Earthquake · reviewed by a seismologist
M 2.6ml
Earthquake near Stillwater, OK
No earthquake was likely felt in Stillwater in the 24 hours to 10:08 am CST (16:08 UTC). The last one was M 3.4, 105 km (65 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 Stillwater
This page: a magnitude 2.6 earthquake was recorded 39 km (24 mi) southeast of Stillwater, OK, at 5:58 pm CDT on 21 October 2016 (22:58 UTC), 8.0 km deep.
USGS: 5 km NW of Kendrick, Oklahoma
75 km (46 mi) ENE of Oklahoma City, OK · 41 km (25 mi) SE of Stillwater, OK
- When
- 5:58 pm CDT on 21 October 2016 ()
- Where
- 39 km (24 mi) southeast of Stillwater, OK · earthquakes near Stillwater
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 2.6 (ml)
- Depth
- 8.0 km below the surface
- Felt
- no reports yet
- Nearest
- Lincoln County, 15 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3583 days ago
Earthquake alerts for Stillwater, OK
Get a notification in this browser when USGS records an earthquake near Stillwater, 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 50 km (31 mi) from the epicentre. In Stillwater, 39 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: Chandler 15 km, intensity III · Stroud 17 km, intensity III · Cushing 18 km, intensity III · Perkins 25 km, intensity II · Yale 33 km, intensity II · Stillwater 39 km, intensity II · Luther 39 km, intensity II · Prague 40 km, intensity II. 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.
- Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
- Magna, Utah 2020 M 5.7 45,000× the energy of this one
- Around the size people start to feel M 3.0 4× the energy of this one
- 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 4.2 on 2016-04-07 — about 250 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.7 8 km NW of Prague, Oklahoma · 33 km S of this epicentre
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 35.8285, -96.8152. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lincoln County, OK | 15 km (9 mi) | SSW | earthquakes near Lincoln County |
| Payne County, OK | 31 km (20 mi) | NNW | earthquakes near Payne County |
| Creek County, OK | 40 km (25 mi) | ENE | earthquakes near Creek County |
| Pawnee County, OK | 55 km (34 mi) | N | earthquakes near Pawnee County |
| Logan County, OK | 58 km (36 mi) | W | earthquakes near Logan County |
| Okfuskee County, OK | 60 km (37 mi) | SE | earthquakes near Okfuskee County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 2.4 6 km WNW of Meridian, Oklahoma
- 2.7 12 km NNE of Ripley, Oklahoma
- 2.7 4 km NE of Meridian, Oklahoma
- 2.6 6 km NE of Agra, Oklahoma
- 2.6 6 km SW of Cushing, Oklahoma
- 2.5 10 km WSW of Shamrock, Oklahoma
- 2.6 10 km WSW of Shamrock, Oklahoma
- 3.2 5 km WNW of Quay, Oklahoma
- 2.3 3 km NNE of Cushing, Oklahoma
- 2.9 2 km NNW of Cushing, Oklahoma
- 2.6 3 km SE of Harrah, Oklahoma
- 2.6 5 km WSW of Glencoe, Oklahoma
- 2.6 4 km SE of Harrah, Oklahoma
- 3.2 0 km NNW of Yale, Oklahoma
- 3.2 4 km NNE of Cushing, 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.