QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7mb_lg

Earthquake near Plainville, KS

USGS: 15 km NW of Natoma, Kansas

3:01 am CDT, Mar 17, 2018 · · 5.0 km deep · released about 340 lb of TNT

10 km30 km60 km120 km N Rooks County 17 kmOsborne County 31 kmEllis County 47 kmRussell County 53 kmPhillips County 56 kmSmith County 61 kmGraham County 65 kmTrego County 77 kmMitchell 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
3:01 am CDT on 17 March 2018 ()
Where
17 km (10 mi) ENE of Plainville, KS · earthquakes near Plainville
Magnitude
M 2.7 (mb_lg)
Depth
5.0 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Rooks County, 17 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2963 days ago

A magnitude 2.7 earthquake was recorded 17 km (10 mi) ENE of Plainville, KS, at 3:01 am CDT on 17 March 2018 (08:01 UTC). 4 people have reported feeling it to USGS. This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

Earthquakes near other towns within 30 km: Stockton.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 39.3067, -99.1296. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rooks County, KS 17 km (11 mi) WNW earthquakes near Rooks County
Osborne County, KS 31 km (20 mi) E earthquakes near Osborne County
Ellis County, KS 47 km (29 mi) SSW earthquakes near Ellis County
Russell County, KS 53 km (33 mi) SE earthquakes near Russell County
Phillips County, KS 56 km (35 mi) NNW earthquakes near Phillips County
Smith County, KS 61 km (38 mi) NNE earthquakes near Smith County

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

Aftershocks so far

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

  1. 2.5 9 km SW of Natoma, Kansas
  2. 2.4 12 km NE of Damar, Kansas
  3. 2.9 7 km N of Hays, Kansas
  4. 2.9 5 km SW of Kirwin, Kansas
  5. 2.8 10 km SSW of Stockton, Kansas
  6. 2.8 8 km NNW of Stockton, Kansas
  7. 3.3 7 km NNW of Stockton, Kansas
  8. 2.5 1 km NE of Zurich, Kansas
  9. 2.5 11 km NNE of Stockton, Kansas
  10. 2.6 14 km WSW of Natoma, Kansas
  11. 2.5 3 km NE of Bogue, Kansas
  12. 3.0 4 km SE of Paradise, Kansas
  13. 3.0 2 km SW of Zurich, Kansas
  14. 2.7 11 km NW of Stockton, Kansas
  15. 3.4 10 km NW of Woodston, 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.