QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

13 km SSW of Guánica, Puerto Rico

· 5.0 km deep · released about 37 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 11 kmLajas Municipio 16 kmGuayanilla Municipio 24 kmSabana Grande Municipio 25 kmYauco Municipio 28 kmCabo Rojo Municipio 28 kmSan Germán Municipio 29 kmPeñuelas Municipio 31 kmHormigueros Municipio 35 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 2.1 (md)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 11 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2819 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 37 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 17.8573, -66.9628. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 11 km (7 mi) SSW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 16 km (10 mi) SSE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 24 km (15 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 25 km (16 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 28 km (17 mi) SSW of here earthquakes near Yauco Municipio
Cabo Rojo Municipio, PR 28 km (17 mi) SE of here earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 1.9 0 km WNW of Fuig, Puerto Rico
  2. 1.6 2 km SE of Lajas, Puerto Rico
  3. 1.6 3 km WSW of Guánica, Puerto Rico
  4. 1.9 1 km W of Fuig, Puerto Rico
  5. 1.6 2 km ESE of La Parguera, Puerto Rico
  6. 1.9 4 km NNE of Sabana Eneas, Puerto Rico
  7. 1.6 20 km SSE of Tallaboa, Puerto Rico
  8. 2.8 19 km W of Puerto Real, Puerto Rico
  9. 2.5 1 km NW of Lajas, Puerto Rico
  10. 2.0 2 km WSW of Tallaboa, Puerto Rico
  11. 2.1 12 km NW of Puerto Real, Puerto Rico
  12. 2.0 3 km SSW of Guánica, Puerto Rico
  13. 2.0 11 km SSE of Guánica, Puerto Rico
  14. 1.8 13 km SSW of Guánica, Puerto Rico
  15. 2.0 8 km WSW of Adjuntas, 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.