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 8:08 am CST (14:08 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 27 km (17 mi) southeast of Anthony, KS, at 5:06 pm CST on 4 November 2018 (23:06 UTC), 7.5 km deep.

USGS: 11 km NE of Wakita, Oklahoma

92 km (57 mi) SSW of Wichita, KS

5:06 pm CST, Nov 4, 2018 · · 7.5 km deep · released about 30 lb of TNT

10 km30 km60 km120 km N Grant County 20 kmHarper County 32 kmSumner County 44 kmAlfalfa County 50 kmKay County 64 kmGarfield County 65 kmKingman County 71 kmBarber County 80 kmNoble County 84 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
5:06 pm CST on 4 November 2018 ()
Where
27 km (17 mi) southeast of Anthony, KS · earthquakes near Anthony
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.0 (ml)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Grant County, 20 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2927 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 23 km (14 mi) from the epicentre. In Anthony, 27 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 22 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 30 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 5.8 500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 350,000× the energy of this one
  3. Around the size people start to feel M 3.0 32× the energy of this one
  4. This earthquake M 2.0 about 30 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 4.4 on 2018-06-09 — about 4,000 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 36.9610, -97.8415. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grant County, OK 20 km (12 mi) SSE earthquakes near Grant County
Harper County, KS 32 km (20 mi) NW earthquakes near Harper County
Sumner County, KS 44 km (27 mi) NE earthquakes near Sumner County
Alfalfa County, OK 50 km (31 mi) WSW earthquakes near Alfalfa County
Kay County, OK 64 km (40 mi) ESE earthquakes near Kay County
Garfield County, OK 65 km (40 mi) S earthquakes near Garfield County

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

Aftershocks so far

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

  1. 2.3 10 km SSE of Waldron, Kansas
  2. 2.3 7 km NE of Caldwell, Kansas
  3. 1.6 7 km N of Argonia, Kansas
  4. 3.3 3 km ENE of South Haven, Kansas
  5. 2.0 2 km NW of Jet, Oklahoma
  6. 2.5 Kansas
  7. 1.5 3 km E of Freeport, Kansas
  8. 2.0 6 km N of Medford, Oklahoma
  9. 2.4 2 km NE of Medford, Oklahoma
  10. 2.0 4 km NE of Cherokee, Oklahoma
  11. 1.6 6 km SSE of Anthony, Kansas
  12. 2.3 7 km NE of South Haven, Kansas
  13. 2.3 5 km ENE of South Haven, Kansas
  14. 2.5 3 km ENE of South Haven, Kansas
  15. 3.1 8 km W 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.