QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7mb_lg

Earthquake near Enid, OK

No earthquake was likely felt in Enid in the 24 hours to 10:50 am CST (16:50 UTC). The last one was M 3.4, 89 km (55 mi) S, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Enid

This page: a magnitude 2.7 earthquake was recorded 40 km (25 mi) southeast of Enid, OK, at 6:47 pm CDT on 15 July 2017 (23:47 UTC), 3.5 km deep. 1 person has reported feeling it to USGS.

USGS: 4 km SE of Marshall, Oklahoma

74 km (46 mi) N of Oklahoma City, OK · 40 km (25 mi) SE of Enid, OK

6:47 pm CDT, Jul 15, 2017 · · 3.5 km deep · released about 340 lb of TNT

10 km30 km60 km120 km N Logan County 27 kmGarfield County 33 kmKingfisher County 37 kmNoble County 43 kmPayne County 55 kmOklahoma County 66 kmCanadian County 74 kmGrant County 76 kmLincoln County 79 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
6:47 pm CDT on 15 July 2017 ()
Where
40 km (25 mi) southeast of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.7 (mb_lg)
Depth
3.5 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Logan County, 27 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3323 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 56 km (35 mi) from the epicentre. In Enid, 40 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 19 km, intensity III · Hennessey 28 km, intensity II · Guthrie 31 km, intensity II · Perry 33 km, intensity II · Langston 36 km, intensity II · Enid 40 km, intensity II · Kingfisher 43 km, intensity II · Stillwater 48 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 2016-03-29 — about 180 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 36.1261, -97.5898. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Logan County, OK 27 km (17 mi) SSE earthquakes near Logan County
Garfield County, OK 33 km (21 mi) NNW earthquakes near Garfield County
Kingfisher County, OK 37 km (23 mi) WSW earthquakes near Kingfisher County
Noble County, OK 43 km (27 mi) NE earthquakes near Noble County
Payne County, OK 55 km (34 mi) E earthquakes near Payne County
Oklahoma County, OK 66 km (41 mi) SSE earthquakes near Oklahoma County

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

Aftershocks so far

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

  1. 2.7 5 km WNW of Lucien, Oklahoma
  2. 2.9 7 km SE of Marshall, Oklahoma
  3. 2.5 7 km SE of Lucien, Oklahoma
  4. 2.8 7 km NNE of Guthrie, Oklahoma
  5. 2.4 12 km ESE of Dover, Oklahoma
  6. 2.7 5 km WNW of Lucien, Oklahoma
  7. 2.7 3 km W of Lucien, Oklahoma
  8. 2.3 3 km NW of Fairmont, Oklahoma
  9. 2.6 10 km W of Mulhall, Oklahoma
  10. 2.6 4 km WNW of Lucien, Oklahoma
  11. 2.6 4 km WNW of Lucien, Oklahoma
  12. 2.3 4 km WNW of Lucien, Oklahoma
  13. 3.3 7 km NW of Orlando, Oklahoma
  14. 2.6 9 km SSE of Covington, Oklahoma
  15. 2.8 9 km SSE of Covington, 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.