QuakeIndex

Earthquake · reviewed by a seismologist

M 1.3ml

Earthquake near Anadarko, OK

No earthquake was likely felt in Anadarko in the 24 hours to 7:26 pm CST (01:26 UTC). The last one was M 3.4, 63 km (39 mi) NNE, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Anadarko

This page: a magnitude 1.3 earthquake was recorded 16 km (10 mi) north of Anadarko, OK, at 11:42 pm CDT on 27 October 2026 (04:42 UTC), 14 km deep.

USGS: 3 km NNE of Gracemont, Oklahoma

72 km (45 mi) WSW of Oklahoma City, OK

11:42 pm CDT, Oct 27, 2026 · · 14 km deep · released about 2.3 lb of TNT

10 km30 km60 km120 km N Caddo County 13 kmGrady County 40 kmCanadian County 44 kmComanche County 65 kmWashita County 68 kmKiowa County 74 kmBlaine County 75 kmMcClain County 76 kmCuster County 83 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 27 October 2026 ()
Where
16 km (10 mi) north of Anadarko, OK · earthquakes near Anadarko
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.3 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Caddo County, 13 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 14 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. 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: Minco, Hinton.

How big was it?

This earthquake released about 2.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 6,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 4,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 410× the energy of this one
  4. This earthquake M 1.3 about 2.3 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 35.2178, -98.2493. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Caddo County, OK 13 km (8 mi) WSW earthquakes near Caddo County
Grady County, OK 40 km (25 mi) ESE earthquakes near Grady County
Canadian County, OK 44 km (27 mi) NE earthquakes near Canadian County
Comanche County, OK 65 km (40 mi) SSW earthquakes near Comanche County
Washita County, OK 68 km (42 mi) W earthquakes near Washita County
Kiowa County, OK 74 km (46 mi) WSW earthquakes near Kiowa County

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

Aftershocks so far

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

  1. 1.6 3 km WNW of Chickasha, Oklahoma
  2. 1.9 6 km E of Calumet, Oklahoma
  3. 1.6 7 km ENE of Calumet, Oklahoma
  4. 3.4 6 km E of Calumet, Oklahoma
  5. 1.0 4 km WNW of Chickasha, Oklahoma
  6. 2.0 6 km ENE of Calumet, Oklahoma
  7. 2.8 6 km ENE of Calumet, Oklahoma
  8. 0.7 3 km NW of Chickasha, Oklahoma
  9. 0.8 3 km WNW of Chickasha, Oklahoma
  10. 1.8 5 km E of Hinton, Oklahoma
  11. 0.8 4 km NW of Chickasha, Oklahoma
  12. 1.1 4 km WNW of Chickasha, Oklahoma
  13. 1.0 4 km W of Chickasha, Oklahoma
  14. 1.1 3 km WNW of Chickasha, Oklahoma
  15. 0.3 4 km N of Chickasha, 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.