QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1Md

10 km S of Pole Ojea, Puerto Rico

· 4.0 km deep · released about 43 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 13 kmLajas Municipio 18 kmGuánica Municipio 28 kmHormigueros Municipio 29 kmSan Germán Municipio 29 kmSabana Grande Municipio 33 kmYauco Municipio 41 kmMaricao Municipio 42 kmGuayanilla Municipio 43 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
4.0 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 13 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3470 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 17.8803, -67.1781. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 13 km (8 mi) S of here earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 18 km (11 mi) SW of here earthquakes near Lajas Municipio
Guánica Municipio, PR 28 km (17 mi) WSW of here earthquakes near Guánica Municipio
Hormigueros Municipio, PR 29 km (18 mi) SSW of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 29 km (18 mi) SSW of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 33 km (21 mi) SW of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 2.1 18 km W of Puerto Real, Puerto Rico
  2. 2.2 26 km W of Puerto Real, Puerto Rico
  3. 1.5 1 km SW of Indios, Puerto Rico
  4. 1.7 4 km NW of Cabo Rojo, Puerto Rico
  5. 1.7 6 km W of La Parguera, Puerto Rico
  6. 2.0 2 km NNE of Sabana Eneas, Puerto Rico
  7. 2.0 23 km SW of Stella, Puerto Rico
  8. 1.8 25 km W of Puerto Real, Puerto Rico
  9. 2.3 11 km SSE of Guánica, Puerto Rico
  10. 2.1 3 km N of Monte Grande, Puerto Rico
  11. 2.0 33 km S of Pole Ojea, Puerto Rico
  12. 2.4 1 km W of Palmarejo, Puerto Rico
  13. 1.6 9 km S of La Parguera, Puerto Rico
  14. 1.9 4 km NNW of Puerto Real, Puerto Rico
  15. 2.7 1 km ENE of Mayagüez, 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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