QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

Earthquake near Caldwell, KS

No earthquake was likely felt in Caldwell in the 24 hours to 8:41 am CST (14:41 UTC). The last one was M 3.4, 163 km (101 mi) SSW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Caldwell

This page: a magnitude 2.4 earthquake was recorded 13 km (8 mi) south-southwest of Caldwell, KS, at 2:41 pm CDT on 27 October 2022 (19:41 UTC), 4.5 km deep. 1 person has reported feeling it to USGS.

USGS: 0 km ESE of Renfrow, Oklahoma

89 km (55 mi) SSW of Wichita, KS

2:41 pm CDT, Oct 27, 2022 · · 4.5 km deep · released about 100 lb of TNT

Every earthquake near Caldwell Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 20 kmSumner County 37 kmKay County 47 kmHarper County 47 kmGarfield County 62 kmAlfalfa County 64 kmNoble County 70 kmCowley County 80 kmKingman County 83 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
2:41 pm CDT on 27 October 2022 ()
Where
13 km (8 mi) south-southwest of Caldwell, KS · earthquakes near Caldwell
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.4 (ml)
Depth
4.5 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Grant County, 20 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1408 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 39 km (24 mi) from the epicentre. In Caldwell, 13 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: Caldwell 13 km, intensity III · Blackwell 35 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.4× the energy of this one
  4. This earthquake M 2.4 about 100 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 4.5 on 2022-01-31 — about 1,700 times the energy of this one.

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 36.9243, -97.6485. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grant County, OK 20 km (12 mi) SW earthquakes near Grant County
Sumner County, KS 37 km (23 mi) NNE earthquakes near Sumner County
Kay County, OK 47 km (29 mi) ESE earthquakes near Kay County
Harper County, KS 47 km (29 mi) NW earthquakes near Harper County
Garfield County, OK 62 km (39 mi) SSW earthquakes near Garfield County
Alfalfa County, OK 64 km (40 mi) WSW earthquakes near Alfalfa County

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

Aftershocks so far

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

  1. 2.4 7 km SSE of Bluff City, Kansas
  2. 1.7 8 km E of Nescatunga, Oklahoma
  3. 1.9 8 km E of Nescatunga, Oklahoma
  4. 2.1 8 km E of Nescatunga, Oklahoma
  5. 1.9 8 km E of Nescatunga, Oklahoma
  6. 1.6 9 km WSW of Hunnewell, Kansas
  7. 2.0 8 km E of Nescatunga, Oklahoma
  8. 2.0 9 km ESE of Jefferson, Oklahoma
  9. 1.8 9 km W of Lamont, Oklahoma
  10. 1.5 6 km E of Nescatunga, Oklahoma
  11. 2.1 7 km E of Nescatunga, Oklahoma
  12. 2.1 3 km WNW of Renfrow, Oklahoma
  13. 1.8 3 km NW of Renfrow, Oklahoma
  14. 1.7 1 km WNW of Nardin, Oklahoma
  15. 1.6 7 km E of Nescatunga, 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.