QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1Md

Puerto Rico region

· 17 km deep · released about 43 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 34 kmGuánica Municipio 34 kmCabo Rojo Municipio 38 kmGuayanilla Municipio 46 kmSabana Grande Municipio 47 kmSan Germán Municipio 48 kmYauco Municipio 51 kmHormigueros Municipio 51 kmPeñuelas Municipio 53 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
17 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 34 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3770 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 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 17.6760, -67.0664. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 34 km (21 mi) S of here earthquakes near Lajas Municipio
Guánica Municipio, PR 34 km (21 mi) SSW of here earthquakes near Guánica Municipio
Cabo Rojo Municipio, PR 38 km (23 mi) SSE of here earthquakes near Cabo Rojo Municipio
Guayanilla Municipio, PR 46 km (29 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 47 km (29 mi) SSW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 48 km (30 mi) S of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 1.7 4 km WSW of La Parguera, Puerto Rico
  2. 1.7 2 km NW of Lluveras, Puerto Rico
  3. 1.9 4 km NE of Lluveras, Puerto Rico
  4. 2.0 1 km SSW of Boquerón, Puerto Rico
  5. 2.3 0 km SW of La Parguera, Puerto Rico
  6. 3.0 74 km S of Guánica, Puerto Rico
  7. 2.0 17 km S of Guánica, Puerto Rico
  8. 1.7 4 km W of La Parguera, Puerto Rico
  9. 1.6 2 km WSW of Lluveras, Puerto Rico
  10. 1.7 2 km NE of San Germán, Puerto Rico
  11. 2.2 48 km S of Pole Ojea, Puerto Rico
  12. 2.1 18 km S of Tallaboa, Puerto Rico
  13. 1.6 6 km SW of Liborio Negron Torres, Puerto Rico
  14. 2.2 10 km S of Guánica, Puerto Rico
  15. 1.6 3 km NNW of Sabana Grande, 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.