QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

4 km S of La Playa, Puerto Rico

· 116 km deep · released about 570 lb of TNT

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10 km30 km60 km120 km N Añasco Municipio 7 kmRincón Municipio 12 kmAguada Municipio 14 kmHormigueros Municipio 15 kmMoca Municipio 18 kmLas Marías Municipio 22 kmSan Germán Municipio 22 kmSan Sebastián Municipio 24 kmAguadilla Municipio 26 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 2.9 (md)
Depth
116 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 7 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2696 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 570 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 27,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.9 about 570 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 18.2498, -67.1811. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 7 km (4 mi) SW of here earthquakes near Añasco Municipio
Rincón Municipio, PR 12 km (8 mi) SE of here earthquakes near Rincón Municipio
Aguada Municipio, PR 14 km (9 mi) S of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 15 km (9 mi) NNW of here earthquakes near Hormigueros Municipio
Moca Municipio, PR 18 km (11 mi) SW of here earthquakes near Moca Municipio
Las Marías Municipio, PR 22 km (13 mi) W of here earthquakes near Las Marías Municipio

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

Aftershocks so far

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

  1. 2.7 13 km NNW of Rincón, Puerto Rico
  2. 2.1 16 km S of Pole Ojea, Puerto Rico
  3. 1.8 2 km NW of Indios, Puerto Rico
  4. 1.5 1 km NNW of Yauco, Puerto Rico
  5. 1.7 3 km S of Maricao, Puerto Rico
  6. 1.8 3 km W of La Playa, Puerto Rico
  7. 2.2 7 km WSW of Maricao, Puerto Rico
  8. 2.5 2 km S of Las Marías, Puerto Rico
  9. 2.1 11 km WNW of Puerto Real, Puerto Rico
  10. 1.9 1 km S of Lajas, Puerto Rico
  11. 1.9 14 km S of Pole Ojea, Puerto Rico
  12. 2.4 7 km NNW of Puerto Real, Puerto Rico
  13. 2.6 21 km NW of San Antonio, Puerto Rico
  14. 1.7 3 km WNW of Cabo Rojo, Puerto Rico
  15. 2.6 5 km W of Mayagüez, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-10-14 — it released about 150 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.