Earthquake · reviewed by a seismologist
M 3.3ml
Oklahoma
Yes. A magnitude 3.3 earthquake was recorded in Oklahoma, 90 km (56 mi) N of Oklahoma City, OK, at 3:44 pm CST on 15 February 2016 (21:44 UTC), 7.6 km deep. 6 people have reported feeling it to USGS.
90 km (56 mi) N of Oklahoma City, OK · 29 km (18 mi) WNW of Stillwater, OK
- When
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 3.3 (ml)
- Depth
- 7.6 km below the surface
- Felt
- 6 reports · strongest reported intensity III
- Nearest
- Noble County, 17 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3851 days ago
Earthquake alerts for Perry, OK
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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 234 km (145 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: Perry 7 km, intensity IV · Stillwater 31 km, intensity III · Langston 36 km, intensity III · Crescent 41 km, intensity III · Perkins 43 km, intensity III · Guthrie 43 km, intensity III · Enid 49 km, intensity III · Pawnee 50 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 130,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
- Magna, Utah 2020 M 5.7 4,000× the energy of this one
- This earthquake M 3.3 about 1.3 tons of TNT
- Around the size people start to feel M 3.0 this one released 2.8× more
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 36.2619, -97.3526. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Noble County, OK | 17 km (11 mi) | NE | earthquakes near Noble County |
| Payne County, OK | 39 km (25 mi) | ESE | earthquakes near Payne County |
| Logan County, OK | 40 km (25 mi) | SSW | earthquakes near Logan County |
| Garfield County, OK | 41 km (26 mi) | WNW | earthquakes near Garfield County |
| Pawnee County, OK | 59 km (37 mi) | E | earthquakes near Pawnee County |
| Kingfisher County, OK | 63 km (39 mi) | WSW | earthquakes near Kingfisher 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 SW of Glencoe, Oklahoma
- 2.9 1 km SE of Breckinridge, Oklahoma
- 2.6 5 km W of Lucien, Oklahoma
- 2.5 5 km WNW of Lucien, Oklahoma
- 3.4 2 km NW of Fairmont, Oklahoma
- 3.2 3 km NE of Douglas, Oklahoma
- 3.1 3 km NE of Douglas, Oklahoma
- 3.1 5 km W of Lucien, Oklahoma
- 3.0 8 km SW of Hunter, Oklahoma
- 2.6 11 km E of Orlando, Oklahoma
- 2.6 5 km WSW of Perry, Oklahoma
- 1.7 4 km W of Lucien, Oklahoma
- 3.3 5 km W of Lucien, Oklahoma
- 2.9 17 km ESE of Marland, Oklahoma
- 3.7 8 km WSW of Langston, 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.