QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

9 km W of Aline, Oklahoma

· 5.9 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Major County 22 kmAlfalfa County 32 kmWoods County 36 kmWoodward County 64 kmGarfield County 70 kmBlaine County 71 kmDewey County 72 kmGrant County 76 kmBarber 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 1.5 (ml)
Depth
5.9 km below the surface
Felt
no reports yet
Nearest
Major County, 22 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2599 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 5.6 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 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 36.5078, -98.5597. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Major County, OK 22 km (13 mi) N of here earthquakes near Major County
Alfalfa County, OK 32 km (20 mi) SW of here earthquakes near Alfalfa County
Woods County, OK 36 km (23 mi) SE of here earthquakes near Woods County
Woodward County, OK 64 km (40 mi) E of here earthquakes near Woodward County
Garfield County, OK 70 km (44 mi) WNW of here earthquakes near Garfield County
Blaine County, OK 71 km (44 mi) N of here earthquakes near Blaine County

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

Aftershocks so far

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

  1. 1.7 9 km NE of Quinlan, Oklahoma
  2. 1.9 10 km NE of Quinlan, Oklahoma
  3. 2.1 3 km SSW of Cherokee, OK
  4. 2.0 6 km E of Aline, Oklahoma
  5. 2.0 5 km ESE of Aline, Oklahoma
  6. 1.6 8 km WSW of Waynoka, Oklahoma
  7. 1.8 18 km SSE of Waynoka, Oklahoma
  8. 1.7 10 km W of Fairview, Oklahoma
  9. 2.1 5 km ESE of Aline, Oklahoma
  10. 2.7 17 km SE of Waynoka, Oklahoma
  11. 2.0 9 km ESE of Alva, Oklahoma
  12. 1.7 9 km W of Fairview, Oklahoma
  13. 2.0 9 km W of Fairview, Oklahoma
  14. 3.5 17 km SE of Waynoka, Oklahoma
  15. 1.9 5 km ESE of Aline, 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 240,000 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.