QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

49 km SSE of Punta Cana, Dominican Republic

· 78 km deep · released about 2.7 tons of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 32 kmRincón Municipio 98 kmAguada Municipio 105 kmCabo Rojo Municipio 106 kmAñasco Municipio 110 kmHormigueros Municipio 111 kmAguadilla Municipio 112 kmMoca Municipio 116 kmSan Germán Municipio 120 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 3.5 (md)
Depth
78 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 32 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1767 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 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 63,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,000× the energy of this one
  4. This earthquake M 3.5 about 2.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.6× 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 18.1978, -68.1653. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 32 km (20 mi) WNW of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 98 km (61 mi) W of here earthquakes near Rincón Municipio
Aguada Municipio, PR 105 km (65 mi) W of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 106 km (66 mi) WNW of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 110 km (68 mi) W of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 111 km (69 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

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

  1. 3.2 58 km WSW of Stella, Puerto Rico
  2. 4.3 43 km SE of Punta Cana, Dominican Republic
  3. 3.8 76 km SE of Punta Cana, Dominican Republic
  4. 3.7 51 km ESE of Boca de Yuma, Dominican Republic
  5. 3.6 Dominican Republic region
  6. 3.4 51 km SE of Punta Cana, Dominican Republic
  7. 3.6 5 km ENE of Punta Cana, Dominican Republic
  8. 3.9 8 km SSE of Boca de Yuma, Dominican Republic
  9. 3.3 64 km SE of Boca de Yuma, Dominican Republic
  10. 3.4 52 km ESE of Punta Cana, Dominican Republic
  11. 3.7 53 km SE of Punta Cana, Dominican Republic
  12. 3.2 48 km SE of Punta Cana, Dominican Republic
  13. 2.8 59 km WSW of Stella, Puerto Rico
  14. 3.6 21 km SE of Punta Cana, Dominican Republic
  15. 3.8 26 km ESE 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 5.3 on 2019-02-04 — it released about 500 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.