QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Stillwater, OK

No earthquake was likely felt in Stillwater in the 24 hours to 7:06 am CST (13:06 UTC). The last one was M 3.4, 105 km (65 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 Stillwater

This page: a magnitude 1.6 earthquake was recorded 10 km (6 mi) northeast of Stillwater, OK, at 1:04 pm CDT on 27 September 2025 (18:04 UTC), 7.2 km deep.

USGS: 7 km SW of Glencoe, Oklahoma

10 km (6 mi) NE of Stillwater, OK · 93 km (58 mi) NNE of Oklahoma City, OK

1:04 pm CDT, Sep 27, 2025 · · 7.2 km deep · released about 8.1 lb of TNT

10 km30 km60 km120 km N Payne County 12 kmPawnee County 29 kmNoble County 32 kmLogan County 52 kmLincoln County 54 kmCreek County 62 kmOsage County 71 kmKay County 71 kmGarfield County 75 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
1:04 pm CDT on 27 September 2025 ()
Where
10 km (6 mi) northeast of Stillwater, OK · earthquakes near Stillwater
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.6 (ml)
Depth
7.2 km below the surface
Felt
no reports yet
Nearest
Payne County, 12 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 408 days ago

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 5 km (3 mi) from the epicentre. In Stillwater, 10 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: Pawnee, Perkins, Yale, Cushing, Perry.

How big was it?

This earthquake released about 8.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 8.1 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 5.8 on 2016-09-03 — about 1,900,000 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 36.1852, -96.9823. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Payne County, OK 12 km (7 mi) S earthquakes near Payne County
Pawnee County, OK 29 km (18 mi) ENE earthquakes near Pawnee County
Noble County, OK 32 km (20 mi) NW earthquakes near Noble County
Logan County, OK 52 km (32 mi) SW earthquakes near Logan County
Lincoln County, OK 54 km (34 mi) S earthquakes near Lincoln County
Creek County, OK 62 km (39 mi) ESE earthquakes near Creek County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

42 earthquakes have been recorded within 50 km since this one.

  1. 0.1 10 km ESE of Marland, Oklahoma
  2. 0.9 10 km WSW of Shamrock, Oklahoma
  3. 0.8 10 km NW of Pawnee, Oklahoma
  4. 0.6 8 km ESE of Marland, Oklahoma
  5. 1.5 5 km ENE of Drumright, Oklahoma
  6. 1.2 15 km NNE of Morrison, Oklahoma
  7. 0.9 15 km NW of Pawnee, Oklahoma
  8. 1.9 7 km WSW of Langston, Oklahoma
  9. 1.4 5 km ENE of Drumright, Oklahoma
  10. 0.6 10 km WSW of Shamrock, Oklahoma
  11. 1.4 10 km WSW of Shamrock, Oklahoma
  12. 2.0 10 km WSW of Shamrock, Oklahoma
  13. 1.5 6 km ENE of Drumright, Oklahoma
  14. 0.8 2 km SE of Carney, Oklahoma
  15. 2.2 6 km NNW of Red Rock, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.