QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

0 km SE of Guayanilla, Puerto Rico

· 16 km deep · released about 290 lb of TNT

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10 km30 km60 km120 km N Guayanilla Municipio 1 kmPeñuelas Municipio 6 kmYauco Municipio 11 kmGuánica Municipio 16 kmSabana Grande Municipio 19 kmAdjuntas Municipio 19 kmPonce Municipio 19 kmMaricao Municipio 24 kmLajas 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
16 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 1 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1119 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 290 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 51,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 36,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.2× the energy of this one
  4. This earthquake M 2.7 about 290 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 18.0133, -66.7872. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayanilla Municipio, PR 1 km (1 mi) NE of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 6 km (4 mi) WSW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 11 km (7 mi) SE of here earthquakes near Yauco Municipio
Guánica Municipio, PR 16 km (10 mi) ENE of here earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 19 km (12 mi) ESE of here earthquakes near Sabana Grande Municipio
Adjuntas Municipio, PR 19 km (12 mi) S of here earthquakes near Adjuntas Municipio

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

Aftershocks so far

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

  1. 2.8 7 km SSE of Maria Antonia, Puerto Rico
  2. 2.9 8 km SSE of Maria Antonia, Puerto Rico
  3. 2.5 10 km NW of Santo Domingo, Puerto Rico
  4. 2.8 1 km WSW of Indios, Puerto Rico
  5. 2.1 18 km SSW of Guánica, Puerto Rico
  6. 3.2 Puerto Rico region
  7. 2.8 Puerto Rico region
  8. 3.4 6 km WSW of Guánica, Puerto Rico
  9. 2.6 3 km WSW of Indios, Puerto Rico
  10. 2.4 6 km NNE of Lluveras, Puerto Rico
  11. 2.4 13 km SSE of Guánica, Puerto Rico
  12. 2.6 9 km SSE of Guánica, Puerto Rico
  13. 2.3 4 km NNE of Lluveras, Puerto Rico
  14. 2.7 8 km SSE of Guánica, Puerto Rico
  15. 3.0 12 km SSE of Tallaboa, 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 410,000 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.