20:49 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.6 6 km E of Grandin, Missouri. This one was a foreshock.

Parma forecastMore in Missouri

Map

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

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The earthquake

Magnitude
2.1 (Md, duration), micro
Magnitude from
NM
Local time
UTC
2011-08-17 20:49:28 UTC
Depth
4.5 km (2.8 mi), shallow
Epicenter
36.560° N, 89.776° W
Region
Missouri
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 0.2 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
45°
Stations used
34

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.68 km ESE of Marston, Missouri · 5519 days ago · 6 km deep · 24 km away
  2. 1.61 km S of Marston, Missouri · 5516 days ago · 9 km deep · 16 km away
  3. 2.11 km WNW of Cooter, Missouri · 5512 days ago · 8 km deep · 57 km away
  4. 1.65 km WNW of Marston, Missouri · 5511 days ago · 7 km deep · 10 km away
  5. 1.66 km WSW of Tiptonville, Tennessee · 5506 days ago · 9 km deep · 30 km away
  6. 1.97 km NW of Ridgely, Tennessee · 5506 days ago · 10 km deep · 35 km away
  7. 2.03 km SSW of New Madrid, Missouri · 5504 days ago · 5 km deep · 21 km away
  8. 2.44 km ENE of Marston, Missouri · 5489 days ago · 6 km deep · 19 km away · felt by 13
  9. 1.510 km SSE of New Madrid, Missouri · 5489 days ago · 5 km deep · 28 km away
  10. 2.04 km E of Steele, Missouri · 5488 days ago · 9 km deep · 53 km away
  11. 3.66 km E of Grandin, Missouri · 5488 days ago · 11 km deep · 91 km away · felt by 680
  12. 1.87 km SSE of Marston, Missouri · 5488 days ago · 10 km deep · 21 km away
  13. 1.76 km NNE of Blytheville, Arkansas · 5484 days ago · 10 km deep · 65 km away
  14. 2.45 km W of Dell, Arkansas · 5483 days ago · 9 km deep · 84 km away · felt by 5
  15. 1.93 km WNW of Marston, Missouri · 5479 days ago · 7 km deep · 12 km away
  16. 1.54 km NNW of Ridgely, Tennessee · 5478 days ago · 8 km deep · 37 km away
  17. 1.511 km N of Tiptonville, Tennessee · 5473 days ago · 5 km deep · 27 km away
  18. 1.68 km WNW of Tiptonville, Tennessee · 5472 days ago · 12 km deep · 26 km away
  19. 1.53 km WNW of Marston, Missouri · 5470 days ago · 8 km deep · 12 km away
  20. 1.913 km SSE of Ridgely, Tennessee · 5467 days ago · 10 km deep · 55 km away
  21. 2.01 km WNW of Howardville, Missouri · 5467 days ago · 5 km deep · 15 km away
  22. 1.96 km ENE of Etowah, Arkansas · 5466 days ago · 5 km deep · 97 km away

Before

  1. 1.84 km NW of New Madrid, Missouri · 5528 days ago · 9 km deep · 20 km away
  2. 2.08 km SE of Marston, Missouri · 5533 days ago · 8 km deep · 24 km away
  3. 1.51 km SW of Ridgely, Tennessee · 5544 days ago · 8 km deep · 42 km away
  4. 2.04 km E of Steele, Missouri · 5547 days ago · 6 km deep · 53 km away
  5. 1.68 km WSW of Tiptonville, Tennessee · 5548 days ago · 11 km deep · 30 km away
  6. 2.02 km NW of Marston, Missouri · 5549 days ago · 14 km deep · 13 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nm608995. Read Thu, Oct 1, 2026, 5:02 PM UTC.