QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

36 km WSW of Stella, Puerto Rico

· 4.0 km deep · released about 330 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 36 kmRincón Municipio 37 kmAguada Municipio 45 kmCabo Rojo Municipio 46 kmAñasco Municipio 47 kmHormigueros Municipio 48 kmAguadilla Municipio 55 kmMoca Municipio 56 kmSan Germán Municipio 57 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
4.0 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 36 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1846 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 330 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 46,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 33,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.9× the energy of this one
  4. This earthquake M 2.7 about 330 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 18.1855, -67.5658. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 36 km (22 mi) ENE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 37 km (23 mi) WSW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 45 km (28 mi) WSW of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 46 km (28 mi) WNW of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 47 km (29 mi) WSW of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 48 km (30 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

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

  1. 2.1 1 km NNE of Boquerón, Puerto Rico
  2. 2.0 1 km NNW of Cabo Rojo, Puerto Rico
  3. 2.3 17 km SW of Stella, Puerto Rico
  4. 2.3 1 km NNW of Boquerón, Puerto Rico
  5. 2.5 22 km W of Pole Ojea, Puerto Rico
  6. 1.5 3 km SSW of Pole Ojea, Puerto Rico
  7. 2.2 29 km W of Stella, Puerto Rico
  8. 2.5 18 km WNW of Puerto Real, Puerto Rico
  9. 3.0 54 km W of Rincón, Puerto Rico
  10. 3.9 40 km WNW of Rincón, Puerto Rico
  11. 2.9 24 km W of Puerto Real, Puerto Rico
  12. 2.9 18 km NW of Rincón, Puerto Rico
  13. 2.2 8 km WSW of Mayagüez, Puerto Rico
  14. 3.0 9 km SW of La Playa, 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 4.4 on 2017-10-01 — it released about 370 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.