Tennessee earthquakes

M1.5 earthquake 1 km SW of Ridgely, Tennessee

A magnitude 1.5 earthquake struck 1 km SW of Ridgely, Tennessee on Thu, Jul 28, 2011, 9:33 AM CDT (14:33 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.4 4 km ENE of Marston, Missouri. This one was a foreshock.

Ridgely forecastMore in Tennessee

Map

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

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The earthquake

Magnitude
1.5 (Md, duration), micro
Magnitude from
NM
Local time
UTC
2011-07-28 14:33:36 UTC
Depth
7.5 km (4.7 mi), shallow
Epicenter
36.254° N, 89.498° W
Region
Tennessee
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 0.6 km horizontally, 1.4 km in depth
Magnitude uncertainty
±0.55
Depth from
From location
Station coverage gap
55°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.08 km SE of Marston, Missouri · 5534 days ago · 8 km deep · 24 km away
  2. 1.84 km NW of New Madrid, Missouri · 5529 days ago · 9 km deep · 41 km away
  3. 2.13 km E of Risco, Missouri · 5525 days ago · 4 km deep · 42 km away
  4. 1.68 km ESE of Marston, Missouri · 5520 days ago · 6 km deep · 28 km away
  5. 1.61 km S of Marston, Missouri · 5517 days ago · 9 km deep · 30 km away
  6. 2.11 km WNW of Cooter, Missouri · 5513 days ago · 8 km deep · 37 km away
  7. 1.65 km WNW of Marston, Missouri · 5512 days ago · 7 km deep · 35 km away
  8. 1.66 km WSW of Tiptonville, Tennessee · 5507 days ago · 9 km deep · 13 km away
  9. 1.97 km NW of Ridgely, Tennessee · 5507 days ago · 10 km deep · 8 km away
  10. 2.03 km SSW of New Madrid, Missouri · 5505 days ago · 5 km deep · 34 km away
  11. 2.44 km ENE of Marston, Missouri · 5490 days ago · 6 km deep · 32 km away · felt by 13
  12. 1.510 km SSE of New Madrid, Missouri · 5490 days ago · 5 km deep · 28 km away
  13. 2.04 km E of Steele, Missouri · 5489 days ago · 9 km deep · 32 km away
  14. 1.87 km SSE of Marston, Missouri · 5489 days ago · 10 km deep · 23 km away

Before

  1. 2.04 km E of Steele, Missouri · 5547 days ago · 6 km deep · 32 km away
  2. 1.68 km WSW of Tiptonville, Tennessee · 5549 days ago · 11 km deep · 12 km away
  3. 2.02 km NW of Marston, Missouri · 5549 days ago · 14 km deep · 34 km away
  4. 1.61 km SE of Ridgely, Tennessee · 5555 days ago · 7 km deep · 2 km away
  5. 1.82 km NNE of Marston, Missouri · 5556 days ago · 9 km deep · 33 km away
  6. 1.64 km S of New Madrid, Missouri · 5562 days ago · 3 km deep · 32 km away
  7. 1.64 km E of Risco, Missouri · 5571 days ago · 8 km deep · 41 km away
  8. 1.66 km SE of Marston, Missouri · 5572 days ago · 8 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nm608983. Read Fri, Oct 2, 2026, 2:35 PM UTC.