QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

4 km NNW of Strawberry, Arkansas

· 8.2 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lawrence County 21 kmSharp County 23 kmIndependence County 36 kmJackson County 46 kmRandolph County 47 kmIzard County 53 kmFulton County 61 kmCraighead County 66 kmGreene County 70 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
Magnitude
M 1.8 (md)
Depth
8.2 km below the surface
Felt
no reports yet
Nearest
Lawrence County, 21 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 37 days ago

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

How big was it?

This earthquake released about 16 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 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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.

Where

Epicentre 36.0022, -91.3350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lawrence County, AR 21 km (13 mi) WSW of here earthquakes near Lawrence County
Sharp County, AR 23 km (14 mi) SSE of here earthquakes near Sharp County
Independence County, AR 36 km (22 mi) NE of here earthquakes near Independence County
Jackson County, AR 46 km (29 mi) NNW of here earthquakes near Jackson County
Randolph County, AR 47 km (29 mi) SW of here earthquakes near Randolph County
Izard County, AR 53 km (33 mi) E of here earthquakes near Izard County

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

Aftershocks so far

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

  1. 1.9 2 km N of Strawberry, Arkansas
  2. 1.7 3 km NW of Mount Pleasant, Arkansas
  3. 1.8 3 km NW of Mount Pleasant, Arkansas
  4. 2.4 4 km WNW of Mount Pleasant, Arkansas
  5. 2.1 3 km NW of Mount Pleasant, Arkansas
  6. 2.2 3 km N of Strawberry, Arkansas
  7. 1.6 3 km NE of Strawberry, 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.