QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Caldwell, KS

No earthquake was likely felt in Caldwell in the 24 hours to 4:04 pm CST (22:04 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 1.6 earthquake was recorded 5 km (3 mi) east-southeast of Caldwell, KS, at 3:16 pm CDT on 17 June 2017 (20:16 UTC), 6.0 km deep.

USGS: 5 km ESE of Caldwell, Kansas

78 km (49 mi) SSW of Wichita, KS

3:16 pm CDT, Jun 17, 2017 · · 6.0 km deep · released about 9 lb of TNT

10 km30 km60 km120 km N Sumner County 26 kmGrant County 32 kmKay County 42 kmHarper County 50 kmCowley County 68 kmGarfield County 73 kmNoble County 75 kmAlfalfa County 75 kmSedgwick County 75 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
3:16 pm CDT on 17 June 2017 ()
Where
5 km (3 mi) east-southeast of Caldwell, KS · earthquakes near Caldwell
Magnitude
M 1.6 (ml)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Sumner County, 26 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3432 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 8 km (5 mi) from the epicentre. In Caldwell, 5 km away, the estimate is intensity II (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 5 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 9 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 4.1 on 2017-03-29 — about 4,700 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 37.0085, -97.5558. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sumner County, KS 26 km (16 mi) NNE earthquakes near Sumner County
Grant County, OK 32 km (20 mi) SW earthquakes near Grant County
Kay County, OK 42 km (26 mi) ESE earthquakes near Kay County
Harper County, KS 50 km (31 mi) WNW earthquakes near Harper County
Cowley County, KS 68 km (43 mi) ENE earthquakes near Cowley County
Garfield County, OK 73 km (45 mi) SSW earthquakes near Garfield County

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

Aftershocks so far

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

  1. 1.6 11 km N of Caldwell, Kansas
  2. 1.9 10 km N of Caldwell, Kansas
  3. 2.0 10 km N of Caldwell, Kansas
  4. 2.4 10 km N of Caldwell, Kansas
  5. 1.5 10 km N of Caldwell, Kansas
  6. 3.3 10 km N of Caldwell, Kansas
  7. 1.5 7 km SSE of Anthony, Kansas
  8. 1.7 7 km N of Argonia, Kansas
  9. 1.5 10 km WNW of Caldwell, Kansas
  10. 2.7 10 km WNW of Caldwell, Kansas
  11. 1.8 7 km N of Argonia, Kansas
  12. 1.7 7 km N of Argonia, Kansas
  13. 2.0 7 km S of Conway Springs, Kansas
  14. 1.5 7 km N of Argonia, Kansas
  15. 1.5 7 km N of Argonia, 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.