quarry blast · reviewed by a seismologist
M 1.5ml
Earthquake near Drumright, OK
No earthquake was likely felt in Drumright in the 24 hours to 3:47 pm CST (21:47 UTC). The last one was M 3.4, 137 km (85 mi) WSW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Drumright
No: USGS classifies this as a quarry blast, not an earthquake. A magnitude 1.5 quarry blast was recorded 7 km (4 mi) east-northeast of Drumright, OK, at 4:57 pm CDT on 28 August 2026 (21:57 UTC), less than 1 km deep.
USGS: 6 km ENE of Drumright, Oklahoma
58 km (36 mi) WSW of Tulsa, OK · 51 km (31 mi) ESE of Stillwater, OK
- When
- 4:57 pm CDT on 28 August 2026 ()
- Where
- 7 km (4 mi) east-northeast of Drumright, OK · earthquakes near Drumright
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 1.5 (ml)
- Depth
- 0.0 km below the surface
- Felt
- no reports yet
- Nearest
- Creek County, 18 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 75 days ago
Earthquake alerts for Drumright, 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 it was probably too small to be felt, even directly above it. In Drumright, 7 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.
Earthquakes near other towns within 30 km: Oilton, Yale, Mannford, Cushing, Bristow, Kellyville.
USGS catalogues this as quarry blast, not an earthquake.
How big was it?
This earthquake released about 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
- Around the size people start to feel M 3.0 160× the energy of this one
- This earthquake M 1.5 about 5.9 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 5.0 on 2016-11-07 — about 160,000 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 36.0097, -96.5327. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Creek County, OK | 18 km (11 mi) | SE | earthquakes near Creek County |
| Pawnee County, OK | 37 km (23 mi) | NNW | earthquakes near Pawnee County |
| Payne County, OK | 41 km (25 mi) | W | earthquakes near Payne County |
| Lincoln County, OK | 46 km (29 mi) | SW | earthquakes near Lincoln County |
| Tulsa County, OK | 55 km (34 mi) | ENE | earthquakes near Tulsa County |
| Okfuskee County, OK | 63 km (39 mi) | SSE | earthquakes near Okfuskee County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
10 earthquakes have been recorded within 50 km since this one.
- 0.9 10 km WSW of Shamrock, Oklahoma
- 1.5 5 km ENE of Drumright, Oklahoma
- 0.6 5 km N of Stroud, Oklahoma
- 1.4 5 km ENE of Drumright, Oklahoma
- 0.6 10 km WSW of Shamrock, Oklahoma
- 1.4 10 km WSW of Shamrock, Oklahoma
- 2.0 10 km WSW of Shamrock, Oklahoma
- 1.5 6 km ENE of Drumright, Oklahoma
- 0.8 2 km SE of Carney, Oklahoma
- 2.9 5 km N of Stroud, 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.