QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

5 km SSE of Dacoma, Oklahoma

· 7.6 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 24 kmWoods County 31 kmMajor County 33 kmWoodward County 68 kmBarber County 69 kmGrant County 71 kmGarfield County 73 kmHarper County 77 kmDewey County 82 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 1.5 (ml)
Depth
7.6 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 24 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2596 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 36.6110, -98.5497. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 24 km (15 mi) WSW of here earthquakes near Alfalfa County
Woods County, OK 31 km (19 mi) ESE of here earthquakes near Woods County
Major County, OK 33 km (21 mi) N of here earthquakes near Major County
Woodward County, OK 68 km (42 mi) ENE of here earthquakes near Woodward County
Barber County, KS 69 km (43 mi) S of here earthquakes near Barber County
Grant County, OK 71 km (44 mi) WSW of here earthquakes near Grant 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. 2.3 Oklahoma
  2. 2.0 3 km SE of Meno, Oklahoma
  3. 2.0 3 km SE of Meno, Oklahoma
  4. 2.1 3 km SE of Meno, Oklahoma
  5. 1.7 9 km NE of Quinlan, Oklahoma
  6. 1.9 10 km NE of Quinlan, Oklahoma
  7. 2.1 3 km SSW of Cherokee, OK
  8. 2.0 6 km E of Aline, Oklahoma
  9. 2.0 5 km ESE of Aline, Oklahoma
  10. 1.6 8 km WSW of Waynoka, Oklahoma
  11. 1.8 18 km SSE of Waynoka, Oklahoma
  12. 1.7 10 km W of Fairview, Oklahoma
  13. 2.1 5 km ESE of Aline, Oklahoma
  14. 2.7 17 km SE of Waynoka, Oklahoma
  15. 2.0 9 km ESE of Alva, 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 5.1 on 2016-02-13 — it released about 220,000 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.