QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

12 km SSE of Waldron, Kansas

· 8.8 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 24 kmHarper County 34 kmGrant County 34 kmBarber County 60 kmGarfield County 66 kmWoods County 66 kmSumner County 70 kmMajor County 73 kmKingman County 73 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 1.6 (ml)
Depth
8.8 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 24 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 573 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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.

Where

Epicentre 36.8925, -98.1473. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 24 km (15 mi) NE of here earthquakes near Alfalfa County
Harper County, KS 34 km (21 mi) SSW of here earthquakes near Harper County
Grant County, OK 34 km (21 mi) WNW of here earthquakes near Grant County
Barber County, KS 60 km (37 mi) SE of here earthquakes near Barber County
Garfield County, OK 66 km (41 mi) NNW of here earthquakes near Garfield County
Woods County, OK 66 km (41 mi) ENE of here earthquakes near Woods County

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

Aftershocks so far

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

  1. 1.5 8 km NNE of Nash, Oklahoma
  2. 2.4 3 km ENE of Medford, Oklahoma
  3. 1.5 4 km NE of Medford, Oklahoma
  4. 1.8 9 km SSE of Byron, Oklahoma
  5. 2.3 5 km S of Dacoma, Oklahoma
  6. 2.4 1 km SE of Danville, Kansas
  7. 2.6 5 km WSW of Danville, Kansas
  8. 1.8 4 km NE of Cherokee, Oklahoma
  9. 1.7 5 km N of Cherokee, Oklahoma
  10. 2.0 5 km WSW of Kremlin, Oklahoma
  11. 2.3 8 km E of Nescatunga, Oklahoma
  12. 1.9 9 km ESE of Jefferson, Oklahoma

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2022-01-31 — it released about 27,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.