QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

44 km W of Pole Ojea, Puerto Rico

· 82 km deep · released about 360 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 33 kmCabo Rojo Municipio 45 kmHormigueros Municipio 55 kmRincón Municipio 55 kmLajas Municipio 59 kmAñasco Municipio 61 kmSan Germán Municipio 62 kmAguada Municipio 63 kmSabana Grande Municipio 70 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
82 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 33 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2534 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 360 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 42,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 30,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.6× the energy of this one
  4. This earthquake M 2.7 about 360 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 17.9695, -67.6021. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 33 km (20 mi) ESE of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 45 km (28 mi) W of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 55 km (34 mi) WSW of here earthquakes near Hormigueros Municipio
Rincón Municipio, PR 55 km (34 mi) SW of here earthquakes near Rincón Municipio
Lajas Municipio, PR 59 km (37 mi) W of here earthquakes near Lajas Municipio
Añasco Municipio, PR 61 km (38 mi) SW of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 3.0 33 km WSW of Stella, Puerto Rico
  2. 2.5 23 km W of Pole Ojea, Puerto Rico
  3. 2.1 10 km W of Rincón, Puerto Rico
  4. 1.9 2 km W of Puerto Real, Puerto Rico
  5. 2.1 7 km SW of La Playa, Puerto Rico
  6. 3.0 46 km WSW of Stella, Puerto Rico
  7. 2.6 18 km W of Rincón, Puerto Rico
  8. 2.5 7 km NNW of Puerto Real, Puerto Rico
  9. 2.0 7 km NW of Puerto Real, Puerto Rico
  10. 1.9 21 km WNW of Puerto Real, Puerto Rico
  11. 2.5 23 km SW of Stella, Puerto Rico
  12. 2.3 30 km W of Rincón, Puerto Rico
  13. 1.8 4 km NW of Cabo Rojo, Puerto Rico
  14. 2.5 4 km NW of Puerto Real, Puerto Rico
  15. 1.9 15 km W of Puerto Real, 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 230 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.