QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Conway, AR

USGS: 4 km WNW of Enola, Arkansas

55 km (34 mi) N of Little Rock, AR · 25 km (15 mi) NE of Conway, AR

8:11 pm CST, Dec 29, 2020 · · 4.8 km deep · released about 85 lb of TNT

Every earthquake near Conway Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Faulkner County 10 kmConway County 40 kmWhite County 45 kmVan Buren County 48 kmCleburne County 48 kmPulaski County 49 kmLonoke County 60 kmPerry County 68 kmStone County 73 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
8:11 pm CST on 29 December 2020 ()
Where
22 km (14 mi) NE of Conway, AR · earthquakes near Conway
Magnitude
M 2.3 (md)
Depth
4.8 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Faulkner County, 10 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2036 days ago

A magnitude 2.3 earthquake was recorded 22 km (14 mi) NE of Conway, AR, at 8:11 pm CST on 29 December 2020 (02:11 UTC). 1 person has reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Greenbrier, Vilonia.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 35.2077, -92.2505. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Faulkner County, AR 10 km (6 mi) SW earthquakes near Faulkner County
Conway County, AR 40 km (25 mi) W earthquakes near Conway County
White County, AR 45 km (28 mi) E earthquakes near White County
Van Buren County, AR 48 km (30 mi) NNW earthquakes near Van Buren County
Cleburne County, AR 48 km (30 mi) NNE earthquakes near Cleburne County
Pulaski County, AR 49 km (30 mi) S earthquakes near Pulaski County

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

Aftershocks so far

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

  1. 2.1 3 km E of Enola, Arkansas
  2. 1.8 3 km NNE of Tumbling Shoals, Arkansas
  3. 2.3 3 km NW of Mount Vernon, Arkansas
  4. 1.7 8 km SW of Heber Springs, Arkansas
  5. 2.3 3 km NE of Greenbrier, Arkansas
  6. 2.0 3 km SSE of Guy, Arkansas
  7. 1.8 2 km WNW of Enola, Arkansas
  8. 2.2 10 km WSW of Center Ridge, Arkansas
  9. 1.9 5 km W of Damascus, Arkansas
  10. 2.1 5 km NNE of Greenbrier, Arkansas
  11. 2.0 Arkansas
  12. 2.3 6 km ESE of Center Ridge, Arkansas
  13. 1.7 1 km ENE of Enola, Arkansas
  14. 1.6 3 km WNW of Greenbrier, Arkansas
  15. 1.8 9 km WSW of Center Ridge, 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.