QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

8 km SE of La Parguera, Puerto Rico

· 13 km deep · released about 15 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 8 kmLajas Municipio 9 kmSabana Grande Municipio 19 kmSan Germán Municipio 22 kmCabo Rojo Municipio 22 kmGuayanilla Municipio 22 kmYauco Municipio 23 kmHormigueros Municipio 28 kmMaricao Municipio 29 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 1.8 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 8 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2874 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 17.9165, -66.9888. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 8 km (5 mi) WSW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 9 km (5 mi) SE of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 19 km (12 mi) SSW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 22 km (14 mi) SSE of here earthquakes near San Germán Municipio
Cabo Rojo Municipio, PR 22 km (14 mi) ESE of here earthquakes near Cabo Rojo Municipio
Guayanilla Municipio, PR 22 km (14 mi) WSW of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 1.9 5 km SSW of Adjuntas, Puerto Rico
  2. 2.0 17 km S of Pole Ojea, Puerto Rico
  3. 1.8 10 km SSE of La Parguera, Puerto Rico
  4. 1.5 Puerto Rico region
  5. 2.1 1 km NNW of Sabana Grande, Puerto Rico
  6. 2.0 0 km W of Sabana Grande, Puerto Rico
  7. 2.3 1 km SW of Espino, Puerto Rico
  8. 2.4 10 km SE of Pole Ojea, Puerto Rico
  9. 2.1 15 km S of Pole Ojea, Puerto Rico
  10. 1.9 17 km S of Pole Ojea, Puerto Rico
  11. 1.8 0 km N of Guayanilla, Puerto Rico
  12. 1.8 2 km SE of Maricao, Puerto Rico
  13. 2.6 Puerto Rico region
  14. 1.8 23 km S of La Parguera, Puerto Rico
  15. 1.8 9 km S 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

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