QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Anthony, KS

No earthquake was likely felt in Anthony in the 24 hours to 2:33 pm CST (20:33 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 2.0 earthquake was recorded 12 km (8 mi) east-southeast of Anthony, KS, at 2:41 am CDT on 11 July 2017 (07:41 UTC), 5.1 km deep.

USGS: 4 km NNW of Bluff City, Kansas

81 km (50 mi) SW of Wichita, KS

2:41 am CDT, Jul 11, 2017 · · 5.1 km deep · released about 36 lb of TNT

10 km30 km60 km120 km N Harper County 17 kmGrant County 38 kmSumner County 39 kmKingman County 53 kmAlfalfa County 57 kmBarber County 71 kmSedgwick County 74 kmKay County 75 kmGarfield County 83 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
2:41 am CDT on 11 July 2017 ()
Where
12 km (8 mi) east-southeast of Anthony, KS · earthquakes near Anthony
Magnitude
M 2.0 (ml)
Depth
5.1 km below the surface
Felt
no reports yet
Nearest
Harper County, 17 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3404 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 26 km (16 mi) from the epicentre. In Anthony, 12 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 12 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 36 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 420,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 300,000× the energy of this one
  3. Around the size people start to feel M 3.0 27× the energy of this one
  4. This earthquake M 2.0 about 36 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 1,200 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 37.1147, -97.9007. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Harper County, KS 17 km (10 mi) WNW earthquakes near Harper County
Grant County, OK 38 km (23 mi) SSE earthquakes near Grant County
Sumner County, KS 39 km (24 mi) ENE earthquakes near Sumner County
Kingman County, KS 53 km (33 mi) NNW earthquakes near Kingman County
Alfalfa County, OK 57 km (35 mi) SW earthquakes near Alfalfa County
Barber County, KS 71 km (44 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. 3.0 5 km ENE of Milan, Kansas
  2. 2.1 11 km N of Caldwell, Kansas
  3. 1.7 2 km SE of Milan, Kansas
  4. 2.2 2 km SE of Milan, Kansas
  5. 3.4 4 km ENE of Milan, Kansas
  6. 2.5 5 km ENE of Milan, Kansas
  7. 1.8 11 km N of Caldwell, Kansas
  8. 2.9 10 km N of Caldwell, Kansas
  9. 2.0 10 km N of Caldwell, Kansas
  10. 3.4 10 km N of Caldwell, Kansas
  11. 3.2 10 km N of Caldwell, Kansas
  12. 1.7 12 km N of Caldwell, Kansas
  13. 2.3 10 km N of Caldwell, Kansas
  14. 2.3 10 km N of Caldwell, Kansas
  15. 1.7 12 km N 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.