QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Edmond, OK

No earthquake was likely felt in Edmond in the 24 hours to 10:09 am CST (16:09 UTC). The last one was M 3.4, 51 km (32 mi) W, at 5:53 am CST on 7 November 2026, estimated intensity III (weak) in town; 23 felt reports to USGS. Every earthquake near Edmond

This page: a magnitude 2.6 earthquake was recorded 49 km (30 mi) north of Edmond, OK, at 11:42 pm CDT on 31 March 2018 (04:42 UTC), 6.4 km deep.

USGS: 10 km SE of Marshall, Oklahoma

69 km (43 mi) N of Oklahoma City, OK · 43 km (26 mi) W of Stillwater, OK

11:42 pm CDT, Mar 31, 2018 · · 6.4 km deep · released about 240 lb of TNT

Every earthquake near Edmond Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Logan County 21 kmKingfisher County 38 kmGarfield County 39 kmNoble County 43 kmPayne County 51 kmOklahoma County 60 kmCanadian County 72 kmLincoln County 73 kmPawnee 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
11:42 pm CDT on 31 March 2018 ()
Where
49 km (30 mi) north of Edmond, OK · earthquakes near Edmond
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.6 (ml)
Depth
6.4 km below the surface
Felt
no reports yet
Nearest
Logan County, 21 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3064 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 51 km (32 mi) from the epicentre. In Edmond, 49 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Crescent 16 km, intensity III · Guthrie 26 km, intensity II · Langston 30 km, intensity II · Hennessey 32 km, intensity II · Perry 32 km, intensity II · Kingfisher 43 km, intensity II · Stillwater 44 km, intensity II · Enid 46 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.2 on 2016-01-01 — about 250 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 36.0870, -97.5452. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Logan County, OK 21 km (13 mi) SSE earthquakes near Logan County
Kingfisher County, OK 38 km (24 mi) WSW earthquakes near Kingfisher County
Garfield County, OK 39 km (24 mi) NW earthquakes near Garfield County
Noble County, OK 43 km (27 mi) NE earthquakes near Noble County
Payne County, OK 51 km (32 mi) E earthquakes near Payne County
Oklahoma County, OK 60 km (38 mi) SSE earthquakes near Oklahoma County

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

Aftershocks so far

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

  1. 2.3 10 km SSE of Marshall, Oklahoma
  2. 3.0 10 km SSE of Marshall, Oklahoma
  3. 2.6 10 km SSE of Marshall, Oklahoma
  4. 4.0 10 km SSE of Marshall, Oklahoma
  5. 2.5 10 km SSE of Marshall, Oklahoma
  6. 2.5 10 km SSE of Marshall, Oklahoma
  7. 3.0 10 km SSE of Marshall, Oklahoma
  8. 2.8 10 km SSE of Marshall, Oklahoma
  9. 3.7 10 km SSE of Marshall, Oklahoma
  10. 2.8 4 km W of Lucien, Oklahoma
  11. 2.6 4 km NE of Coyle, Oklahoma
  12. 2.9 6 km ENE of Edmond, Oklahoma
  13. 2.6 5 km E of Hennessey, Oklahoma
  14. 3.0 5 km E of Hennessey, Oklahoma
  15. 1.6 5 km NNW of Breckinridge, 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.

On USGS

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