QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Atoka, OK

No earthquake was likely felt in Atoka in the 24 hours to 2:10 am CST (08:10 UTC). The last one was M 3.4, 221 km (137 mi) NW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Atoka

This page: a magnitude 2.6 earthquake was recorded 12 km (7 mi) west-northwest of Atoka, OK, at 4:41 am CDT on 13 June 2018 (09:41 UTC), 5.0 km deep.

USGS: 7 km SSW of Lehigh, Oklahoma

4:41 am CDT, Jun 13, 2018 · · 5.0 km deep · released about 240 lb of TNT

10 km30 km60 km120 km N Coal County 19 kmAtoka County 20 kmJohnston County 38 kmBryan County 50 kmPontotoc County 53 kmMarshall County 64 kmHughes County 71 kmPittsburg County 73 kmMurray County 75 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
4:41 am CDT on 13 June 2018 ()
Where
12 km (7 mi) west-northwest of Atoka, OK · earthquakes near Atoka
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.6 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Coal County, 19 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2989 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 51 km (32 mi) from the epicentre. In Atoka, 12 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Coalgate 14 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 34.4130, -96.2541. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Coal County, OK 19 km (12 mi) N earthquakes near Coal County
Atoka County, OK 20 km (12 mi) E earthquakes near Atoka County
Johnston County, OK 38 km (24 mi) WSW earthquakes near Johnston County
Bryan County, OK 50 km (31 mi) S earthquakes near Bryan County
Pontotoc County, OK 53 km (33 mi) NW earthquakes near Pontotoc County
Marshall County, OK 64 km (40 mi) SW earthquakes near Marshall County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

50 earthquakes have been recorded within 50 km since this one.

  1. 1.7 10 km SE of Wapanucka, Oklahoma
  2. 1.7 11 km SSE of Wapanucka, Oklahoma
  3. 1.7 6 km ESE of Mill Creek, Oklahoma
  4. 1.5 11 km N of Kenefic, Oklahoma
  5. 1.8 3 km ESE of Mill Creek, Oklahoma
  6. 2.3 1 km N of Centrahoma, Oklahoma
  7. 1.5 10 km WNW of Caney, Oklahoma
  8. 1.6 10 km W of Caney, Oklahoma
  9. 1.6 12 km SSE of Wapanucka, Oklahoma
  10. 1.6 Oklahoma
  11. 1.7 8 km S of Wapanucka, Oklahoma
  12. 1.5 12 km NNW of Kenefic, Oklahoma
  13. 1.5 4 km SE of Mill Creek, Oklahoma
  14. 1.8 7 km S of Wapanucka, Oklahoma
  15. 1.6 8 km SSE of Wapanucka, Oklahoma

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.