QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8mb_lg

9 km E of Cowles, Nebraska

· 10.0 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Webster County 14 kmNuckolls County 25 kmAdams County 41 kmJewell County 45 kmClay County 46 kmFranklin County 53 kmSmith County 58 kmThayer County 63 kmKearney County 64 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 2.8 (mb_lg)
Depth
10.0 km below the surface
Felt
no reports yet
Nearest
Webster County, 14 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 982 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 40.1755, -98.3374. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Webster County, NE 14 km (9 mi) E of here earthquakes near Webster County
Nuckolls County, NE 25 km (15 mi) W of here earthquakes near Nuckolls County
Adams County, NE 41 km (25 mi) SSE of here earthquakes near Adams County
Jewell County, KS 45 km (28 mi) NNW of here earthquakes near Jewell County
Clay County, NE 46 km (28 mi) SSW of here earthquakes near Clay County
Franklin County, NE 53 km (33 mi) E of here earthquakes near Franklin County

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

Aftershocks so far

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

  1. 2.9 7 km E of Cowles, Nebraska
  2. 2.8 4 km ESE of Cowles, Nebraska
  3. 2.5 6 km ESE of Cowles, Nebraska
  4. 2.4 4 km ENE of Cowles, Nebraska
  5. 2.6 8 km N of Guide Rock, Nebraska
  6. 2.6 9 km E of Cowles, Nebraska
  7. 2.3 3 km S of Cowles, Nebraska
  8. 4.1 4 km E of Cowles, Nebraska
  9. 2.6 15 km SSW of Riverton, Nebraska
  10. 2.8 7 km ENE of Cowles, Nebraska
  11. 2.5 11 km E of Cowles, Nebraska
  12. 3.5 10 km NNE of Guide Rock, Nebraska
  13. 2.8 11 km SSW of Lawrence, Nebraska
  14. 2.6 10 km E of Cowles, 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.

On USGS

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