QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

8 km W of Drummond, Oklahoma

· 6.2 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 31 kmMajor County 37 kmKingfisher County 44 kmAlfalfa County 50 kmBlaine County 55 kmGrant County 61 kmLogan County 75 kmWoods County 80 kmNoble County 80 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
Magnitude
M 1.9 (ml)
Depth
6.2 km below the surface
Felt
no reports yet
Nearest
Garfield County, 31 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2483 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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.

Where

Epicentre 36.3090, -98.1297. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 31 km (20 mi) WSW of here earthquakes near Garfield County
Major County, OK 37 km (23 mi) E of here earthquakes near Major County
Kingfisher County, OK 44 km (27 mi) NNW of here earthquakes near Kingfisher County
Alfalfa County, OK 50 km (31 mi) SSE of here earthquakes near Alfalfa County
Blaine County, OK 55 km (34 mi) NNE of here earthquakes near Blaine County
Grant County, OK 61 km (38 mi) SSW of here earthquakes near Grant County

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

Aftershocks so far

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

  1. 1.9 6 km N of Ames, Oklahoma
  2. 2.0 5 km N of Ames, Oklahoma
  3. 2.1 5 km NNE of Ames, Oklahoma
  4. 2.2 4 km SE of Meno, Oklahoma
  5. 2.2 6 km N of Ames, Oklahoma
  6. 2.1 5 km NNE of Ames, Oklahoma
  7. 2.5 4 km SSW of Goltry, Oklahoma
  8. 2.2 4 km SSW of Goltry, Oklahoma
  9. 3.4 5 km NNE of Ames, Oklahoma
  10. 2.8 5 km NNE of Ames, Oklahoma
  11. 2.4 2 km SSE of Meno, Oklahoma
  12. 2.2 5 km N of Ames, Oklahoma
  13. 2.3 5 km NNE of Ames, Oklahoma
  14. 1.6 3 km ESE of Meno, Oklahoma
  15. 1.7 5 km N of Ames, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2018-03-04 — it released about 2,800 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.