QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

55 km W of Pole Ojea, Puerto Rico

· 22 km deep · released about 330 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 28 kmCabo Rojo Municipio 57 kmHormigueros Municipio 68 kmRincón Municipio 69 kmLajas Municipio 71 kmSan Germán Municipio 75 kmAñasco Municipio 75 kmAguada Municipio 77 kmSabana Grande Municipio 83 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
22 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 28 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2778 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 17.8951, -67.7070. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 28 km (18 mi) SE of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 57 km (35 mi) WSW of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 68 km (42 mi) WSW of here earthquakes near Hormigueros Municipio
Rincón Municipio, PR 69 km (43 mi) SW of here earthquakes near Rincón Municipio
Lajas Municipio, PR 71 km (44 mi) W of here earthquakes near Lajas Municipio
San Germán Municipio, PR 75 km (46 mi) WSW 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

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

  1. 2.7 67 km W of Puerto Real, Puerto Rico
  2. 2.8 73 km SW of Pole Ojea, Puerto Rico
  3. 3.1 Puerto Rico region
  4. 2.6 16 km W of Puerto Real, Puerto Rico
  5. 2.5 22 km SW of Stella, Puerto Rico
  6. 2.6 47 km WSW of Stella, Puerto Rico
  7. 3.1 57 km WSW of Stella, Puerto Rico
  8. 2.1 21 km SW of Stella, Puerto Rico
  9. 2.7 54 km W of Rincón, Puerto Rico
  10. 2.6 42 km WSW of Stella, Puerto Rico
  11. 3.0 41 km W of Rincón, Puerto Rico
  12. 2.8 27 km SW of Stella, Puerto Rico
  13. 2.8 47 km WSW of Stella, Puerto Rico
  14. 3.0 53 km W of Stella, Puerto Rico
  15. 2.0 20 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 2017-07-18 — it released about 260 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.