QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

1 km E of Cabo Rojo, Puerto Rico

· 20 km deep · released about 350 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 5 kmSan Germán Municipio 10 kmCabo Rojo Municipio 11 kmLajas Municipio 15 kmSabana Grande Municipio 19 kmLas Marías Municipio 22 kmAñasco Municipio 22 kmMaricao Municipio 22 kmGuánica Municipio 27 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
Hormigueros Municipio, 5 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1558 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 18.0868, -67.1270. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 5 km (3 mi) SSW of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 10 km (6 mi) WSW of here earthquakes near San Germán Municipio
Cabo Rojo Municipio, PR 11 km (7 mi) NNE of here earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 15 km (9 mi) NW of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 19 km (12 mi) W of here earthquakes near Sabana Grande Municipio
Las Marías Municipio, PR 22 km (14 mi) SW of here earthquakes near Las Marías Municipio

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

Aftershocks so far

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

  1. 2.5 1 km WSW of Guánica, Puerto Rico
  2. 1.9 3 km ENE of La Parguera, Puerto Rico
  3. 1.7 6 km ESE of La Parguera, Puerto Rico
  4. 2.6 4 km ESE of La Parguera, Puerto Rico
  5. 2.3 5 km SE of Maria Antonia, Puerto Rico
  6. 2.2 Puerto Rico region
  7. 2.4 6 km SW of Guánica, Puerto Rico
  8. 1.9 Puerto Rico region
  9. 2.1 4 km SSW of Indios, Puerto Rico
  10. 2.5 5 km SSW of Indios, Puerto Rico
  11. 3.3 5 km SSW of Indios, Puerto Rico
  12. 2.1 5 km SSW of Indios, Puerto Rico
  13. 4.1 5 km SSW of Indios, Puerto Rico
  14. 2.0 Puerto Rico region
  15. 2.2 4 km SSW of Indios, 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 6.4 on 2020-01-07 — it released about 340,000 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.