QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Harrison, AR

No earthquake was likely felt in Harrison in the 24 hours to 7:25 pm CST (01:25 UTC). The last one was M 5.0, 708 km (440 mi) W, at 5:21 am CDT on 23 July 2026, estimated intensity II (weak) in town; 499 felt reports to USGS. Every earthquake near Harrison

This page: a magnitude 2.9 earthquake was recorded 19 km (12 mi) north-northeast of Harrison, AR, at 9:28 pm CDT on 15 June 2017 (02:28 UTC), 5.7 km deep. 174 people have reported feeling it to USGS.

USGS: 6 km N of Bergman, Arkansas

95 km (59 mi) SSE of Springfield, MO

9:28 pm CDT, Jun 15, 2017 · · 5.7 km deep · released about 650 lb of TNT

10 km30 km60 km120 km N Boone County 11 kmMarion County 31 kmTaney County 31 kmCarroll County 49 kmNewton County 55 kmOzark County 57 kmStone County 58 kmSearcy County 59 kmBaxter County 60 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
9:28 pm CDT on 15 June 2017 ()
Where
19 km (12 mi) north-northeast of Harrison, AR · earthquakes near Harrison
Magnitude
M 2.9 (md)
Depth
5.7 km below the surface
Felt
174 reports · strongest reported intensity IV
Nearest
Boone County, 11 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2684 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 66 km (41 mi) from the epicentre. In Harrison, 19 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: Harrison 19 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 650 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 23,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 650 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 36.3738, -92.9950. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Boone County, AR 11 km (7 mi) SW earthquakes near Boone County
Marion County, AR 31 km (19 mi) ESE earthquakes near Marion County
Taney County, MO 31 km (19 mi) N earthquakes near Taney County
Carroll County, AR 49 km (30 mi) W earthquakes near Carroll County
Newton County, AR 55 km (34 mi) SSW earthquakes near Newton County
Ozark County, MO 57 km (35 mi) ENE earthquakes near Ozark County

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

Aftershocks so far

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

  1. 2.5 14 km E of South Lead Hill, Arkansas
  2. 2.3 14 km E of South Lead Hill, Arkansas
  3. 2.1 4 km N of Midway, Arkansas
  4. 1.7 13 km E of South Lead Hill, Arkansas
  5. 2.2 15 km WNW of Bull Shoals, Arkansas
  6. 2.3 14 km E of South Lead Hill, Arkansas
  7. 2.4 14 km E of South Lead Hill, Arkansas
  8. 2.0 13 km E of South Lead Hill, Arkansas
  9. 2.5 13 km E of South Lead Hill, Arkansas
  10. 1.9 13 km E of South Lead Hill, Arkansas
  11. 1.8 13 km ENE of South Lead Hill, Arkansas
  12. 2.2 13 km SW of Alpena, Arkansas
  13. 2.1 11 km SW of Pontiac, Missouri
  14. 2.0 Missouri-Arkansas border region
  15. 2.2 6 km E of Diamond City, 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.