QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

63 km SE of Punta Cana, Dominican Republic

· 94 km deep · released about 2.1 tons of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 14 kmRincón Municipio 80 kmCabo Rojo Municipio 87 kmAguada Municipio 88 kmAñasco Municipio 92 kmHormigueros Municipio 92 kmAguadilla Municipio 96 kmMoca Municipio 99 kmSan Germán Municipio 101 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
94 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 14 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1327 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 18.1610, -67.9890. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 14 km (9 mi) NW of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 80 km (50 mi) WSW of here earthquakes near Rincón Municipio
Cabo Rojo Municipio, PR 87 km (54 mi) WNW of here earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 88 km (55 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 92 km (57 mi) W of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 92 km (57 mi) W of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 3.7 32 km SE of Boca de Yuma, Dominican Republic
  2. 3.6 50 km ESE of Boca de Yuma, Dominican Republic
  3. 3.4 62 km W of Rincón, Puerto Rico
  4. 3.3 Mona Passage
  5. 3.4 51 km W of Rincón, Puerto Rico
  6. 3.2 47 km WSW of Stella, Puerto Rico
  7. 3.2 48 km WSW of Stella, Puerto Rico
  8. 3.8 47 km ESE of Boca de Yuma, Dominican Republic
  9. 2.9 44 km WSW of Stella, Puerto Rico
  10. 3.2 58 km W of Puerto Real, Puerto Rico
  11. 3.5 45 km WSW of Stella, Puerto Rico
  12. 4.0 59 km SE of Boca de Yuma, Dominican Republic
  13. 3.2 80 km SE of Boca de Yuma, Dominican Republic
  14. 3.4 47 km SSE of Boca de Yuma, Dominican Republic
  15. 3.4 56 km W of Pole Ojea, Puerto Rico

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 4.8 on 2020-03-06 — it released about 110 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.