QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4mb_lg

7 km S of Arnold, Nebraska

· 5.0 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Logan County 30 kmCuster County 38 kmLincoln County 58 kmDawson County 62 kmThomas County 63 kmBlaine County 66 kmLoup County 82 kmMcPherson County 85 kmFrontier County 94 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
Magnitude
M 2.4 (mb_lg)
Depth
5.0 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Logan County, 30 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2917 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

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.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. 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.

Where

Epicentre 41.3555, -100.1773. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Logan County, NE 30 km (19 mi) SE of here earthquakes near Logan County
Custer County, NE 38 km (24 mi) W of here earthquakes near Custer County
Lincoln County, NE 58 km (36 mi) NE of here earthquakes near Lincoln County
Dawson County, NE 62 km (39 mi) NNW of here earthquakes near Dawson County
Thomas County, NE 63 km (39 mi) SSE of here earthquakes near Thomas County
Blaine County, NE 66 km (41 mi) SSW of here earthquakes near Blaine County

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

Aftershocks so far

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

  1. 3.0 10 km S of Arnold, Nebraska
  2. 2.1 5 km S of Arnold, Nebraska
  3. 2.6 8 km SE of Arnold, Nebraska
  4. 2.5 13 km WNW of Callaway, Nebraska
  5. 2.6 7 km WSW of Arnold, Nebraska
  6. 2.6 6 km SE of Arnold, Nebraska
  7. 2.7 4 km E of Arnold, Nebraska
  8. 3.6 7 km SE of Arnold, Nebraska
  9. 2.0 4 km SE of Arnold, Nebraska
  10. 2.8 11 km SE of Arnold, Nebraska

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2018-06-30 — it released about 350 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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