QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4mb_lg

9 km N of Guerrero, Mexico

· 5.0 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Maverick County 38 kmDimmit County 62 kmZavala County 81 kmKinney County 106 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
no reports yet
Nearest
Maverick County, 38 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 457 days ago

A magnitude 2.4 earthquake was recorded 9 km N of Guerrero, Mexico at 16:37 UTC on 2021-04-27. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Rosita South, Rosita North.

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 28.3975, -100.3974. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Maverick County, TX 38 km (23 mi) NNE earthquakes near Maverick County
Dimmit County, TX 62 km (38 mi) E earthquakes near Dimmit County
Zavala County, TX 81 km (50 mi) NE earthquakes near Zavala County
Kinney County, TX 106 km (66 mi) N earthquakes near Kinney County
Uvalde County, TX 122 km (76 mi) NNE earthquakes near Uvalde County
Webb County, TX 126 km (78 mi) SE earthquakes near Webb County

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

Aftershocks so far

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

  1. 2.7 17 km NE of El Indio, Texas
  2. 2.2 21 km W of Carrizo Springs, Texas
  3. 2.0 17 km E of El Indio, Texas
  4. 3.6 18 km E of El Indio, Texas
  5. 2.3 28 km SW of Asherton, Texas
  6. 2.2 15 km ENE of El Indio, Texas
  7. 2.5 19 km E of El Indio, Texas
  8. 2.5 19 km E of El Indio, Texas
  9. 2.6 16 km ENE of El Indio, Texas
  10. 2.2 18 km E of El Indio, Texas
  11. 2.7 7 km ESE of El Indio, Texas
  12. 3.4 3 km S of El Indio, Texas
  13. 2.3 4 km SSE of El Indio, Texas
  14. 2.9 11 km NNE of Guerrero, Mexico
  15. 3.1 3 km SSE of El Indio, Texas

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.