Earthquake · automatic estimate, may change
M 1.9ml
Earthquake near Piedmont, OK
No earthquake was likely felt in Piedmont in the 24 hours to 4:01 pm CST (22:01 UTC). The last one was M 3.4, 27 km (17 mi) W, at 5:53 am CST on 7 November 2026, estimated intensity III (weak) in town; 23 felt reports to USGS. Every earthquake near Piedmont
This page: a magnitude 1.9 earthquake was recorded 4 km (3 mi) west-southwest of Piedmont, OK, at 10:21 pm CDT on 13 August 2024 (03:21 UTC), 5.0 km deep. The magnitude and location are an automatic first estimate and may change.
USGS: 4 km WSW of Piedmont, Oklahoma
31 km (19 mi) NW of Oklahoma City, OK
- When
- 10:21 pm CDT on 13 August 2024 ()
- Where
- 4 km (3 mi) west-southwest of Piedmont, OK · earthquakes near Piedmont
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 1.9 (ml)
- Depth
- 5.0 km below the surface
- Felt
- no reports yet
- Nearest
- Canadian County, 20 km WSW
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 820 days ago
Earthquake alerts for Piedmont, 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 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 21 km (13 mi) from the epicentre. In Piedmont, 4 km away, the estimate is intensity II (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: Yukon 14 km, intensity II · El Reno 18 km, intensity II · Bethany 19 km, intensity II · Okarche 20 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 22 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 680,000× the energy of this one
- Magna, Utah 2020 M 5.7 480,000× the energy of this one
- Around the size people start to feel M 3.0 43× the energy of this one
- This earthquake M 1.9 about 22 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 4.3 on 2024-01-13 — about 3,300 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 35.6304, -97.7901. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Canadian County, OK | 20 km (12 mi) | WSW | earthquakes near Canadian County |
| Oklahoma County, OK | 35 km (22 mi) | ESE | earthquakes near Oklahoma County |
| Kingfisher County, OK | 38 km (23 mi) | NNW | earthquakes near Kingfisher County |
| Logan County, OK | 44 km (27 mi) | NE | earthquakes near Logan County |
| Cleveland County, OK | 63 km (39 mi) | SE | earthquakes near Cleveland County |
| Blaine County, OK | 64 km (40 mi) | WNW | earthquakes near Blaine County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 1.7 3 km WNW of Bridge Creek, Oklahoma
- 1.6 2 km NW of Bridge Creek, Oklahoma
- 1.5 3 km WNW of Bridge Creek, Oklahoma
- 1.5 3 km WNW of Bridge Creek, Oklahoma
- 1.6 3 km WNW of Bridge Creek, Oklahoma
- 1.5 3 km W of Bridge Creek, Oklahoma
- 1.5 2 km W of Bridge Creek, Oklahoma
- 1.8 2 km WNW of Bridge Creek, Oklahoma
- 1.5 3 km W of Bridge Creek, Oklahoma
- 1.8 2 km WNW of Bridge Creek, Oklahoma
- 1.8 6 km ENE of Edmond, Oklahoma
- 2.3 13 km ESE of Dover, Oklahoma
- 1.7 13 km ESE of Dover, Oklahoma
- 1.7 8 km WSW of El Reno, Oklahoma
- 1.9 10 km SW of El Reno, 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.