QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1Md

2 km NNE of La Parguera, Puerto Rico

· 14 km deep · released about 43 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 2 kmSan Germán Municipio 13 kmGuánica Municipio 13 kmSabana Grande Municipio 14 kmCabo Rojo Municipio 15 kmHormigueros Municipio 18 kmYauco Municipio 22 kmMaricao Municipio 23 kmGuayanilla Municipio 25 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
14 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 2 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3606 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 17.9937, -67.0391. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 2 km (1 mi) N of here earthquakes near Lajas Municipio
San Germán Municipio, PR 13 km (8 mi) S of here earthquakes near San Germán Municipio
Guánica Municipio, PR 13 km (8 mi) WNW of here earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 14 km (9 mi) SW of here earthquakes near Sabana Grande Municipio
Cabo Rojo Municipio, PR 15 km (9 mi) E of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 18 km (11 mi) SSE of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 1.7 1 km NNE of Puerto Real, Puerto Rico
  2. 2.3 9 km S of Pole Ojea, Puerto Rico
  3. 1.6 7 km WSW of La Parguera, Puerto Rico
  4. 2.1 1 km SE of San Germán, Puerto Rico
  5. 2.5 15 km SSW of Stella, Puerto Rico
  6. 2.4 7 km WSW of La Parguera, Puerto Rico
  7. 2.7 18 km SSE of Tallaboa, Puerto Rico
  8. 1.9 8 km WSW of La Parguera, Puerto Rico
  9. 2.4 7 km WSW of La Parguera, Puerto Rico
  10. 2.6 5 km WNW of La Parguera, Puerto Rico
  11. 2.6 5 km WSW of La Parguera, Puerto Rico
  12. 2.4 8 km SSE of La Parguera, Puerto Rico
  13. 2.3 20 km S of La Parguera, Puerto Rico
  14. 2.3 13 km SSW of Guánica, Puerto Rico
  15. 2.4 1 km W of San Germán, 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.