QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Pocahontas, AR

No earthquake was likely felt in Pocahontas in the 24 hours to 5:46 am CST (11:46 UTC). The last one was M 4.0, 105 km (65 mi) ESE, at 12:59 pm CDT on 23 April 2026, estimated intensity III (weak) in town; 913 felt reports to USGS. Every earthquake near Pocahontas

This page: a magnitude 2.5 earthquake was recorded 15 km (9 mi) north-northeast of Pocahontas, AR, at 11:49 am CST on 14 November 2022 (17:49 UTC), 12 km deep.

USGS: 4 km SSW of Maynard, Arkansas

11:49 am CST, Nov 14, 2022 · · 12 km deep · released about 170 lb of TNT

10 km30 km60 km120 km N Randolph County 12 kmRipley County 30 kmLawrence County 42 kmGreene County 42 kmClay County 44 kmOregon County 55 kmSharp County 55 kmButler County 58 kmCarter County 63 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
11:49 am CST on 14 November 2022 ()
Where
15 km (9 mi) north-northeast of Pocahontas, AR · earthquakes near Pocahontas
Magnitude
M 2.5 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Randolph County, 12 km WSW
Nearest mapped fault
Western Lowlands liquefaction features, 9 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1383 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 45 km (28 mi) from the epicentre. In Pocahontas, 15 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: Pocahontas 15 km, intensity III · Doniphan 28 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 36.3832, -90.9102. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Randolph County, AR 12 km (7 mi) WSW earthquakes near Randolph County
Ripley County, MO 30 km (19 mi) N earthquakes near Ripley County
Lawrence County, AR 42 km (26 mi) SSW earthquakes near Lawrence County
Greene County, AR 42 km (26 mi) SE earthquakes near Greene County
Clay County, AR 44 km (27 mi) E earthquakes near Clay County
Oregon County, MO 55 km (34 mi) NW earthquakes near Oregon County

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

Aftershocks so far

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

  1. 2.2 4 km SSE of Maynard, Arkansas
  2. 2.1 6 km ENE of Smithville, Arkansas
  3. 1.7 10 km NW of Smithville, Arkansas
  4. 2.9 12 km WSW of Grandin, Missouri
  5. 2.2 13 km W of Maynard, Arkansas
  6. 2.2 8 km SW of Williford, Arkansas
  7. 1.8 8 km SW of Williford, Arkansas
  8. 2.5 4 km E of Doniphan, Missouri
  9. 2.7 5 km E of Doniphan, Missouri
  10. 2.3 5 km SE of Imboden, Arkansas
  11. 2.0 6 km N of Black Rock, Arkansas
  12. 2.1 8 km NE of Smithville, Arkansas
  13. 2.0 4 km NNW of Minturn, Arkansas
  14. 1.8 2 km SW of Ravenden, Arkansas
  15. 2.0 5 km N of Black Rock, Arkansas

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.