Earthquake near Marion, KS

USGS: 7 km ESE of Marion, Kansas

78 km (48 mi) NNE of Wichita, KS

10:09 pm CDT, Jul 30, 2018 · 2018-07-31 03:09 UTC · 5.0 km deep · released about 120 lb of TNT

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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: 10:09 pm CDT on 30 July 2018 (2018-07-31 03:09 UTC)
Where: 8 km (5 mi) ESE of Marion, KS · earthquakes near Marion
Magnitude: M 2.4 (mb_lg)
Depth: 5.0 km below the surface
Felt: 10 reports · strongest reported intensity IV
Nearest: Marion County, 15 km WNW
Status: Reviewed by a seismologist

USGS · last changed by USGS 2908 days ago · we first saw it 2908 days ago

A magnitude 2.4 earthquake was recorded 8 km (5 mi) ESE of Marion, KS, at 10:09 pm CDT on 30 July 2018 (03:09 UTC). 10 people have reported feeling it to USGS. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Peabody, Hillsboro.

How big was it?

This earthquake released about 120 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.

Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
Magna, Utah 2020 M 5.7 89,000× the energy of this one
Around the size people start to feel M 3.0 7.9× the energy of this one
This earthquake M 2.4 about 120 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

Map loads when it scrolls into view

Epicentre 38.3140, -96.9398. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction from the epicentre
Marion County, KS	15 km (9 mi)	WNW	earthquakes near Marion County
Chase County, KS	30 km (19 mi)	E	earthquakes near Chase County
Morris County, KS	49 km (30 mi)	NNE	earthquakes near Morris County
Harvey County, KS	52 km (33 mi)	SW	earthquakes near Harvey County
Butler County, KS	61 km (38 mi)	S	earthquakes near Butler County
McPherson County, KS	62 km (39 mi)	W	earthquakes near McPherson County

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

Aftershocks so far

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

2.3 14 km SE of Lincolnville, Kansas 11:46 UTC
2.6 14 km SE of Lincolnville, Kansas 14:58 UTC
2.5 15 km SE of Lincolnville, Kansas 11:32 UTC
2.5 Kansas 06:22 UTC
2.8 7 km SW of Woodbine, Kansas 20:06 UTC
2.2 13 km SE of Lincolnville, Kansas 16:03 UTC
2.5 12 km SSE of Lincolnville, Kansas 17:04 UTC
2.8 14 km SE of Lincolnville, Kansas 15:21 UTC
2.2 5 km ESE of Marion, Kansas 05:04 UTC
2.4 5 km NNE of Hope, Kansas 22:46 UTC
2.4 7 km ENE of Hope, Kansas 11:47 UTC
2.5 6 km ENE of Hope, Kansas 03:59 UTC
2.4 6 km SW of Woodbine, Kansas 02:05 UTC
2.0 2 km SSW of Marion, Kansas 23:43 UTC
3.1 7 km SW of Woodbine, Kansas 13:07 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 02:08 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

The official USGS event page — the source of record for every value above
Did you feel it? Report it to USGS — reports go to USGS, not to us
ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.