QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Oklahoma

· 5.9 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 31 kmMajor County 38 kmAlfalfa County 39 kmGrant County 52 kmKingfisher County 55 kmBlaine County 66 kmWoods County 74 kmNoble County 80 kmLogan County 83 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 3.3 (ml)
Depth
5.9 km below the surface
Felt
7 reports · strongest reported intensity V
Nearest
Garfield County, 31 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3466 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 7 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 36.4174, -98.1347. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 31 km (19 mi) W of here earthquakes near Garfield County
Major County, OK 38 km (24 mi) ENE of here earthquakes near Major County
Alfalfa County, OK 39 km (24 mi) SSE of here earthquakes near Alfalfa County
Grant County, OK 52 km (32 mi) SW of here earthquakes near Grant County
Kingfisher County, OK 55 km (34 mi) NNW of here earthquakes near Kingfisher County
Blaine County, OK 66 km (41 mi) NNE of here earthquakes near Blaine County

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

Aftershocks so far

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

  1. 3.3 5 km SSE of Helena, Oklahoma
  2. 2.5 6 km SW of Goltry, Oklahoma
  3. 2.4 2 km W of Hennessey, Oklahoma
  4. 2.8 2 km W of Hennessey, Oklahoma
  5. 2.9 4 km WNW of Ringwood, Oklahoma
  6. 2.7 2 km NNW of Lambert, Oklahoma
  7. 2.7 5 km SSE of Pond Creek, Oklahoma
  8. 3.0 7 km S of Byron, Oklahoma
  9. 2.8 0 km N of Douglas, Oklahoma
  10. 2.6 2 km NNW of Lambert, Oklahoma
  11. 2.6 3 km S of Hennessey, Oklahoma
  12. 3.8 4 km ENE of Pond Creek, Oklahoma
  13. 3.6 7 km ENE of Hennessey, Oklahoma
  14. 2.9 2 km NNW of Lambert, Oklahoma
  15. 2.6 2 km NNW of Lambert, 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 4.1 on 2016-01-18 — it released about 16 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.