QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

3 km E of Sabana Grande, Puerto Rico

· 12 km deep · released about 9.3 lb of TNT

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10 km30 km60 km120 km N Sabana Grande Municipio 2 kmYauco Municipio 7 kmMaricao Municipio 11 kmSan Germán Municipio 12 kmGuánica Municipio 14 kmGuayanilla Municipio 16 kmLajas Municipio 16 kmLas Marías Municipio 17 kmHormigueros Municipio 21 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 1.7 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Sabana Grande Municipio, 2 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3134 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 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 18.0781, -66.9270. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sabana Grande Municipio, PR 2 km (1 mi) ESE of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 7 km (5 mi) W of here earthquakes near Yauco Municipio
Maricao Municipio, PR 11 km (7 mi) S of here earthquakes near Maricao Municipio
San Germán Municipio, PR 12 km (8 mi) ESE of here earthquakes near San Germán Municipio
Guánica Municipio, PR 14 km (9 mi) N of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 16 km (10 mi) WNW of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 2.0 1 km NNE of Sabana Eneas, Puerto Rico
  2. 2.1 8 km SSE of La Parguera, Puerto Rico
  3. 2.1 7 km SSE of Guánica, Puerto Rico
  4. 1.9 0 km W of Sabana Grande, Puerto Rico
  5. 2.1 4 km ESE of Boquerón, Puerto Rico
  6. 1.9 4 km SSE of Tallaboa, Puerto Rico
  7. 2.0 6 km NW of Puerto Real, Puerto Rico
  8. 2.5 3 km NNW of Lluveras, Puerto Rico
  9. 1.8 3 km WSW of Sabana Grande, Puerto Rico
  10. 2.0 7 km SSW of Indios, Puerto Rico
  11. 2.5 8 km S of Pole Ojea, Puerto Rico
  12. 2.0 1 km N of La Playa, Puerto Rico
  13. 2.4 8 km ESE of Jayuya, Puerto Rico
  14. 1.7 6 km E of Hormigueros, Puerto Rico
  15. 1.9 5 km W of Hormigueros, 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.