QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Anthony, KS

No earthquake was likely felt in Anthony in the 24 hours to 9:34 am CST (15:34 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 1.9 earthquake was recorded 24 km (15 mi) east-southeast of Anthony, KS, at 9:50 pm CDT on 25 October 2016 (02:50 UTC), 5.5 km deep.

USGS: 7 km ESE of Bluff City, Kansas

82 km (51 mi) SSW of Wichita, KS

9:50 pm CDT, Oct 25, 2016 · · 5.5 km deep · released about 21 lb of TNT

10 km30 km60 km120 km N Harper County 28 kmGrant County 29 kmSumner County 35 kmAlfalfa County 58 kmKay County 64 kmKingman County 64 kmGarfield County 74 kmSedgwick County 77 kmBarber County 81 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
9:50 pm CDT on 25 October 2016 ()
Where
24 km (15 mi) east-southeast of Anthony, KS · earthquakes near Anthony
Magnitude
M 1.9 (ml)
Depth
5.5 km below the surface
Felt
no reports yet
Nearest
Harper County, 28 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3668 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 20 km (12 mi) from the epicentre. In Anthony, 24 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: Caldwell 17 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 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 37.0455, -97.8020. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Harper County, KS 28 km (18 mi) NW earthquakes near Harper County
Grant County, OK 29 km (18 mi) S earthquakes near Grant County
Sumner County, KS 35 km (22 mi) NE earthquakes near Sumner County
Alfalfa County, OK 58 km (36 mi) SW earthquakes near Alfalfa County
Kay County, OK 64 km (40 mi) ESE earthquakes near Kay County
Kingman County, KS 64 km (40 mi) NNW earthquakes near Kingman County

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

Aftershocks so far

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

  1. 1.8 2 km SE of Milan, Kansas
  2. 2.6 4 km S of Renfrow, Oklahoma
  3. 4.0 4 km NNW of Medford, Oklahoma
  4. 2.7 8 km W of Deer Creek, Oklahoma
  5. 1.7 3 km SSE of Danville, Kansas
  6. 2.4 3 km SSE of Danville, Kansas
  7. 3.0 9 km ESE of Wakita, Oklahoma
  8. 2.8 5 km NE of Medford, Oklahoma
  9. 2.5 6 km S of Manchester, Oklahoma
  10. 1.6 11 km ESE of Bluff City, Kansas
  11. 1.6 4 km SE of Caldwell, Kansas
  12. 2.7 7 km NNE of Wakita, Oklahoma
  13. 1.5 11 km W of Caldwell, Kansas
  14. 2.3 4 km ESE of Caldwell, Kansas
  15. 2.5 6 km E of Nescatunga, Oklahoma

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.