QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

25 km S of Guánica, Puerto Rico

· 9.0 km deep · released about 5.6 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 23 kmLajas Municipio 29 kmGuayanilla Municipio 33 kmSabana Grande Municipio 38 kmPeñuelas Municipio 38 kmCabo Rojo Municipio 39 kmYauco Municipio 39 kmSan Germán Municipio 42 kmPonce Municipio 45 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 1.5 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 23 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3060 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 17.7416, -66.9320. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 23 km (14 mi) S of here earthquakes near Guánica Municipio
Lajas Municipio, PR 29 km (18 mi) SSE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 33 km (20 mi) SSW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 38 km (24 mi) S of here earthquakes near Sabana Grande Municipio
Peñuelas Municipio, PR 38 km (24 mi) SW of here earthquakes near Peñuelas Municipio
Cabo Rojo Municipio, PR 39 km (24 mi) SE of here earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 1.7 20 km SSE of Maria Antonia, Puerto Rico
  2. 1.8 19 km SSE of Maria Antonia, Puerto Rico
  3. 2.4 3 km N of Lluveras, Puerto Rico
  4. 2.2 1 km NNE of Hormigueros, Puerto Rico
  5. 2.1 1 km NE of Guayanilla, Puerto Rico
  6. 2.1 28 km SW of Pole Ojea, Puerto Rico
  7. 2.0 17 km WSW of Pole Ojea, Puerto Rico
  8. 1.7 11 km S of Pole Ojea, Puerto Rico
  9. 1.6 2 km SSW of Sabana Eneas, Puerto Rico
  10. 2.0 39 km S of Tallaboa, Puerto Rico
  11. 2.3 3 km SE of Magas Arriba, Puerto Rico
  12. 1.7 8 km NW of Santo Domingo, Puerto Rico
  13. 2.6 11 km W of Pole Ojea, Puerto Rico
  14. 1.8 3 km WSW of Tallaboa, Puerto Rico
  15. 1.9 Puerto Rico region

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.