QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

6 km ENE of Avard, Oklahoma

· 5.9 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woods County 13 kmAlfalfa County 35 kmMajor County 47 kmBarber County 57 kmWoodward County 59 kmComanche County 70 kmHarper County 79 kmGrant County 84 kmHarper 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 1.6 (ml)
Depth
5.9 km below the surface
Felt
no reports yet
Nearest
Woods County, 13 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1245 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 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 36.7115, -98.7208. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woods County, OK 13 km (8 mi) E of here earthquakes near Woods County
Alfalfa County, OK 35 km (22 mi) W of here earthquakes near Alfalfa County
Major County, OK 47 km (29 mi) NNW of here earthquakes near Major County
Barber County, KS 57 km (35 mi) S of here earthquakes near Barber County
Woodward County, OK 59 km (36 mi) ENE of here earthquakes near Woodward County
Comanche County, KS 70 km (44 mi) SE of here earthquakes near Comanche 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. 2.0 14 km SSE of Waynoka, Oklahoma
  2. 1.5 14 km SSE of Waynoka, Oklahoma
  3. 1.9 14 km SSE of Waynoka, Oklahoma
  4. 3.1 14 km SSE of Waynoka, Oklahoma
  5. 1.6 14 km SSE of Waynoka, Oklahoma
  6. 1.5 15 km SSE of Waynoka, Oklahoma
  7. 1.8 15 km SSE of Waynoka, Oklahoma
  8. 2.1 15 km SSE of Waynoka, Oklahoma
  9. 1.6 15 km SSE of Waynoka, Oklahoma
  10. 2.5 14 km SSE of Waynoka, Oklahoma
  11. 1.9 14 km SSE of Waynoka, Oklahoma
  12. 3.6 14 km SSE of Waynoka, Oklahoma
  13. 3.1 14 km SSE of Waynoka, Oklahoma
  14. 3.5 14 km SSE of Waynoka, Oklahoma
  15. 1.6 17 km SSE of Waynoka, 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 5.1 on 2016-02-13 — it released about 170,000 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.