QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4Md

71 km SE of Punta Cana, Dominican Republic

· 166 km deep · released about 1.9 tons of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 7 kmRincón Municipio 74 kmCabo Rojo Municipio 80 kmAguada Municipio 82 kmHormigueros Municipio 85 kmAñasco Municipio 85 kmAguadilla Municipio 91 kmMoca Municipio 93 kmSan Germán Municipio 93 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
166 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Mayagüez Municipio, 7 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1.9 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 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 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 18.1331, -67.9196. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 7 km (4 mi) NNW of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 74 km (46 mi) WSW of here earthquakes near Rincón Municipio
Cabo Rojo Municipio, PR 80 km (49 mi) W of here earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 82 km (51 mi) WSW of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 85 km (53 mi) W of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 85 km (53 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

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

  1. 2.3 44 km WSW of Stella, Puerto Rico
  2. 2.0 Mona Passage
  3. 2.1 36 km W of Rincón, Puerto Rico
  4. 3.2 Mona Passage
  5. 2.9 58 km W of Pole Ojea, Puerto Rico
  6. 3.7 56 km SE of Punta Cana, Dominican Republic
  7. 2.9 34 km WSW of Stella, Puerto Rico
  8. 2.8 42 km W of Rincón, Puerto Rico
  9. 2.3 45 km WSW of Stella, Puerto Rico
  10. 2.4 44 km W of Rincón, Puerto Rico
  11. 2.8 41 km WNW of Rincón, Puerto Rico
  12. 2.7 42 km W of Rincón, Puerto Rico
  13. 3.5 70 km WSW of Stella, Puerto Rico
  14. 3.4 75 km SE of Boca de Yuma, Dominican Republic
  15. 3.4 51 km SE of Punta Cana, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.