QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

20 km SSW of Pole Ojea, Puerto Rico

· 18 km deep · released about 37 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 23 kmLajas Municipio 31 kmGuánica Municipio 40 kmHormigueros Municipio 40 kmSan Germán Municipio 41 kmSabana Grande Municipio 46 kmYauco Municipio 53 kmMaricao Municipio 54 kmGuayanilla Municipio 54 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
18 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 23 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2657 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 17.8086, -67.2665. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 23 km (14 mi) SSW of here earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 31 km (19 mi) SW of here earthquakes near Lajas Municipio
Guánica Municipio, PR 40 km (25 mi) WSW of here earthquakes near Guánica Municipio
Hormigueros Municipio, PR 40 km (25 mi) SSW of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 41 km (26 mi) SW of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 46 km (28 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

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

  1. 2.7 14 km SW of La Playa, Puerto Rico
  2. 1.6 5 km ENE of Sabana Grande, Puerto Rico
  3. 2.5 26 km WSW of Stella, Puerto Rico
  4. 1.7 4 km WSW of Liborio Negron Torres, Puerto Rico
  5. 2.0 43 km S of Pole Ojea, Puerto Rico
  6. 2.0 6 km NNE of Sabana Eneas, Puerto Rico
  7. 1.5 22 km W of Pole Ojea, Puerto Rico
  8. 2.1 2 km E of Mayagüez, Puerto Rico
  9. 1.7 5 km NNE of Sabana Grande, Puerto Rico
  10. 1.6 5 km NNE of Sabana Grande, Puerto Rico
  11. 2.4 5 km NNE of Sabana Grande, Puerto Rico
  12. 2.0 8 km W of Maricao, Puerto Rico
  13. 2.0 8 km WSW of Guánica, Puerto Rico
  14. 1.9 41 km WSW of Pole Ojea, Puerto Rico
  15. 1.5 5 km SE of Boquerón, 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.