QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Earthquake near Stroud, OK

No earthquake was likely felt in Stroud in the 24 hours to 2:30 am CST (08:30 UTC). The last one was M 3.4, 126 km (78 mi) W, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Stroud

This page: a magnitude 3.3 earthquake was recorded 11 km (7 mi) north of Stroud, OK, at 6:30 pm CST on 1 March 2017 (00:30 UTC), 6.0 km deep. 6 people have reported feeling it to USGS.

USGS: 9 km SW of Shamrock, Oklahoma

89 km (55 mi) ENE of Oklahoma City, OK · 50 km (31 mi) SE of Stillwater, OK

6:30 pm CST, Mar 1, 2017 · · 6.0 km deep · released about 1.3 tons of TNT

Every earthquake near Stroud Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Creek County 25 kmLincoln County 26 kmPayne County 40 kmOkfuskee County 51 kmPawnee County 53 kmOkmulgee County 65 kmTulsa County 70 kmLogan County 73 kmPottawatomie County 76 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
6:30 pm CST on 1 March 2017 ()
Where
11 km (7 mi) north of Stroud, OK · earthquakes near Stroud
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 3.3 (ml)
Depth
6.0 km below the surface
Felt
6 reports · strongest reported intensity V
Nearest
Creek County, 25 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3460 days ago

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 234 km (145 mi) from the epicentre. In Stroud, 11 km away, the estimate is intensity III (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: Stroud 11 km, intensity III · Cushing 19 km, intensity III · Chandler 26 km, intensity III · Yale 31 km, intensity III · Perkins 38 km, intensity III · Prague 40 km, intensity III · Stillwater 48 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 5.0 on 2016-11-07 — about 350 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.7 8 km NW of Prague, Oklahoma · 36 km SSW 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 35.8428, -96.6459. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Creek County, OK 25 km (16 mi) ENE earthquakes near Creek County
Lincoln County, OK 26 km (16 mi) SW earthquakes near Lincoln County
Payne County, OK 40 km (25 mi) NW earthquakes near Payne County
Okfuskee County, OK 51 km (32 mi) SE earthquakes near Okfuskee County
Pawnee County, OK 53 km (33 mi) N earthquakes near Pawnee County
Okmulgee County, OK 65 km (41 mi) ESE earthquakes near Okmulgee County

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

Aftershocks so far

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

  1. 2.5 1 km SW of Agra, Oklahoma
  2. 2.4 6 km NNE of Stillwater, Oklahoma
  3. 2.7 5 km N of Stroud, Oklahoma
  4. 2.5 6 km SW of Shamrock, Oklahoma
  5. 2.9 5 km NNE of Stillwater, Oklahoma
  6. 2.0 4 km NNE of Stillwater, Oklahoma
  7. 2.5 2 km SSE of Cushing, Oklahoma
  8. 3.1 9 km NE of Kendrick, Oklahoma
  9. 2.7 9 km WSW of Shamrock, Oklahoma
  10. 2.9 6 km SW of Shamrock, Oklahoma
  11. 3.1 6 km SW of Shamrock, Oklahoma
  12. 2.5 7 km NW of Fallis, Oklahoma
  13. 3.2 6 km W of Sparks, Oklahoma
  14. 2.6 7 km SE of Meridian, Oklahoma
  15. 2.5 2 km SE of Cushing, 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.