QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

8 km SW of La Parguera, Puerto Rico

· 9.0 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 9 kmCabo Rojo Municipio 11 kmGuánica Municipio 20 kmSan Germán Municipio 21 kmHormigueros Municipio 23 kmSabana Grande Municipio 24 kmYauco Municipio 32 kmMaricao Municipio 33 kmGuayanilla Municipio 34 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
9.0 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 9 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2712 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 11 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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 17.9281, -67.1073. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 9 km (6 mi) SW of here earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 11 km (7 mi) SE of here earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 20 km (12 mi) W of here earthquakes near Guánica Municipio
San Germán Municipio, PR 21 km (13 mi) SSW of here earthquakes near San Germán Municipio
Hormigueros Municipio, PR 23 km (14 mi) S of here earthquakes near Hormigueros Municipio
Sabana Grande Municipio, PR 24 km (15 mi) SW of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 1.9 19 km S of Tallaboa, Puerto Rico
  2. 1.8 18 km SSW of Guánica, Puerto Rico
  3. 2.1 1 km NW of Maricao, Puerto Rico
  4. 1.5 Puerto Rico region
  5. 2.2 9 km WSW of Mayagüez, Puerto Rico
  6. 2.1 19 km WSW of Stella, Puerto Rico
  7. 2.4 18 km WNW of Puerto Real, Puerto Rico
  8. 3.3 Mona Passage
  9. 2.4 21 km SW of Stella, Puerto Rico
  10. 2.2 1 km E of Luyando, Puerto Rico
  11. 1.9 21 km W of Puerto Real, Puerto Rico
  12. 1.9 6 km SW of Adjuntas, Puerto Rico
  13. 1.8 2 km SW of Pole Ojea, Puerto Rico
  14. 1.6 5 km ESE of Boquerón, Puerto Rico
  15. 1.8 10 km SSW of Guánica, 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.