QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

Earthquake near Oklahoma City, OK

No earthquake was likely felt in Oklahoma City in the 24 hours to 10:08 am CST (16:08 UTC). The last one was M 3.4, 50 km (31 mi) WNW, at 5:53 am CST on 7 November 2026, estimated intensity III (weak) in town; 23 felt reports to USGS. Every earthquake near Oklahoma City

This page: a magnitude 3.3 earthquake was recorded 47 km (29 mi) south-southwest of Oklahoma City, OK, at 7:50 pm CDT on 1 May 2020 (00:50 UTC), 9.6 km deep. 44 people have reported feeling it to USGS.

USGS: 10 km SE of Amber, Oklahoma

47 km (29 mi) SSW of Oklahoma City, OK · 38 km (23 mi) SW of Moore, OK

7:50 pm CDT, May 1, 2020 · · 9.6 km deep · released about 1.2 tons of TNT

Every earthquake near Oklahoma City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grady County 13 kmMcClain County 32 kmCleveland County 43 kmCanadian County 52 kmCaddo County 55 kmOklahoma County 61 kmGarvin County 61 kmStephens County 69 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
7:50 pm CDT on 1 May 2020 ()
Where
47 km (29 mi) south-southwest of Oklahoma City, OK · earthquakes near Oklahoma City
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 3.3 (ml)
Depth
9.6 km below the surface
Felt
44 reports · strongest reported intensity IV
Nearest
Grady County, 13 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2307 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 217 km (135 mi) from the epicentre. In Oklahoma City, 47 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: Blanchard 12 km, intensity III · Chickasha 15 km, intensity III · Tuttle 21 km, intensity III · Minco 28 km, intensity III · Mustang 32 km, intensity III · Lindsay 34 km, intensity III · Norman 34 km, intensity III · Union City 35 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.2 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 6.7 140,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,600× the energy of this one
  4. This earthquake M 3.3 about 1.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.5× 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

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 35.1015, -97.7837. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grady County, OK 13 km (8 mi) SW earthquakes near Grady County
McClain County, OK 32 km (20 mi) ESE earthquakes near McClain County
Cleveland County, OK 43 km (27 mi) ENE earthquakes near Cleveland County
Canadian County, OK 52 km (32 mi) NNW earthquakes near Canadian County
Caddo County, OK 55 km (34 mi) W earthquakes near Caddo County
Oklahoma County, OK 61 km (38 mi) NE earthquakes near Oklahoma County

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

Aftershocks so far

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

  1. 1.9 5 km NE of Union City, Oklahoma
  2. 1.5 6 km NNE of Union City, Oklahoma
  3. 1.5 3 km ENE of Union City, Oklahoma
  4. 1.6 8 km SSE of Erin Springs, Oklahoma
  5. 1.5 4 km S of Tuttle, Oklahoma
  6. 1.6 3 km SSW of Tuttle, Oklahoma
  7. 1.6 3 km SW of Tuttle, Oklahoma
  8. 2.0 2 km NE of Newcastle, Oklahoma
  9. 1.5 2 km SW of Tuttle, Oklahoma
  10. 3.4 7 km SSE of Erin Springs, Oklahoma
  11. 2.3 4 km WNW of Minco, Oklahoma
  12. 1.7 2 km WNW of Minco, Oklahoma
  13. 1.7 3 km WSW of Minco, Oklahoma
  14. 1.5 7 km WSW of Blanchard, Oklahoma
  15. 1.8 3 km WNW of Minco, 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.