Earthquake · reviewed by a seismologist
M 2.5ml
Earthquake near Langston, OK
No earthquake was likely felt in Langston in the 24 hours to 9:24 am CST (15:24 UTC). The last one was M 3.4, 80 km (50 mi) WSW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Langston
This page: a magnitude 2.5 earthquake was recorded 6 km (3 mi) south-southwest of Langston, OK, at 1:56 am CDT on 21 July 2018 (06:56 UTC), 5.8 km deep.
USGS: 5 km SSW of Langston, Oklahoma
53 km (33 mi) NNE of Oklahoma City, OK · 28 km (17 mi) NNE of Edmond, OK
- When
- 1:56 am CDT on 21 July 2018 ()
- Where
- 6 km (3 mi) south-southwest of Langston, OK · earthquakes near Langston
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 2.5 (ml)
- Depth
- 5.8 km below the surface
- Felt
- no reports yet
- Nearest
- Logan County, 16 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2960 days ago
Earthquake alerts for Langston, OK
Get a notification in this browser when USGS records an earthquake near Langston, OK. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 Langston, 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: Langston 6 km, intensity III · Guthrie 14 km, intensity III · Perkins 23 km, intensity II · Luther 27 km, intensity II · Crescent 30 km, intensity II · Stillwater 31 km, intensity II · Edmond 33 km, intensity II · Chandler 42 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.
- Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
- Magna, Utah 2020 M 5.7 63,000× the energy of this one
- Around the size people start to feel M 3.0 5.6× the energy of this one
- 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 5.0 on 2016-11-07 — 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 35.8973, -97.2741. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Logan County, OK | 16 km (10 mi) | W | earthquakes near Logan County |
| Payne County, OK | 34 km (21 mi) | NE | earthquakes near Payne County |
| Oklahoma County, OK | 40 km (25 mi) | SSW | earthquakes near Oklahoma County |
| Lincoln County, OK | 41 km (26 mi) | ESE | earthquakes near Lincoln County |
| Noble County, OK | 54 km (34 mi) | N | earthquakes near Noble County |
| Kingfisher County, OK | 60 km (37 mi) | W | earthquakes near Kingfisher County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 3.0 5 km WNW of Lucien, Oklahoma
- 2.5 4 km W of Lucien, Oklahoma
- 2.4 3 km WSW of Lucien, Oklahoma
- 2.6 7 km S of Guthrie, Oklahoma
- 2.5 5 km W of Lucien, Oklahoma
- 2.4 3 km SW of Lucien, Oklahoma
- 2.7 6 km W of Arcadia, Oklahoma
- 2.7 6 km W of Arcadia, Oklahoma
- 2.9 4 km W of Arcadia, Oklahoma
- 3.0 10 km E of Kingfisher, Oklahoma
- 2.6 7 km N of Spencer, Oklahoma
- 2.7 2 km SSE of Cushing, Oklahoma
- 3.3 0 km SSW of Morrison, Oklahoma
- 2.6 4 km ESE of Carney, Oklahoma
- 2.5 5 km WNW of Lucien, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.