QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Mooreland, OK

No earthquake was likely felt in Mooreland in the 24 hours to 4:52 pm CST (22:52 UTC). The last one was M 3.4, 139 km (87 mi) SE, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Mooreland

This page: a magnitude 2.6 earthquake was recorded 6 km (4 mi) east-southeast of Mooreland, OK, at 3:14 pm CDT on 25 September 2017 (20:14 UTC), 5.9 km deep.

USGS: 5 km ESE of Mooreland, Oklahoma

3:14 pm CDT, Sep 25, 2017 · · 5.9 km deep · released about 240 lb of TNT

Every earthquake near Mooreland Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 11 kmWoods County 43 kmDewey County 50 kmMajor County 55 kmEllis County 58 kmHarper County 63 kmAlfalfa County 82 kmComanche County 86 kmCuster County 86 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
3:14 pm CDT on 25 September 2017 ()
Where
6 km (4 mi) east-southeast of Mooreland, OK · earthquakes near Mooreland
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.6 (ml)
Depth
5.9 km below the surface
Felt
no reports yet
Nearest
Woodward County, 11 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3246 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 51 km (32 mi) from the epicentre. In Mooreland, 6 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: Mooreland 6 km, intensity III · Woodward 22 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 5.1 on 2016-02-13 — about 5,600 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 36.4119, -99.1495. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Woodward County, OK 11 km (7 mi) W earthquakes near Woodward County
Woods County, OK 43 km (27 mi) NE earthquakes near Woods County
Dewey County, OK 50 km (31 mi) SSE earthquakes near Dewey County
Major County, OK 55 km (34 mi) E earthquakes near Major County
Ellis County, OK 58 km (36 mi) WSW earthquakes near Ellis County
Harper County, OK 63 km (39 mi) NW earthquakes near Harper County

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

Aftershocks so far

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

  1. 2.7 7 km WSW of Waynoka, Oklahoma
  2. 3.0 14 km SSE of Waynoka, Oklahoma
  3. 2.3 16 km SSW of Freedom, Oklahoma
  4. 2.5 13 km SSE of Waynoka, Oklahoma
  5. 2.8 14 km SSE of Waynoka, Oklahoma
  6. 2.6 14 km WNW of Longdale, Oklahoma
  7. 2.8 13 km NW of Longdale, Oklahoma
  8. 2.6 17 km SE of Waynoka, Oklahoma
  9. 2.6 14 km WNW of Longdale, Oklahoma
  10. 2.7 17 km SSE of Waynoka, Oklahoma
  11. 2.7 17 km W of Aline, Oklahoma
  12. 2.8 7 km N of Mooreland, Oklahoma
  13. 2.5 16 km SSE of Waynoka, Oklahoma
  14. 2.4 8 km NNE of Mooreland, Oklahoma
  15. 3.2 22 km NE of Fort Supply, 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.