QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2mb_lg

9 km N of Norwich, Kansas

· 5.0 km deep · released about 1,900 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingman County 24 kmSedgwick County 39 kmHarper County 43 kmSumner County 47 kmReno County 49 kmHarvey County 68 kmPratt County 78 kmBarber County 80 kmGrant 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
Magnitude
M 3.2 (mb_lg)
Depth
5.0 km below the surface
Felt
45 reports · strongest reported intensity IV
Nearest
Kingman County, 24 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1261 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 45 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× more

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.

Where

Epicentre 37.5394, -97.8680. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingman County, KS 24 km (15 mi) E of here earthquakes near Kingman County
Sedgwick County, KS 39 km (24 mi) WSW of here earthquakes near Sedgwick County
Harper County, KS 43 km (27 mi) NNE of here earthquakes near Harper County
Sumner County, KS 47 km (29 mi) NW of here earthquakes near Sumner County
Reno County, KS 49 km (30 mi) SSE of here earthquakes near Reno County
Harvey County, KS 68 km (42 mi) SW of here earthquakes near Harvey County

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

Aftershocks so far

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

  1. 2.4 1 km SE of Danville, Kansas
  2. 2.6 5 km WSW of Danville, Kansas
  3. 2.5 6 km SSE of Spivey, Kansas
  4. 2.4 9 km S of Spivey, Kansas
  5. 2.6 5 km S of Milton, Kansas
  6. 2.4 3 km WSW of Harper, Kansas
  7. 3.3 7 km SW of Danville, Kansas
  8. 2.1 4 km SSE of Cheney, Kansas
  9. 2.5 4 km SSE of Pretty Prairie, Kansas
  10. 2.3 6 km SW of Goddard, 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.