QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Grayville, IL

No earthquake was likely felt in Grayville in the 24 hours to 5:03 am CST (11:03 UTC). The last one was M 3.5, 34 km (21 mi) N, at 2:05 am CDT on 29 June 2026, estimated intensity III (weak) in town; 392 felt reports to USGS. Every earthquake near Grayville

This page: a magnitude 2.1 earthquake was recorded 6 km (4 mi) west-northwest of Grayville, IL, at 4:12 am CDT on 4 September 2025 (09:12 UTC), 24 km deep. 3 people have reported feeling it to USGS.

USGS: 5 km WNW of Grayville, Illinois

56 km (35 mi) NW of Evansville, IN

4:12 am CDT, Sep 4, 2025 · · 24 km deep · released about 46 lb of TNT

10 km30 km60 km120 km N Edwards County 16 kmWhite County 23 kmWabash County 27 kmPosey County 32 kmWayne County 37 kmGibson County 42 kmHamilton County 47 kmRichland County 49 kmVanderburgh County 50 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
4:12 am CDT on 4 September 2025 ()
Where
6 km (4 mi) west-northwest of Grayville, IL · earthquakes near Grayville
Illinois today
every earthquake in Illinois in the last 24 hours
Magnitude
M 2.1 (md)
Depth
24 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Edwards County, 16 km N
Nearest mapped fault
Wabash Valley liquefaction features, under 1 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 347 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 17 km (11 mi) from the epicentre. In Grayville, 6 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.

Earthquakes near other towns within 30 km: Albion, Carmi, Poseyville, Mount Carmel.

How big was it?

This earthquake released about 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 lists 3 earthquakes of M5 or more within 50 km:

  1. 5.3 5 km SSW of Norris City, Illinois · 46 km SW of this epicentre
  2. 5.2 2 km ESE of Claremont, Illinois · 49 km N of this epicentre
  3. 5.2 7 km NNE of Bellmont, Illinois · 25 km NE of this epicentre

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 38.2748, -88.0583. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Edwards County, IL 16 km (10 mi) N earthquakes near Edwards County
White County, IL 23 km (15 mi) SSW earthquakes near White County
Wabash County, IL 27 km (17 mi) NE earthquakes near Wabash County
Posey County, IN 32 km (20 mi) SSE earthquakes near Posey County
Wayne County, IL 37 km (23 mi) WNW earthquakes near Wayne County
Gibson County, IN 42 km (26 mi) E earthquakes near Gibson County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 3.5 6 km NE of West Salem, Illinois

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.