QuakeIndex

Earthquake · reviewed by a seismologist

M 4.1ml

Oklahoma

· 8.3 km deep · released about 21 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Major County 13 kmBlaine County 44 kmAlfalfa County 51 kmKingfisher County 56 kmGarfield County 57 kmDewey County 64 kmWoods County 65 kmWoodward County 79 kmGrant County 80 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 4.1 (ml)
Depth
8.3 km below the surface
Felt
27 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Major County, 13 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2382 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 27 people have reported feeling it to USGS.

How big was it?

This earthquake released about 21 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 7,900× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 350× the energy of this one
  3. Magna, Utah 2020 M 5.7 250× the energy of this one
  4. This earthquake M 4.1 about 21 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 45× 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 36.2761, -98.4096. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Major County, OK 13 km (8 mi) ESE of here earthquakes near Major County
Blaine County, OK 44 km (28 mi) N of here earthquakes near Blaine County
Alfalfa County, OK 51 km (32 mi) S of here earthquakes near Alfalfa County
Kingfisher County, OK 56 km (35 mi) NW of here earthquakes near Kingfisher County
Garfield County, OK 57 km (35 mi) WSW of here earthquakes near Garfield County
Dewey County, OK 64 km (40 mi) ENE of here earthquakes near Dewey County

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

Aftershocks so far

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

  1. 3.4 17 km ESE of Waynoka, Oklahoma
  2. 2.7 17 km SE of Waynoka, Oklahoma
  3. 2.6 16 km SE of Waynoka, Oklahoma
  4. 2.8 16 km SE of Waynoka, Oklahoma
  5. 4.0 16 km SE of Waynoka, Oklahoma
  6. 5.1 18 km SE of Waynoka, Oklahoma
  7. 2.7 16 km SE of Waynoka, Oklahoma
  8. 2.6 16 km ESE of Waynoka, Oklahoma
  9. 2.5 6 km SE of Drummond, Oklahoma
  10. 2.8 3 km N of Lambert, Oklahoma
  11. 3.1 16 km SE of Waynoka, Oklahoma
  12. 3.2 16 km SE of Waynoka, Oklahoma
  13. 2.9 22 km SE of Waynoka, Oklahoma
  14. 2.6 8 km SSE of Meno, Oklahoma
  15. 2.7 8 km WNW of Jet, 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 4.7 on 2016-01-07 — it released about 7.9 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.