Earthquake · reviewed by a seismologist
M 3.4ml
Earthquake near Enid, OK
No earthquake was likely felt in Enid in the 24 hours to 2:19 pm CST (20:19 UTC). The last one was M 3.4, 89 km (55 mi) S, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Enid
This page: a magnitude 3.4 earthquake was recorded 47 km (29 mi) north-northeast of Enid, OK, at 2:57 am CST on 22 February 2017 (08:57 UTC), 8.8 km deep. 2 people have reported feeling it to USGS.
USGS: 9 km ESE of Medford, Oklahoma
45 km (28 mi) NNE of Enid, OK · 145 km (90 mi) N of Oklahoma City, OK
- When
- 2:57 am CST on 22 February 2017 ()
- Where
- 47 km (29 mi) north-northeast of Enid, OK · earthquakes near Enid
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 3.4 (ml)
- Depth
- 8.8 km below the surface
- Felt
- 2 reports · strongest reported intensity II
- Nearest
- Grant County, 13 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3466 days ago
Earthquake alerts for Enid, 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 271 km (168 mi) from the epicentre. In Enid, 47 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: Caldwell 30 km, intensity III · Blackwell 32 km, intensity III · Enid 47 km, intensity III · Ponca City 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 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 89,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,800× the energy of this one
- This earthquake M 3.4 about 1.9 tons of TNT
- Around the size people start to feel M 3.0 this one released 4× 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
The largest earthquake within 50 km since 2016 was M 4.0 on 2016-11-25 — about 7.9 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 36.7675, -97.6396. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Grant County, OK | 13 km (8 mi) | W | earthquakes near Grant County |
| Kay County, OK | 44 km (28 mi) | E | earthquakes near Kay County |
| Garfield County, OK | 45 km (28 mi) | SSW | earthquakes near Garfield County |
| Sumner County, KS | 54 km (33 mi) | NNE | earthquakes near Sumner County |
| Noble County, OK | 56 km (35 mi) | SE | earthquakes near Noble County |
| Harper County, KS | 60 km (37 mi) | NW | earthquakes near Harper 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.
- 2.1 11 km NNW of Caldwell, Kansas
- 2.7 12 km NNW of Caldwell, Kansas
- 1.7 9 km W of Bluff City, Kansas
- 2.0 9 km W of Bluff City, Kansas
- 2.6 9 km ESE of Wakita, Oklahoma
- 1.9 10 km WNW of Caldwell, Kansas
- 2.5 10 km SSE of Waldron, Kansas
- 2.2 8 km NNW of Wakita, Oklahoma
- 2.7 5 km SSE of Pond Creek, Oklahoma
- 2.5 12 km SSE of Waldron, Kansas
- 4.1 8 km W of Deer Creek, Oklahoma
- 3.8 4 km ENE of Pond Creek, Oklahoma
- 2.5 2 km ENE of South Haven, Kansas
- 2.1 8 km ESE of Caldwell, Kansas
- 1.6 5 km SSE of Freeport, Kansas
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.