QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

11 km W of Mayagüez, Puerto Rico

· 29 km deep · released about 390 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 16 kmHormigueros Municipio 16 kmAñasco Municipio 16 kmAguada Municipio 21 kmCabo Rojo Municipio 23 kmSan Germán Municipio 25 kmMoca Municipio 27 kmLas Marías Municipio 29 kmLajas Municipio 33 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
29 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 16 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2868 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 390 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 39,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 28,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 390 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 18.1975, -67.2513. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 16 km (10 mi) S of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 16 km (10 mi) WNW of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 16 km (10 mi) SW of here earthquakes near Añasco Municipio
Aguada Municipio, PR 21 km (13 mi) SSW of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 23 km (15 mi) NNW of here earthquakes near Cabo Rojo Municipio
San Germán Municipio, PR 25 km (15 mi) WNW of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.1 6 km ENE of Espino, Puerto Rico
  2. 2.3 16 km WSW of Stella, Puerto Rico
  3. 1.6 3 km SSE of Mayagüez, Puerto Rico
  4. 2.5 2 km NW of Mayagüez, Puerto Rico
  5. 1.9 4 km WSW of Maricao, Puerto Rico
  6. 2.0 7 km WSW of Maricao, Puerto Rico
  7. 2.3 17 km W of Pole Ojea, Puerto Rico
  8. 2.8 3 km W of Mayagüez, Puerto Rico
  9. 2.3 36 km W of Rincón, Puerto Rico
  10. 2.0 17 km S of Pole Ojea, Puerto Rico
  11. 1.8 10 km SSE of La Parguera, Puerto Rico
  12. 2.5 6 km WSW of Stella, Puerto Rico
  13. 2.1 1 km NNW of Sabana Grande, Puerto Rico
  14. 2.0 0 km W of Sabana Grande, Puerto Rico
  15. 2.3 1 km SW of Espino, 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 2017-10-14 — it released about 220 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.