QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

35 km W of Puerto Real, Puerto Rico

· 20 km deep · released about 350 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 37 kmMayagüez Municipio 39 kmRincón Municipio 41 kmHormigueros Municipio 43 kmAñasco Municipio 48 kmAguada Municipio 49 kmSan Germán Municipio 51 kmLajas Municipio 52 kmMoca Municipio 58 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 2.7 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 37 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2037 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 350 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 43,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 31,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.7× the energy of this one
  4. This earthquake M 2.7 about 350 lb of TNT

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 18.0670, -67.5198. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 37 km (23 mi) WNW of here earthquakes near Cabo Rojo Municipio
Mayagüez Municipio, PR 39 km (24 mi) E of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 41 km (26 mi) SW of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 43 km (27 mi) W of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 48 km (30 mi) WSW of here earthquakes near Añasco Municipio
Aguada Municipio, PR 49 km (31 mi) SW of here earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 1.8 4 km SSW of Palmarejo, Puerto Rico
  2. 2.5 16 km NW of Puerto Real, Puerto Rico
  3. 2.5 3 km NNW of La Parguera, Puerto Rico
  4. 3.2 38 km W of Rincón, Puerto Rico
  5. 1.9 4 km SW of La Parguera, Puerto Rico
  6. 2.6 13 km W of Pole Ojea, Puerto Rico
  7. 2.8 31 km WSW of Stella, Puerto Rico
  8. 2.3 11 km WSW of Puerto Real, Puerto Rico
  9. 2.9 4 km S of Pole Ojea, Puerto Rico
  10. 2.2 2 km NW of La Parguera, Puerto Rico
  11. 2.0 3 km NNW of La Parguera, Puerto Rico
  12. 3.0 6 km SSE of Pole Ojea, Puerto Rico
  13. 3.1 6 km SSE of Pole Ojea, Puerto Rico
  14. 3.2 6 km SSE of Pole Ojea, Puerto Rico
  15. 2.8 3 km SE 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 4.3 on 2019-09-05 — it released about 240 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.