QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Wellington, KS

No earthquake was likely felt in Wellington in the 24 hours to 2:07 am CST (08:07 UTC). The last one was M 3.4, 194 km (120 mi) SSW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Wellington

This page: a magnitude 1.8 earthquake was recorded 40 km (25 mi) west of Wellington, KS, at 12:32 pm CDT on 29 June 2016 (17:32 UTC), 1.8 km deep.

USGS: 5 km W of Argonia, Kansas

63 km (39 mi) SW of Wichita, KS

12:32 pm CDT, Jun 29, 2016 · · 1.8 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Harper County 23 kmSumner County 30 kmKingman County 42 kmGrant County 54 kmSedgwick County 56 kmAlfalfa County 75 kmBarber County 76 kmReno County 78 kmKay County 79 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
12:32 pm CDT on 29 June 2016 ()
Where
40 km (25 mi) west of Wellington, KS · earthquakes near Wellington
Magnitude
M 1.8 (ml)
Depth
1.8 km below the surface
Felt
no reports yet
Nearest
Harper County, 23 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3775 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 16 km (10 mi) from the epicentre. In Wellington, 40 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: Harper, Conway Springs, Anthony.

How big was it?

This earthquake released about 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 37.2722, -97.8248. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Harper County, KS 23 km (15 mi) WSW earthquakes near Harper County
Sumner County, KS 30 km (18 mi) E earthquakes near Sumner County
Kingman County, KS 42 km (26 mi) NW earthquakes near Kingman County
Grant County, OK 54 km (33 mi) S earthquakes near Grant County
Sedgwick County, KS 56 km (35 mi) NE earthquakes near Sedgwick County
Alfalfa County, OK 75 km (46 mi) SW earthquakes near Alfalfa County

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

Aftershocks so far

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

  1. 2.0 5 km NNE of Bluff City, Kansas
  2. 1.9 6 km ENE of Caldwell, Kansas
  3. 2.0 1 km NNE of Manchester, Oklahoma
  4. 1.8 9 km SE of Bluff City, Kansas
  5. 2.3 9 km SE of Bluff City, Kansas
  6. 1.6 2 km E of Anthony, Kansas
  7. 2.2 2 km SE of Milan, Kansas
  8. 2.6 6 km N of Wakita, Oklahoma
  9. 1.6 2 km SSW of Anthony, Kansas
  10. 1.7 5 km NE of Danville, Kansas
  11. 1.6 5 km NNE of Bluff City, Kansas
  12. 2.0 6 km ENE of Renfrow, Oklahoma
  13. 1.5 6 km E of Manchester, Oklahoma
  14. 2.4 6 km E of Manchester, Oklahoma
  15. 1.8 5 km ESE of Caldwell, Kansas

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.