QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

Earthquake near Conway, AR

No earthquake was likely felt in Conway in the 24 hours to 1:30 am CST (07:30 UTC). The last one was M 2.1, 28 km (18 mi) ENE, at 5:55 am CDT on 28 September 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Conway

This page: a magnitude 1.8 earthquake was recorded 35 km (22 mi) northwest of Conway, AR, at 12:40 am CDT on 16 July 2022 (05:40 UTC), 3.0 km deep.

USGS: 9 km WSW of Center Ridge, Arkansas

75 km (46 mi) NNW of Little Rock, AR · 35 km (22 mi) NNW of Conway, AR

12:40 am CDT, Jul 16, 2022 · · 3.0 km deep · released about 13 lb of TNT

10 km30 km60 km120 km N Conway County 10 kmVan Buren County 29 kmPope County 35 kmFaulkner County 37 kmPerry County 51 kmSearcy County 61 kmCleburne County 65 kmPulaski County 72 kmStone County 74 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
12:40 am CDT on 16 July 2022 ()
Where
35 km (22 mi) northwest of Conway, AR · earthquakes near Conway
Magnitude
M 1.8 (md)
Depth
3.0 km below the surface
Felt
no reports yet
Nearest
Conway County, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1580 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 15 km (9 mi) from the epicentre. In Conway, 35 km away, the estimate is intensity II (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.

Earthquakes near other towns within 30 km: Morrilton, Atkins, Greenbrier.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 35.3493, -92.6623. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Conway County, AR 10 km (6 mi) SSW earthquakes near Conway County
Van Buren County, AR 29 km (18 mi) NNE earthquakes near Van Buren County
Pope County, AR 35 km (22 mi) WNW earthquakes near Pope County
Faulkner County, AR 37 km (23 mi) SE earthquakes near Faulkner County
Perry County, AR 51 km (32 mi) SSW earthquakes near Perry County
Searcy County, AR 61 km (38 mi) N earthquakes near Searcy County

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

Aftershocks so far

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

  1. 2.1 3 km E of Enola, Arkansas
  2. 2.0 17 km NNE of Hector, Arkansas
  3. 2.0 4 km SSE of Hector, Arkansas
  4. 2.3 3 km NW of Mount Vernon, Arkansas
  5. 2.3 3 km NE of Greenbrier, Arkansas
  6. 2.0 3 km SSE of Guy, Arkansas
  7. 2.0 1 km SW of Pottsville, Arkansas
  8. 2.4 11 km W of Clinton, Arkansas
  9. 1.8 2 km WNW of Enola, Arkansas
  10. 2.2 10 km WSW of Center Ridge, Arkansas
  11. 1.9 5 km W of Damascus, Arkansas
  12. 2.1 5 km NNE of Greenbrier, Arkansas
  13. 1.8 6 km SSW of Perryville, Arkansas
  14. 2.0 8 km SW of Perryville, Arkansas
  15. 2.3 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.