QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

1 km W of G. L. Garcia, Puerto Rico

· 27 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cayey Municipio 4 kmCidra Municipio 7 kmCaguas Municipio 12 kmAguas Buenas Municipio 15 kmAibonito Municipio 15 kmComerío Municipio 15 kmSan Lorenzo Municipio 16 kmGuayama Municipio 17 kmArroyo Municipio 19 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
27 km below the surface
Felt
no reports yet
Nearest
Cayey Municipio, 4 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 916 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 320 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 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 18.1252, -66.1223. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cayey Municipio, PR 4 km (2 mi) NE of here earthquakes near Cayey Municipio
Cidra Municipio, PR 7 km (4 mi) SE of here earthquakes near Cidra Municipio
Caguas Municipio, PR 12 km (8 mi) SW of here earthquakes near Caguas Municipio
Aguas Buenas Municipio, PR 15 km (9 mi) S of here earthquakes near Aguas Buenas Municipio
Aibonito Municipio, PR 15 km (9 mi) E of here earthquakes near Aibonito Municipio
Comerío Municipio, PR 15 km (9 mi) SE of here earthquakes near Comerío Municipio

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

Aftershocks so far

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

  1. 2.2 2 km NNW of Orocovis, Puerto Rico
  2. 2.5 5 km SE of El Negro, Puerto Rico
  3. 3.0 2 km E of Vega Alta, Puerto Rico
  4. 1.6 2 km W of Mariano Colón, Puerto Rico
  5. 2.0 3 km NW of Orocovis, Puerto Rico
  6. 3.1 3 km NE of Martorell, Puerto Rico
  7. 2.3 0 km W of Santa Isabel, Puerto Rico
  8. 3.2 21 km SSE of Lamboglia, Puerto Rico
  9. 2.3 4 km S of Salinas, Puerto Rico
  10. 2.5 1 km SW of El Ojo, Puerto Rico
  11. 2.1 3 km E of Pastos, Puerto Rico
  12. 2.8 1 km ESE of Gurabo, Puerto Rico
  13. 2.3 5 km WSW of Central Aguirre, Puerto Rico
  14. 2.6 3 km WNW of Orocovis, Puerto Rico
  15. 1.9 4 km SSW of Comerío, 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 4.6 on 2016-12-05 — it released about 760 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.