QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

20 km SSE of Indios, Puerto Rico

· 9.0 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 21 kmGuánica Municipio 21 kmPeñuelas Municipio 24 kmPonce Municipio 27 kmYauco Municipio 31 kmLajas Municipio 33 kmSabana Grande Municipio 35 kmJuana Díaz Municipio 36 kmAdjuntas Municipio 40 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
9.0 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 21 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3508 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 340 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 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 17.8190, -66.7720. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayanilla Municipio, PR 21 km (13 mi) S of here earthquakes near Guayanilla Municipio
Guánica Municipio, PR 21 km (13 mi) SE of here earthquakes near Guánica Municipio
Peñuelas Municipio, PR 24 km (15 mi) SSW of here earthquakes near Peñuelas Municipio
Ponce Municipio, PR 27 km (17 mi) SW of here earthquakes near Ponce Municipio
Yauco Municipio, PR 31 km (19 mi) SSE of here earthquakes near Yauco Municipio
Lajas Municipio, PR 33 km (21 mi) ESE of here earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 1.8 2 km WSW of Villalba, Puerto Rico
  2. 2.4 5 km S of Adjuntas, Puerto Rico
  3. 1.6 3 km ENE of Pole Ojea, Puerto Rico
  4. 2.0 3 km SSE of Boquerón, Puerto Rico
  5. 1.9 8 km NNE of Lluveras, Puerto Rico
  6. 2.7 1 km NW of Monte Grande, Puerto Rico
  7. 2.1 1 km W of Palmarejo, Puerto Rico
  8. 1.7 6 km NNE of San Germán, Puerto Rico
  9. 2.1 10 km S of Pole Ojea, Puerto Rico
  10. 1.9 5 km ENE of La Parguera, Puerto Rico
  11. 2.3 4 km WNW of Villalba, Puerto Rico
  12. 2.4 9 km S of Pole Ojea, Puerto Rico
  13. 2.4 14 km SSW of Tallaboa, Puerto Rico
  14. 2.0 3 km NW of Villalba, Puerto Rico
  15. 2.1 7 km WSW of Guánica, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.