QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

2 km SW of Maricao, Puerto Rico

· 24 km deep · released about 41 lb of TNT

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10 km30 km60 km120 km N Maricao Municipio 6 kmLas Marías Municipio 7 kmSan Germán Municipio 8 kmSabana Grande Municipio 10 kmHormigueros Municipio 13 kmYauco Municipio 17 kmLares Municipio 18 kmSan Sebastián Municipio 19 kmAñasco Municipio 20 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
24 km below the surface
Felt
no reports yet
Nearest
Maricao Municipio, 6 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2592 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 41 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 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 18.1650, -66.9946. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maricao Municipio, PR 6 km (4 mi) W of here earthquakes near Maricao Municipio
Las Marías Municipio, PR 7 km (4 mi) SSW of here earthquakes near Las Marías Municipio
San Germán Municipio, PR 8 km (5 mi) NE of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 10 km (6 mi) NNW of here earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 13 km (8 mi) ENE of here earthquakes near Hormigueros Municipio
Yauco Municipio, PR 17 km (11 mi) WNW of here earthquakes near Yauco 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. 2.6 1 km NNW of Moca, Puerto Rico
  2. 1.6 5 km W of Pole Ojea, Puerto Rico
  3. 1.9 0 km WNW of Lajas, Puerto Rico
  4. 2.2 17 km WNW of Puerto Real, Puerto Rico
  5. 1.9 1 km NNE of Lluveras, Puerto Rico
  6. 2.2 18 km NW of Puerto Real, Puerto Rico
  7. 2.1 11 km WSW of Pole Ojea, Puerto Rico
  8. 1.8 10 km SSW of Guánica, Puerto Rico
  9. 2.0 4 km ENE of Mayagüez, Puerto Rico
  10. 2.6 5 km SSW of Indios, Puerto Rico
  11. 2.1 15 km S of La Parguera, Puerto Rico
  12. 1.8 4 km N of Sabana Grande, Puerto Rico
  13. 2.7 23 km W of Puerto Real, Puerto Rico
  14. 1.8 2 km NNW of La Parguera, Puerto Rico
  15. 2.0 18 km WNW of Puerto Real, 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.