QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

5 km E of Lajas, Puerto Rico

· 15 km deep · released about 9.3 lb of TNT

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10 km30 km60 km120 km N Sabana Grande Municipio 8 kmSan Germán Municipio 8 kmLajas Municipio 8 kmGuánica Municipio 14 kmHormigueros Municipio 15 kmMaricao Municipio 16 kmYauco Municipio 16 kmCabo Rojo Municipio 19 kmLas Marías 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
15 km below the surface
Felt
no reports yet
Nearest
Sabana Grande Municipio, 8 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2864 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 18.0435, -67.0058. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sabana Grande Municipio, PR 8 km (5 mi) SW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 8 km (5 mi) SSE of here earthquakes near San Germán Municipio
Lajas Municipio, PR 8 km (5 mi) NNE of here earthquakes near Lajas Municipio
Guánica Municipio, PR 14 km (9 mi) NW of here earthquakes near Guánica Municipio
Hormigueros Municipio, PR 15 km (10 mi) SE of here earthquakes near Hormigueros Municipio
Maricao Municipio, PR 16 km (10 mi) SSW of here earthquakes near Maricao 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. 2.0 Puerto Rico region
  2. 2.3 2 km NW of Puerto Real, Puerto Rico
  3. 2.1 5 km W of Maricao, Puerto Rico
  4. 1.6 4 km WSW of La Parguera, Puerto Rico
  5. 2.2 2 km NNE of La Playa, Puerto Rico
  6. 2.3 2 km SSW of Adjuntas, Puerto Rico
  7. 2.3 4 km ESE of Ponce, Puerto Rico
  8. 2.0 Puerto Rico region
  9. 2.0 7 km WSW of Las Marías, Puerto Rico
  10. 1.9 3 km ESE of Ponce, Puerto Rico
  11. 1.9 12 km SSE of Lares, Puerto Rico
  12. 1.7 9 km SSW of Guánica, Puerto Rico
  13. 1.9 4 km NNW of Sabana Grande, Puerto Rico
  14. 2.0 11 km WNW of Puerto Real, Puerto Rico
  15. 1.8 0 km SE of Fuig, 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.