QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

70 km SE of Boca de Yuma, Dominican Republic

· 67 km deep · released about 2.1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mayagüez Municipio 23 kmCabo Rojo Municipio 95 kmRincón Municipio 96 kmHormigueros Municipio 103 kmAguada Municipio 104 kmAñasco Municipio 105 kmLajas Municipio 110 kmSan Germán Municipio 111 kmAguadilla Municipio 113 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 3.4 (md)
Depth
67 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 23 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 797 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 2.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 80,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,500× the energy of this one
  4. This earthquake M 3.4 about 2.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.4× 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 17.9965, -68.0812. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 23 km (14 mi) WSW of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 95 km (59 mi) W of here earthquakes near Cabo Rojo Municipio
Rincón Municipio, PR 96 km (59 mi) WSW of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 103 km (64 mi) W of here earthquakes near Hormigueros Municipio
Aguada Municipio, PR 104 km (64 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 105 km (66 mi) WSW of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 3.4 47 km SE of Punta Cana, Dominican Republic
  2. 3.4 83 km W of Pole Ojea, Puerto Rico
  3. 3.8 67 km SE of Punta Cana, Dominican Republic
  4. 4.1 39 km ESE of Boca de Yuma, Dominican Republic
  5. 3.6 37 km SSE of Boca de Yuma, Dominican Republic
  6. 3.8 25 km SSE of Boca de Yuma, Dominican Republic
  7. 3.7 49 km ESE of Punta Cana, Dominican Republic
  8. 3.8 43 km ESE of Punta Cana, Dominican Republic
  9. 3.5 37 km SSE of Boca de Yuma, Dominican Republic
  10. 3.4 74 km SE of Boca de Yuma, Dominican Republic
  11. 3.6 36 km SE of Boca de Yuma, Dominican Republic
  12. 3.0 48 km WSW of Stella, Puerto Rico
  13. 3.8 27 km SE of Boca de Yuma, Dominican Republic
  14. 3.5 69 km SE of Boca de Yuma, Dominican Republic
  15. 3.4 54 km S of Boca de Yuma, Dominican Republic

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 5.0 on 2021-06-14 — it released about 230 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.