QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

0 km E of Parcelas Peñuelas, Puerto Rico

· 9.2 km deep · released about 650 lb of TNT

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10 km30 km60 km120 km N Santa Isabel Municipio 8 kmSalinas Municipio 8 kmCoamo Municipio 12 kmAibonito Municipio 16 kmJuana Díaz Municipio 17 kmVillalba Municipio 21 kmGuayama Municipio 21 kmBarranquitas Municipio 22 kmCayey Municipio 22 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
9.2 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 8 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 48 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 650 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 23,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 650 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 17.9998, -66.3338. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 8 km (5 mi) NE of here earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 8 km (5 mi) WNW of here earthquakes near Salinas Municipio
Coamo Municipio, PR 12 km (7 mi) SSE of here earthquakes near Coamo Municipio
Aibonito Municipio, PR 16 km (10 mi) SSW of here earthquakes near Aibonito Municipio
Juana Díaz Municipio, PR 17 km (10 mi) E of here earthquakes near Juana Díaz Municipio
Villalba Municipio, PR 21 km (13 mi) SE of here earthquakes near Villalba Municipio

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

Aftershocks so far

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

  1. 2.1 1 km WNW of Magas Arriba, Puerto Rico
  2. 2.2 4 km S of Magas Arriba, Puerto Rico
  3. 2.4 0 km ESE of Potala Pastillo, Puerto Rico
  4. 2.3 1 km E of Coto Laurel, Puerto Rico
  5. 1.9 10 km SSE of Indios, Puerto Rico
  6. 2.9 3 km SSE of Magas Arriba, Puerto Rico
  7. 2.2 2 km NNW of Guayanilla, Puerto Rico
  8. 2.2 0 km WSW of Magas Arriba, Puerto Rico
  9. 2.3 0 km S of Tallaboa, Puerto Rico
  10. 2.5 4 km SSE of Magas Arriba, Puerto Rico
  11. 2.2 5 km WSW of Naranjito, Puerto Rico
  12. 2.2 3 km E of Magas Arriba, Puerto Rico
  13. 2.3 2 km NW of Tallaboa, Puerto Rico
  14. 2.2 0 km WSW of Tallaboa Alta, Puerto Rico
  15. 2.0 1 km W of Tallaboa, 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 5.6 on 2020-01-07 — it released about 12,000 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.