Earthquake · reviewed by a seismologist
M 3.4ml
Earthquake near Blackwell, OK
No earthquake was likely felt in Blackwell in the 24 hours to 6:14 am CST (12:14 UTC). The last one was M 3.4, 149 km (93 mi) SSW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Blackwell
This page: a magnitude 3.4 earthquake was recorded 10 km (6 mi) north of Blackwell, OK, at 10:13 pm CDT on 25 June 2025 (03:13 UTC), 7.8 km deep. 25 people have reported feeling it to USGS.
USGS: 4 km SE of Braman, Oklahoma
89 km (55 mi) S of Wichita, KS
- When
- 10:13 pm CDT on 25 June 2025 ()
- Where
- 10 km (6 mi) north of Blackwell, OK · earthquakes near Blackwell
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 3.4 (ml)
- Depth
- 7.8 km below the surface
- Felt
- 25 reports · strongest reported intensity IV
- Measured shaking
- intensity IV (ShakeMap)
- Nearest
- Kay County, 16 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 435 days ago
Earthquake alerts for Blackwell, OK
Get a notification in this browser when USGS records an earthquake near Blackwell, 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 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 257 km (160 mi) from the epicentre. In Blackwell, 10 km away, the estimate is intensity IV (light). 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: Blackwell 10 km, intensity IV · Ponca City 28 km, intensity III · Caldwell 32 km, intensity III · Wellington 42 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1.7 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 6.7 100,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 4,600× the energy of this one
- Magna, Utah 2020 M 5.7 3,200× the energy of this one
- This earthquake M 3.4 about 1.7 tons of TNT
- Around the size people start to feel M 3.0 this one released 3.5× 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 4.5 on 2022-01-31 — about 51 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 36.8945, -97.2913. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kay County, OK | 16 km (10 mi) | SE | earthquakes near Kay County |
| Sumner County, KS | 42 km (26 mi) | NNW | earthquakes near Sumner County |
| Grant County, OK | 46 km (28 mi) | WSW | earthquakes near Grant County |
| Cowley County, KS | 55 km (34 mi) | NE | earthquakes near Cowley County |
| Noble County, OK | 57 km (35 mi) | S | earthquakes near Noble County |
| Garfield County, OK | 73 km (45 mi) | SW | earthquakes near Garfield County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
17 earthquakes have been recorded within 50 km since this one.
- 1.2 3 km ENE of Medford, Oklahoma
- 0.1 10 km ESE of Marland, Oklahoma
- 0.6 8 km ESE of Marland, Oklahoma
- 1.1 4 km NW of Medford, Oklahoma
- 1.8 9 km NW of Renfrow, Oklahoma
- 1.5 8 km NNW of Hunter, Oklahoma
- 1.6 9 km NE of Blackwell, Oklahoma
- 2.2 6 km NNW of Red Rock, Oklahoma
- 2.4 3 km ENE of Medford, Oklahoma
- 1.5 4 km NE of Medford, Oklahoma
- 1.9 8 km NNW of Deer Creek, Oklahoma
- 1.6 4 km SSW of Hunnewell, Kansas
- 1.8 10 km W of Braman, Oklahoma
- 1.8 7 km N of Nardin, Oklahoma
- 1.5 6 km N of Nardin, 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.