QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Anthony, KS

No earthquake was likely felt in Anthony in the 24 hours to 5:29 pm CST (23:29 UTC). The last one was M 3.4, 172 km (107 mi) S, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Anthony

This page: a magnitude 1.6 earthquake was recorded 3 km (2 mi) east of Anthony, KS, at 3:42 pm CDT on 30 July 2016 (20:42 UTC), 4.4 km deep.

USGS: 2 km E of Anthony, Kansas

83 km (52 mi) SW of Wichita, KS

3:42 pm CDT, Jul 30, 2016 · · 4.4 km deep · released about 8.7 lb of TNT

10 km30 km60 km120 km N Harper County 7 kmGrant County 44 kmSumner County 46 kmKingman County 47 kmAlfalfa County 55 kmBarber County 61 kmSedgwick County 76 kmKay County 85 kmPratt County 86 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
3:42 pm CDT on 30 July 2016 ()
Where
3 km (2 mi) east of Anthony, KS · earthquakes near Anthony
Magnitude
M 1.6 (ml)
Depth
4.4 km below the surface
Felt
no reports yet
Nearest
Harper County, 7 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3684 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 9 km (6 mi) from the epicentre. In Anthony, 3 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.

Likely felt in: Anthony 3 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 37.1502, -98.0000. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Harper County, KS 7 km (5 mi) NW earthquakes near Harper County
Grant County, OK 44 km (28 mi) SSE earthquakes near Grant County
Sumner County, KS 46 km (29 mi) ENE earthquakes near Sumner County
Kingman County, KS 47 km (29 mi) NNW earthquakes near Kingman County
Alfalfa County, OK 55 km (34 mi) SSW earthquakes near Alfalfa County
Barber County, KS 61 km (38 mi) W earthquakes near Barber County

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

Aftershocks so far

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

  1. 2.0 5 km SW of Harper, Kansas
  2. 2.6 6 km NNE of Wakita, Oklahoma
  3. 3.0 6 km N of Wakita, Oklahoma
  4. 1.8 6 km ENE of Caldwell, Kansas
  5. 1.9 6 km ENE of Caldwell, Kansas
  6. 2.9 8 km W of Wakita, Oklahoma
  7. 1.6 7 km E of Bluff City, Kansas
  8. 1.6 7 km E of Bluff City, Kansas
  9. 2.7 8 km ENE of Caldwell, Kansas
  10. 2.2 2 km S of Anthony, Kansas
  11. 1.7 6 km E of Manchester, Oklahoma
  12. 1.8 7 km ENE of Caldwell, Kansas
  13. 2.2 7 km SW of Danville, Kansas
  14. 2.2 5 km SSE of Bluff City, Kansas
  15. 2.7 5 km SSE of Bluff City, 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.