QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

Kansas

Yes. A magnitude 2.6 earthquake was recorded in Kansas, at 11:56 pm CDT on 18 August 2023 (04:56 UTC), 5.0 km deep.

· 5.0 km deep · released about 240 lb of TNT

10 km30 km60 km120 km N Edwards County 18 kmKiowa County 24 kmPratt County 41 kmPawnee County 47 kmStafford County 51 kmFord County 62 kmComanche County 64 kmHodgeman County 73 kmBarber County 74 km
Distance rings around the epicentre, with the nearest towns at their true direction. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.6 (mb_lg)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Edwards County, 18 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1111 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 51 km (32 mi) from the epicentre. 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.

Earthquakes near other towns within 30 km: Kinsley.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 37.7577, -99.1805. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Edwards County, KS 18 km (11 mi) NW earthquakes near Edwards County
Kiowa County, KS 24 km (15 mi) SSW earthquakes near Kiowa County
Pratt County, KS 41 km (25 mi) ESE earthquakes near Pratt County
Pawnee County, KS 47 km (29 mi) N earthquakes near Pawnee County
Stafford County, KS 51 km (32 mi) NE earthquakes near Stafford County
Ford County, KS 62 km (39 mi) W earthquakes near Ford County

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

Aftershocks so far

No further earthquakes have been recorded within 50 km since this one.

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.