QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Tuttle, OK

No earthquake was likely felt in Tuttle in the 24 hours to 2:16 pm CST (20:16 UTC). The last one was M 3.4, 41 km (26 mi) NNW, at 5:53 am CST on 7 November 2026, estimated intensity III (weak) in town; 23 felt reports to USGS. Every earthquake near Tuttle

This page: a magnitude 1.8 earthquake was recorded 4 km (2 mi) south of Tuttle, OK, at 7:19 pm CDT on 21 March 2022 (00:19 UTC), 6.5 km deep. 5 people have reported feeling it to USGS.

USGS: 4 km S of Tuttle, Oklahoma

36 km (23 mi) SW of Oklahoma City, OK · 32 km (20 mi) WSW of Moore, OK

7:19 pm CDT, Mar 21, 2022 · · 6.5 km deep · released about 13 lb of TNT

Every earthquake near Tuttle Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grady County 27 kmCanadian County 35 kmMcClain County 43 kmCleveland County 45 kmOklahoma County 50 kmCaddo County 52 kmGarvin County 76 kmKingfisher County 78 kmPottawatomie County 78 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
7:19 pm CDT on 21 March 2022 ()
Where
4 km (2 mi) south of Tuttle, OK · earthquakes near Tuttle
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.8 (ml)
Depth
6.5 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Grady County, 27 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1628 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 14 km (9 mi) from the epicentre. In Tuttle, 4 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.

Likely felt in: Tuttle 4 km, intensity II · Minco 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 35.2550, -97.8170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grady County, OK 27 km (17 mi) SSW earthquakes near Grady County
Canadian County, OK 35 km (22 mi) NNW earthquakes near Canadian County
McClain County, OK 43 km (26 mi) SE earthquakes near McClain County
Cleveland County, OK 45 km (28 mi) E earthquakes near Cleveland County
Oklahoma County, OK 50 km (31 mi) NE earthquakes near Oklahoma County
Caddo County, OK 52 km (32 mi) W earthquakes near Caddo County

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

Aftershocks so far

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

  1. 1.7 4 km E of Minco, Oklahoma
  2. 1.6 2 km NE of Minco, Oklahoma
  3. 1.6 5 km ENE of Minco, Oklahoma
  4. 1.9 4 km E of Minco, Oklahoma
  5. 1.7 5 km ENE of Minco, Oklahoma
  6. 1.7 9 km ESE of Chickasha, Oklahoma
  7. 1.9 10 km ESE of Chickasha, Oklahoma
  8. 2.2 11 km ESE of Chickasha, Oklahoma
  9. 1.7 10 km ESE of Chickasha, Oklahoma
  10. 1.7 11 km ESE of Chickasha, Oklahoma
  11. 1.7 6 km NNE of Newcastle, Oklahoma
  12. 1.6 5 km SW of Bridge Creek, Oklahoma
  13. 1.6 5 km WSW of Bridge Creek, Oklahoma
  14. 1.6 5 km WSW of Bridge Creek, Oklahoma
  15. 1.6 7 km SSW of Bridge Creek, 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.