QuakeIndex

Earthquake · reviewed by a seismologist

M 4.2mwr

17 km SE of Waynoka, Oklahoma

· 5.4 km deep · released about 30 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Major County 25 kmWoods County 30 kmAlfalfa County 46 kmWoodward County 48 kmDewey County 61 kmBlaine County 72 kmBarber County 83 kmGarfield County 86 kmHarper County 90 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 4.2 (mwr)
Depth
5.4 km below the surface
Felt
142 reports · strongest reported intensity IV
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Major County, 25 km SE
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. 142 people have reported feeling it to USGS.

How big was it?

This earthquake released about 30 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 5,600× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 250× the energy of this one
  3. Magna, Utah 2020 M 5.7 180× the energy of this one
  4. This earthquake M 4.2 about 30 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 63× 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 36.4782, -98.7365. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Major County, OK 25 km (16 mi) NW of here earthquakes near Major County
Woods County, OK 30 km (19 mi) SSE of here earthquakes near Woods County
Alfalfa County, OK 46 km (29 mi) SW of here earthquakes near Alfalfa County
Woodward County, OK 48 km (30 mi) E of here earthquakes near Woodward County
Dewey County, OK 61 km (38 mi) NNE of here earthquakes near Dewey County
Blaine County, OK 72 km (45 mi) NNW of here earthquakes near Blaine 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. 3.0 13 km WNW of Canton, Oklahoma
  2. 2.8 7 km SW of Helena, Oklahoma
  3. 2.7 13 km NW of Canton, Oklahoma
  4. 2.5 11 km NW of Canton, Oklahoma
  5. 2.1 13 km NW of Canton, Oklahoma
  6. 2.8 10 km NW of Canton, Oklahoma
  7. 2.6 Oklahoma
  8. 2.8 Oklahoma
  9. 2.8 9 km SW of Waynoka, Oklahoma
  10. 3.5 9 km SW of Waynoka, Oklahoma
  11. 2.3 10 km NNE of Quinlan, Oklahoma
  12. 2.2 Oklahoma
  13. 2.4 1 km NNW of Lambert, Oklahoma
  14. 2.9 17 km SSE of Waynoka, Oklahoma
  15. 2.1 7 km SW 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 22 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.