QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

20 km S of La Parguera, Puerto Rico

· 21 km deep · released about 43 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 20 kmLajas Municipio 21 kmCabo Rojo Municipio 29 kmGuayanilla Municipio 33 kmSabana Grande Municipio 34 kmSan Germán Municipio 36 kmYauco Municipio 37 kmHormigueros Municipio 40 kmPeñuelas 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 2.1 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 20 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3160 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 17.7890, -67.0170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 20 km (13 mi) SSW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 21 km (13 mi) S of here earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 29 km (18 mi) SE of here earthquakes near Cabo Rojo Municipio
Guayanilla Municipio, PR 33 km (21 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 34 km (21 mi) SSW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 36 km (22 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

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

  1. 2.1 5 km WSW of La Parguera, Puerto Rico
  2. 2.4 12 km WSW of Mayagüez, Puerto Rico
  3. 2.2 23 km S of Ponce, Puerto Rico
  4. 1.9 1 km WNW of Palmarejo, Puerto Rico
  5. 2.2 4 km NW of Maricao, Puerto Rico
  6. 1.7 3 km E of Sabana Grande, Puerto Rico
  7. 2.1 16 km SSE of Pole Ojea, Puerto Rico
  8. 2.2 25 km SSE of Maria Antonia, Puerto Rico
  9. 1.9 9 km NNE of Yauco, Puerto Rico
  10. 2.0 6 km E of La Parguera, Puerto Rico
  11. 2.5 1 km WSW of Liborio Negron Torres, Puerto Rico
  12. 2.1 16 km SSW of La Parguera, Puerto Rico
  13. 2.3 3 km SW of La Parguera, Puerto Rico
  14. 1.7 10 km SSW of Pole Ojea, Puerto Rico
  15. 2.4 13 km SSW 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

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