QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Mountain View, AR

USGS: 13 km SW of Mountain View, Arkansas

3:05 am CDT, Sep 22, 2017 · · 11 km deep · released about 62 lb of TNT

Every earthquake near Mountain View Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Stone County 12 kmCleburne County 30 kmVan Buren County 34 kmSearcy County 43 kmIzard County 45 kmBaxter County 55 kmIndependence County 62 kmMarion County 66 kmConway County 71 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
3:05 am CDT on 22 September 2017 ()
Where
14 km (9 mi) SW of Mountain View, AR · earthquakes near Mountain View
Magnitude
M 2.2 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Stone County, 12 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3298 days ago

A magnitude 2.2 earthquake was recorded 14 km (9 mi) SW of Mountain View, AR, at 3:05 am CDT on 22 September 2017 (08:05 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Fairfield Bay, Clinton.

How big was it?

This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 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 35.7905, -92.2390. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Stone County, AR 12 km (7 mi) NE earthquakes near Stone County
Cleburne County, AR 30 km (19 mi) SE earthquakes near Cleburne County
Van Buren County, AR 34 km (21 mi) SW earthquakes near Van Buren County
Searcy County, AR 43 km (27 mi) WNW earthquakes near Searcy County
Izard County, AR 45 km (28 mi) NE earthquakes near Izard County
Baxter County, AR 55 km (34 mi) N earthquakes near Baxter County

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

Aftershocks so far

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

  1. 1.7 3 km NW of Mount Pleasant, Arkansas
  2. 1.8 3 km NW of Mount Pleasant, Arkansas
  3. 2.4 4 km WNW of Mount Pleasant, Arkansas
  4. 2.1 3 km NW of Mount Pleasant, Arkansas
  5. 1.8 3 km NNE of Tumbling Shoals, Arkansas
  6. 1.7 8 km SW of Heber Springs, Arkansas
  7. 2.4 11 km W of Clinton, Arkansas
  8. 1.9 13 km SSE of Guion, Arkansas
  9. 2.0 Arkansas
  10. 1.8 11 km WSW of Melbourne, Arkansas
  11. 2.1 6 km WSW of Leslie, Arkansas
  12. 2.3 4 km NW of Mount Pleasant, Arkansas
  13. 2.1 4 km NW of Mount Pleasant, Arkansas
  14. 2.4 10 km NE of Damascus, Arkansas
  15. 2.2 10 km NE of Damascus, 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.