QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

19 km S of Tallaboa, Puerto Rico

· 10 km deep · released about 49 lb of TNT

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10 km30 km60 km120 km N Guayanilla Municipio 21 kmPeñuelas Municipio 23 kmPonce Municipio 24 kmGuánica Municipio 24 kmYauco Municipio 32 kmJuana Díaz Municipio 32 kmLajas Municipio 36 kmSabana Grande Municipio 37 kmSanta Isabel 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
10 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 21 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2908 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 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 17.8236, -66.7365. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayanilla Municipio, PR 21 km (13 mi) SSE of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 23 km (14 mi) S of here earthquakes near Peñuelas Municipio
Ponce Municipio, PR 24 km (15 mi) SW of here earthquakes near Ponce Municipio
Guánica Municipio, PR 24 km (15 mi) SE of here earthquakes near Guánica Municipio
Yauco Municipio, PR 32 km (20 mi) SSE of here earthquakes near Yauco Municipio
Juana Díaz Municipio, PR 32 km (20 mi) SW of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 1.7 1 km NNE of Sabana Grande, Puerto Rico
  2. 1.8 4 km W of Palmarejo, Puerto Rico
  3. 1.7 7 km ENE of Sabana Grande, Puerto Rico
  4. 1.7 8 km SW of La Parguera, Puerto Rico
  5. 2.0 10 km E of Maricao, Puerto Rico
  6. 1.9 8 km SE of La Parguera, Puerto Rico
  7. 1.9 5 km NW of Adjuntas, Puerto Rico
  8. 1.6 2 km SSW of Palmarejo, Puerto Rico
  9. 2.0 0 km ESE of Palmarejo, Puerto Rico
  10. 1.7 2 km S of Maricao, Puerto Rico
  11. 1.6 3 km SSW of Maricao, Puerto Rico
  12. 2.5 3 km WSW of Maricao, 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.