QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Oklahoma

Yes. A magnitude 1.6 earthquake was recorded in Oklahoma, 26 km (16 mi) W of Enid, OK, at 8:15 pm CDT on 22 April 2023 (01:15 UTC), 6.0 km deep.

26 km (16 mi) W of Enid, OK · 115 km (72 mi) NNW of Oklahoma City, OK

· 6.0 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 33 kmMajor County 35 kmAlfalfa County 44 kmKingfisher County 50 kmGrant County 58 kmBlaine County 59 kmWoods County 75 kmLogan County 81 kmNoble County 82 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
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.6 (ml)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Garfield County, 33 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1297 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 5 km (3 mi) from the epicentre. 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.

Earthquakes near other towns within 30 km: Helena, Waukomis, Enid.

How big was it?

This earthquake released about 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 15,000 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 36.3620, -98.1570. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Garfield County, OK 33 km (21 mi) E earthquakes near Garfield County
Major County, OK 35 km (22 mi) W earthquakes near Major County
Alfalfa County, OK 44 km (27 mi) NNW earthquakes near Alfalfa County
Kingfisher County, OK 50 km (31 mi) SSE earthquakes near Kingfisher County
Grant County, OK 58 km (36 mi) NE earthquakes near Grant County
Blaine County, OK 59 km (37 mi) SSW earthquakes near Blaine County

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

Aftershocks so far

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

  1. 2.1 7 km E of Nescatunga, Oklahoma
  2. 1.6 4 km N of Dover, Oklahoma
  3. 2.1 2 km SSE of Meno, Oklahoma
  4. 1.6 5 km N of Dover, Oklahoma
  5. 1.6 5 km N of Dover, Oklahoma
  6. 1.9 5 km N of Dover, Oklahoma
  7. 1.7 6 km N of Dover, Oklahoma
  8. 1.6 5 km SE of Longdale, Oklahoma
  9. 1.5 5 km SE of Longdale, Oklahoma
  10. 1.7 5 km SE of Longdale, Oklahoma
  11. 1.6 5 km SE of Longdale, Oklahoma
  12. 1.6 7 km E of Nescatunga, Oklahoma
  13. 1.7 5 km N of Dover, Oklahoma
  14. 1.5 3 km NW of Dover, Oklahoma
  15. 1.9 4 km N of Dover, 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.