Earthquake · reviewed by a seismologist
M 2.8ml
Earthquake near Prague, OK
No earthquake was likely felt in Prague in the 24 hours to 10:11 am CST (16:11 UTC). The last one was M 3.4, 124 km (77 mi) W, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Prague
This page: a magnitude 2.8 earthquake was recorded 9 km (6 mi) west-northwest of Prague, OK, at 8:22 am CDT on 30 May 2018 (13:22 UTC), 6.0 km deep. 1 person has reported feeling it to USGS.
USGS: 9 km WNW of Prague, Oklahoma
67 km (42 mi) E of Oklahoma City, OK · 55 km (34 mi) E of Midwest City, OK
- When
- 8:22 am CDT on 30 May 2018 ()
- Where
- 9 km (6 mi) west-northwest of Prague, OK · earthquakes near Prague
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 2.8 (ml)
- Depth
- 6.0 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Lincoln County, 22 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2997 days ago
Earthquake alerts for Prague, 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 62 km (39 mi) from the epicentre. In Prague, 9 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: Prague 9 km, intensity III · Chandler 22 km, intensity III · Shawnee 26 km, intensity III · Stroud 27 km, intensity III · Luther 41 km, intensity II · Choctaw 45 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
- Magna, Utah 2020 M 5.7 22,000× the energy of this one
- Around the size people start to feel M 3.0 2× the energy of this one
- This earthquake M 2.8 about 480 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 130 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 · 1 km NE 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 35.5259, -96.7755. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lincoln County, OK | 22 km (14 mi) | NNW | earthquakes near Lincoln County |
| Pottawatomie County, OK | 39 km (24 mi) | SSW | earthquakes near Pottawatomie County |
| Okfuskee County, OK | 41 km (26 mi) | E | earthquakes near Okfuskee County |
| Seminole County, OK | 44 km (27 mi) | SSE | earthquakes near Seminole County |
| Creek County, OK | 55 km (34 mi) | NE | earthquakes near Creek County |
| Oklahoma County, OK | 57 km (36 mi) | W | earthquakes near Oklahoma County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
28 earthquakes have been recorded within 50 km since this one.
- 1.8 5 km N of Stroud, Oklahoma
- 2.3 9 km SSE of Sparks, Oklahoma
- 2.1 7 km E of Carney, Oklahoma
- 1.6 6 km E of Carney, Oklahoma
- 2.2 8 km NW of Prague, Oklahoma
- 1.9 2 km ENE of Fallis, Oklahoma
- 1.7 5 km NNW of Stroud, Oklahoma
- 2.2 9 km SSW of Shamrock, Oklahoma
- 2.6 9 km NNE of Harrah, Oklahoma
- 3.4 8 km NNE of Harrah, Oklahoma
- 2.7 11 km NE of Kendrick, Oklahoma
- 2.0 5 km SE of Luther, Oklahoma
- 1.9 5 km SE of Cushing, Oklahoma
- 2.7 6 km SE of Cushing, Oklahoma
- 2.7 2 km SSE 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.