QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

Earthquake near Stroud, OK

No earthquake was likely felt in Stroud in the 24 hours to 3:29 pm CST (21:29 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 2.6 earthquake was recorded 7 km (4 mi) west-southwest of Stroud, OK, at 10:46 am CDT on 31 March 2020 (15:46 UTC), 8.5 km deep. 9 people have reported feeling it to USGS.

USGS: 4 km NE of Davenport, Oklahoma

77 km (48 mi) ENE of Oklahoma City, OK · 54 km (34 mi) SE of Stillwater, OK

10:46 am CDT, Mar 31, 2020 · · 8.5 km deep · released about 230 lb of TNT

10 km30 km60 km120 km N Lincoln County 14 kmCreek County 37 kmPayne County 44 kmOkfuskee County 47 kmPottawatomie County 62 kmOklahoma County 64 kmPawnee County 65 kmSeminole County 65 kmLogan County 68 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
10:46 am CDT on 31 March 2020 ()
Where
7 km (4 mi) west-southwest of Stroud, OK · earthquakes near Stroud
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.6 (ml)
Depth
8.5 km below the surface
Felt
9 reports · strongest reported intensity V
Nearest
Lincoln County, 14 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2342 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 50 km (31 mi) from the epicentre. In Stroud, 7 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 7 km, intensity III · Chandler 14 km, intensity III · Prague 28 km, intensity II · Cushing 28 km, intensity II · Perkins 38 km, intensity II · Yale 42 km, intensity II · Luther 43 km, intensity II · Shawnee 48 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 230 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 65,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 46,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.1× the energy of this one
  4. This earthquake M 2.6 about 230 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 4,100 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 · 23 km S 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 35.7333, -96.7312. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lincoln County, OK 14 km (9 mi) WSW earthquakes near Lincoln County
Creek County, OK 37 km (23 mi) ENE earthquakes near Creek County
Payne County, OK 44 km (28 mi) NNW earthquakes near Payne County
Okfuskee County, OK 47 km (29 mi) SE earthquakes near Okfuskee County
Pottawatomie County, OK 62 km (38 mi) SSW earthquakes near Pottawatomie County
Oklahoma County, OK 64 km (40 mi) WSW earthquakes near Oklahoma County

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

Aftershocks so far

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

  1. 1.9 8 km NW of Prague, Oklahoma
  2. 1.7 5 km NNE of Stroud, Oklahoma
  3. 1.7 5 km NNE of Stroud, Oklahoma
  4. 1.7 5 km NNE of Stroud, Oklahoma
  5. 1.7 4 km NW of Cromwell, Oklahoma
  6. 1.9 5 km NNE of Stroud, Oklahoma
  7. 1.8 Oklahoma
  8. 1.9 5 km NNE of Stroud, Oklahoma
  9. 1.6 5 km N of Stroud, Oklahoma
  10. 1.5 5 km N of Stroud, Oklahoma
  11. 2.1 5 km N of Stroud, Oklahoma
  12. 2.0 5 km N of Stroud, Oklahoma
  13. 1.8 5 km N of Stroud, Oklahoma
  14. 1.9 5 km N of Stroud, Oklahoma
  15. 1.9 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.