QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Earthquake near Anthony, KS

No earthquake was likely felt in Anthony in the 24 hours to 3:40 pm CST (21:40 UTC). The last one was M 3.4, 172 km (107 mi) S, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Anthony

This page: a magnitude 2.9 earthquake was recorded 25 km (15 mi) south of Anthony, KS, at 10:58 am CST on 14 February 2016 (16:58 UTC), 5.6 km deep. 1 person has reported feeling it to USGS.

USGS: 7 km S of Manchester, Oklahoma

60 km (37 mi) NNW of Enid, OK · 104 km (64 mi) SW of Wichita, KS

10:58 am CST, Feb 14, 2016 · · 5.6 km deep · released about 680 lb of TNT

10 km30 km60 km120 km N Grant County 26 kmHarper County 29 kmAlfalfa County 35 kmSumner County 58 kmGarfield County 65 kmBarber County 67 kmKingman County 70 kmWoods County 78 kmKay 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
10:58 am CST on 14 February 2016 ()
Where
25 km (15 mi) south of Anthony, KS · earthquakes near Anthony
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.9 (ml)
Depth
5.6 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Grant County, 26 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1563 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 67 km (42 mi) from the epicentre. In Anthony, 25 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: Anthony 25 km, intensity III · Cherokee 35 km, intensity III · Caldwell 39 km, intensity II · Helena 48 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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

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 36.9304, -98.0265. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grant County, OK 26 km (16 mi) SE earthquakes near Grant County
Harper County, KS 29 km (18 mi) N earthquakes near Harper County
Alfalfa County, OK 35 km (21 mi) SW earthquakes near Alfalfa County
Sumner County, KS 58 km (36 mi) NE earthquakes near Sumner County
Garfield County, OK 65 km (40 mi) SSE earthquakes near Garfield County
Barber County, KS 67 km (42 mi) WNW earthquakes near Barber County

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

Aftershocks so far

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

  1. 2.6 5 km E of Pond Creek, Oklahoma
  2. 1.7 3 km E of Bluff City, Kansas
  3. 2.5 7 km E of Nescatunga, Oklahoma
  4. 2.1 6 km SSE of Harper, Kansas
  5. 3.1 5 km E of Pond Creek, Oklahoma
  6. 1.9 7 km NE of Anthony, Kansas
  7. 1.5 Kansas
  8. 1.9 8 km ENE of Caldwell, Kansas
  9. 1.6 8 km ENE of Caldwell, Kansas
  10. 1.9 8 km ENE of Caldwell, Kansas
  11. 1.9 5 km SE of Freeport, Kansas
  12. 1.5 4 km ESE of Manchester, Oklahoma
  13. 1.7 6 km SSE of Anthony, Kansas
  14. 2.6 8 km WNW of Medford, Oklahoma
  15. 2.5 12 km WNW of Caldwell, Kansas

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.