QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Enid, OK

No earthquake was likely felt in Enid in the 24 hours to 3:53 am CST (09:53 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 2.5 earthquake was recorded 49 km (31 mi) north-northeast of Enid, OK, at 5:50 pm CST on 25 November 2018 (23:50 UTC), 5.8 km deep. 2 people have reported feeling it to USGS.

USGS: 2 km ENE of Medford, Oklahoma

48 km (30 mi) NNE of Enid, OK · 102 km (64 mi) SSW of Wichita, KS

5:50 pm CST, Nov 25, 2018 · · 5.8 km deep · released about 170 lb of TNT

10 km30 km60 km120 km N Grant County 8 kmGarfield County 49 kmKay County 50 kmSumner County 50 kmHarper County 52 kmAlfalfa County 56 kmNoble County 64 kmCowley County 90 kmKingman County 91 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
5:50 pm CST on 25 November 2018 ()
Where
49 km (31 mi) north-northeast of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.5 (ml)
Depth
5.8 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Grant County, 8 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1556 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 46 km (29 mi) from the epicentre. In Enid, 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: Caldwell 26 km, intensity II · Blackwell 38 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 4.4 on 2018-06-09 — about 710 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 36.8162, -97.7066. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grant County, OK 8 km (5 mi) WSW earthquakes near Grant County
Garfield County, OK 49 km (31 mi) S earthquakes near Garfield County
Kay County, OK 50 km (31 mi) E earthquakes near Kay County
Sumner County, KS 50 km (31 mi) NNE earthquakes near Sumner County
Harper County, KS 52 km (32 mi) NW earthquakes near Harper County
Alfalfa County, OK 56 km (35 mi) W earthquakes near Alfalfa 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. 2.2 7 km N of Nardin, Oklahoma
  2. 1.9 7 km N of Nardin, Oklahoma
  3. 2.0 7 km N of Nardin, Oklahoma
  4. 1.6 4 km ENE of Freeport, Kansas
  5. 2.2 7 km N of Nardin, Oklahoma
  6. 3.2 0 km SE of Wakita, Oklahoma
  7. 2.2 0 km ENE of Wakita, Oklahoma
  8. 3.8 0 km SW of Wakita, Oklahoma
  9. 2.4 4 km NNE of Medford, Oklahoma
  10. 1.6 6 km SE of Freeport, Kansas
  11. 2.2 6 km NE of South Haven, Kansas
  12. 1.5 7 km ENE of Bluff City, Kansas
  13. 1.8 6 km WNW of Renfrow, Oklahoma
  14. 1.5 5 km W of South Haven, Kansas
  15. 1.9 2 km SSE 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.