QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Cushing, OK

No earthquake was likely felt in Cushing in the 24 hours to 11:34 am CST (17:34 UTC). The last one was M 3.4, 122 km (76 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 Cushing

This page: a magnitude 1.8 earthquake was recorded 15 km (10 mi) south-southeast of Cushing, OK, at 5:20 pm CDT on 18 June 2020 (22:20 UTC), 7.3 km deep.

USGS: 10 km WSW of Shamrock, Oklahoma

86 km (54 mi) ENE of Oklahoma City, OK · 46 km (29 mi) SE of Stillwater, OK

5:20 pm CDT, Jun 18, 2020 · · 7.3 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Lincoln County 25 kmCreek County 28 kmPayne County 35 kmPawnee County 50 kmOkfuskee County 55 kmLogan County 69 kmOkmulgee County 70 kmTulsa County 73 kmOklahoma County 73 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
5:20 pm CDT on 18 June 2020 ()
Where
15 km (10 mi) south-southeast of Cushing, OK · earthquakes near Cushing
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.8 (ml)
Depth
7.3 km below the surface
Felt
no reports yet
Nearest
Lincoln County, 25 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2336 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 15 km (9 mi) from the epicentre. In Cushing, 15 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: Stroud 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 65,000 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 · 37 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 35.8610, -96.6890. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lincoln County, OK 25 km (15 mi) SW earthquakes near Lincoln County
Creek County, OK 28 km (18 mi) E earthquakes near Creek County
Payne County, OK 35 km (22 mi) NW earthquakes near Payne County
Pawnee County, OK 50 km (31 mi) N earthquakes near Pawnee County
Okfuskee County, OK 55 km (34 mi) SE earthquakes near Okfuskee County
Logan County, OK 69 km (43 mi) W earthquakes near Logan County

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

Aftershocks so far

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

  1. 1.7 7 km SE of Meridian, Oklahoma
  2. 1.7 3 km ENE of Drumright, Oklahoma
  3. 1.7 3 km E of Drumright, Oklahoma
  4. 2.2 5 km SW of Glencoe, Oklahoma
  5. 2.7 4 km SW of Glencoe, Oklahoma
  6. 1.8 5 km ENE of Drumright, Oklahoma
  7. 1.9 5 km E of Drumright, Oklahoma
  8. 2.3 6 km SW of Glencoe, Oklahoma
  9. 1.6 Oklahoma
  10. 2.6 6 km SW of Glencoe, Oklahoma
  11. 1.6 2 km E of Luther, Oklahoma
  12. 2.0 5 km N of Stroud, Oklahoma
  13. 1.5 5 km N of Stroud, Oklahoma
  14. 1.6 5 km E of Drumright, Oklahoma
  15. 1.6 5 km ENE of Drumright, 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.