Earthquake · reviewed by a seismologist
M 1.7ml
Oklahoma
Yes. A magnitude 1.7 earthquake was recorded in Oklahoma, 69 km (43 mi) E of Oklahoma City, OK, at 1:17 am CDT on 17 July 2023 (06:17 UTC), 7.8 km deep.
69 km (43 mi) E of Oklahoma City, OK · 57 km (35 mi) E of Midwest City, OK
- When
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 1.7 (ml)
- Depth
- 7.8 km below the surface
- Felt
- no reports yet
- Nearest
- Lincoln County, 22 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1213 days ago
Earthquake alerts for Prague, OK
Get a notification in this browser when USGS records an earthquake near Prague, 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 minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 9 km (6 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: Prague 8 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 92× the energy of this one
- This earthquake M 1.7 about 10 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 5,800 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 WSW 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 35.5367, -96.7548. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lincoln County, OK | 22 km (14 mi) | NNW | earthquakes near Lincoln County |
| Okfuskee County, OK | 39 km (25 mi) | E | earthquakes near Okfuskee County |
| Pottawatomie County, OK | 41 km (25 mi) | SSW | earthquakes near Pottawatomie County |
| Seminole County, OK | 44 km (28 mi) | SSE | earthquakes near Seminole County |
| Creek County, OK | 53 km (33 mi) | NE | earthquakes near Creek County |
| Oklahoma County, OK | 59 km (37 mi) | W | earthquakes near Oklahoma County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
59 earthquakes have been recorded within 50 km since this one.
- 2.9 8 km SE of Sparks, Oklahoma
- 2.9 8 km SE of Sparks, Oklahoma
- 1.6 8 km NW of Prague, Oklahoma
- 1.9 9 km WNW of Prague, Oklahoma
- 2.4 9 km WNW of Prague, Oklahoma
- 1.8 9 km SE of Sparks, Oklahoma
- 3.2 8 km SE of Sparks, Oklahoma
- 1.7 9 km NW of Prague, Oklahoma
- 2.4 7 km SSE of Sparks, Oklahoma
- 3.0 8 km NW of Prague, Oklahoma
- 2.2 9 km SE of Sparks, Oklahoma
- 1.6 9 km WNW of Prague, Oklahoma
- 1.6 8 km NW of Prague, Oklahoma
- 2.2 8 km NW of Prague, Oklahoma
- 1.6 9 km SE of Sparks, 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.