QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

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 27 km (17 mi) north-northeast of Enid, OK, at 11:23 pm CDT on 2 April 2017 (04:23 UTC), 6.3 km deep. 4 people have reported feeling it to USGS.

USGS: 5 km SSE of Pond Creek, Oklahoma

25 km (16 mi) NNE of Enid, OK · 131 km (81 mi) N of Oklahoma City, OK

11:23 pm CDT, Apr 2, 2017 · · 6.3 km deep · released about 340 lb of TNT

Every earthquake near Enid Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 18 kmGarfield County 27 kmAlfalfa County 50 kmNoble County 55 kmKay County 60 kmHarper County 68 kmSumner County 73 kmKingfisher County 76 kmMajor County 76 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
11:23 pm CDT on 2 April 2017 ()
Where
27 km (17 mi) north-northeast of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.7 (ml)
Depth
6.3 km below the surface
Felt
4 reports · strongest reported intensity II
Nearest
Grant County, 18 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3428 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, 27 km away, the estimate is intensity III (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: Enid 27 km, intensity III · Helena 45 km, intensity II · Caldwell 48 km, intensity II · Blackwell 49 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 2016-07-17 — 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 36.6227, -97.7782. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grant County, OK 18 km (11 mi) N earthquakes near Grant County
Garfield County, OK 27 km (17 mi) S earthquakes near Garfield County
Alfalfa County, OK 50 km (31 mi) WNW earthquakes near Alfalfa County
Noble County, OK 55 km (34 mi) ESE earthquakes near Noble County
Kay County, OK 60 km (38 mi) ENE earthquakes near Kay County
Harper County, KS 68 km (42 mi) NNW earthquakes near Harper County

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

Aftershocks so far

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

  1. 2.4 8 km NNE of Nardin, Oklahoma
  2. 3.4 6 km NE of Hunter, Oklahoma
  3. 3.0 10 km SSE of Waldron, Kansas
  4. 3.3 10 km SSE of Waldron, Kansas
  5. 3.0 10 km SSE of Waldron, Kansas
  6. 3.2 5 km NE of Hunter, Oklahoma
  7. 2.4 8 km S of Goltry, Oklahoma
  8. 3.0 8 km NE of Marshall, Oklahoma
  9. 2.6 4 km E of Covington, Oklahoma
  10. 2.6 4 km E of Covington, Oklahoma
  11. 2.7 5 km WNW of Lucien, Oklahoma
  12. 2.6 4 km SSE of Covington, Oklahoma
  13. 2.8 10 km W of Lamont, Oklahoma
  14. 2.6 10 km WNW of Red Rock, Oklahoma
  15. 2.2 2 km SE of Bluff City, Kansas

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.