Earthquake · reviewed by a seismologist
M 2.6ml
Oklahoma
Yes. A magnitude 2.6 earthquake was recorded in Oklahoma, 7 km (4 mi) SSE of Stillwater, OK, at 3:30 am CST on 15 February 2016 (09:30 UTC), 5.1 km deep. 4 people have reported feeling it to USGS.
7 km (4 mi) SSE of Stillwater, OK · 79 km (49 mi) NNE of Oklahoma City, OK
- When
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 2.6 (ml)
- Depth
- 5.1 km below the surface
- Felt
- 4 reports · strongest reported intensity IV
- Nearest
- Payne County, 7 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1562 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 51 km (32 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.
Likely felt in: Stillwater 5 km, intensity III · Perkins 11 km, intensity III · Langston 23 km, intensity III · Cushing 28 km, intensity II · Perry 32 km, intensity II · Yale 32 km, intensity II · Pawnee 37 km, intensity II · Guthrie 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
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 36.0734, -97.0548. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Payne County, OK | 7 km (4 mi) | E | earthquakes near Payne County |
| Noble County, OK | 38 km (24 mi) | NNW | earthquakes near Noble County |
| Logan County, OK | 40 km (25 mi) | WSW | earthquakes near Logan County |
| Pawnee County, OK | 42 km (26 mi) | NE | earthquakes near Pawnee County |
| Lincoln County, OK | 44 km (27 mi) | SSE | earthquakes near Lincoln County |
| Creek County, OK | 63 km (39 mi) | ESE | earthquakes near Creek County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
34 earthquakes have been recorded within 50 km since this one.
- 2.8 5 km WNW of Lucien, Oklahoma
- 2.6 8 km ESE of Guthrie, Oklahoma
- 2.7 5 km ESE of Covington, Oklahoma
- 2.4 6 km W of Lucien, Oklahoma
- 2.6 5 km W of Lucien, Oklahoma
- 3.5 6 km WNW of Lucien, Oklahoma
- 3.8 5 km WNW of Lucien, Oklahoma
- 2.6 6 km NW of Meridian, Oklahoma
- 3.6 6 km NW of Meridian, Oklahoma
- 2.7 11 km ENE of Orlando, Oklahoma
- 2.7 10 km SSE of Cushing, Oklahoma
- 2.6 4 km SW of Fallis, Oklahoma
- 3.0 4 km NNE of Morrison, Oklahoma
- 3.1 3 km NNE of Guthrie, Oklahoma
- 2.2 7 km WNW of Perkins, 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.