QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

21 km SE of Punta Cana, Dominican Republic

· 99 km deep · released about 1,600 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mayagüez Municipio 57 kmRincón Municipio 106 kmAguada Municipio 112 kmAguadilla Municipio 116 kmAñasco Municipio 119 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 3.1 (md)
Depth
99 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 57 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2922 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 1,600 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 210,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,700× the energy of this one
  4. This earthquake M 3.1 about 1,600 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× more

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 18.4625, -68.2481. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 57 km (35 mi) NW of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 106 km (66 mi) W of here earthquakes near Rincón Municipio
Aguada Municipio, PR 112 km (70 mi) W of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 116 km (72 mi) W of here earthquakes near Aguadilla Municipio
Añasco Municipio, PR 119 km (74 mi) W of here earthquakes near Añasco Municipio
Cabo Rojo Municipio, PR 124 km (77 mi) WNW of here earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 3.1 31 km NE of Punta Cana, Dominican Republic
  2. 3.3 33 km NNW of Boca de Yuma, Dominican Republic
  3. 3.0 66 km SE of Punta Cana, Dominican Republic
  4. 3.0 13 km SSW of Boca de Yuma, Dominican Republic
  5. 3.0 65 km SE of Punta Cana, Dominican Republic
  6. 2.9 28 km NE of Otra Banda, Dominican Republic
  7. 3.2 32 km N of Punta Cana, Dominican Republic
  8. 2.8 61 km SE of Punta Cana, Dominican Republic
  9. 3.4 55 km SSE of Punta Cana, Dominican Republic
  10. 3.3 62 km W of Rincón, Puerto Rico
  11. 2.7 51 km ENE of Punta Cana, Dominican Republic
  12. 2.9 47 km ESE of Boca de Yuma, Dominican Republic
  13. 3.4 14 km SSE of Boca de Yuma, Dominican Republic
  14. 3.1 47 km SE of Boca de Yuma, Dominican Republic
  15. 3.2 Mona Passage

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 4.3 on 2017-06-22 — it released about 57 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.