QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Anthony, KS

No earthquake was likely felt in Anthony in the 24 hours to 6:41 pm CST (00:41 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 2.2 earthquake was recorded 23 km (14 mi) south-southeast of Anthony, KS, at 2:38 pm CDT on 3 April 2017 (19:38 UTC), 3.4 km deep.

USGS: 8 km NNW of Wakita, Oklahoma

98 km (61 mi) SSW of Wichita, KS

2:38 pm CDT, Apr 3, 2017 · · 3.4 km deep · released about 52 lb of TNT

10 km30 km60 km120 km N Grant County 24 kmHarper County 28 kmAlfalfa County 41 kmSumner County 52 kmGarfield County 66 kmKingman County 69 kmBarber County 71 kmKay County 74 kmWoods County 85 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
2:38 pm CDT on 3 April 2017 ()
Where
23 km (14 mi) south-southeast of Anthony, KS · earthquakes near Anthony
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.2 (ml)
Depth
3.4 km below the surface
Felt
no reports yet
Nearest
Grant County, 24 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3507 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 31 km (19 mi) from the epicentre. In Anthony, 23 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 23 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 52 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 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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

The largest earthquake within 50 km since 2016 was M 4.1 on 2017-03-29 — about 810 times the energy of this one.

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 36.9540, -97.9548. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grant County, OK 24 km (15 mi) SE earthquakes near Grant County
Harper County, KS 28 km (17 mi) NNW earthquakes near Harper County
Alfalfa County, OK 41 km (26 mi) SW earthquakes near Alfalfa County
Sumner County, KS 52 km (32 mi) NE earthquakes near Sumner County
Garfield County, OK 66 km (41 mi) SSE earthquakes near Garfield County
Kingman County, KS 69 km (43 mi) NNW earthquakes near Kingman County

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

Aftershocks so far

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

  1. 2.0 6 km SSE of Bluff City, Kansas
  2. 2.2 9 km W of Bluff City, Kansas
  3. 1.7 6 km SSE of Bluff City, Kansas
  4. 2.2 8 km SE of Harper, Kansas
  5. 3.0 10 km W of Lamont, Oklahoma
  6. 3.0 4 km WNW of Medford, Oklahoma
  7. 2.0 10 km WNW of Caldwell, Kansas
  8. 1.8 2 km E of Anthony, Kansas
  9. 3.3 8 km ENE of Cherokee, Oklahoma
  10. 1.9 10 km N of Caldwell, Kansas
  11. 2.6 5 km WNW of Medford, Oklahoma
  12. 1.7 6 km NW of Mayfield, Kansas
  13. 1.9 5 km NW of Mayfield, Kansas
  14. 2.0 6 km NW of Mayfield, Kansas
  15. 1.5 6 km NW of Mayfield, 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.