QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

64 km ESE of Boca de Yuma, Dominican Republic

· 78 km deep · released about 3.1 tons of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 21 kmRincón Municipio 93 kmCabo Rojo Municipio 96 kmAguada Municipio 101 kmHormigueros Municipio 103 kmAñasco Municipio 104 kmAguadilla Municipio 109 kmSan Germán Municipio 111 kmLajas Municipio 111 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, 21 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1247 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 3.1 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 55,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,700× the energy of this one
  4. This earthquake M 3.5 about 3.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 6.5× 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 18.0793, -68.0888. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 21 km (13 mi) W of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 93 km (58 mi) WSW of here earthquakes near Rincón Municipio
Cabo Rojo Municipio, PR 96 km (60 mi) W of here earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 101 km (63 mi) WSW of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 103 km (64 mi) W of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 104 km (64 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. 3.3 88 km WSW of Pole Ojea, Puerto Rico
  2. 3.4 57 km SE of Boca de Yuma, Dominican Republic
  3. 3.7 36 km SSE of Boca de Yuma, Dominican Republic
  4. 3.8 29 km ESE of Boca de Yuma, Dominican Republic
  5. 3.4 54 km SE of Punta Cana, Dominican Republic
  6. 3.9 44 km ESE of Punta Cana, Dominican Republic
  7. 3.5 22 km SSE of Punta Cana, Dominican Republic
  8. 3.7 32 km SE of Boca de Yuma, Dominican Republic
  9. 3.6 50 km ESE of Boca de Yuma, Dominican Republic
  10. 3.4 62 km W of Rincón, Puerto Rico
  11. 3.3 Mona Passage
  12. 3.4 51 km W of Rincón, Puerto Rico
  13. 3.2 47 km WSW of Stella, Puerto Rico
  14. 3.2 48 km WSW of Stella, Puerto Rico
  15. 3.8 47 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 440 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.