QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

44 km WSW of Stella, Puerto Rico

· 5.0 km deep · released about 570 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 28 kmRincón Municipio 45 kmCabo Rojo Municipio 52 kmAguada Municipio 53 kmAñasco Municipio 55 kmHormigueros Municipio 55 kmAguadilla Municipio 63 kmMoca Municipio 63 kmSan Germán Municipio 64 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
5.0 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 28 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2508 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 18.1711, -67.6385. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 28 km (17 mi) ENE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 45 km (28 mi) WSW of here earthquakes near Rincón Municipio
Cabo Rojo Municipio, PR 52 km (32 mi) WNW of here earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 53 km (33 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 55 km (34 mi) WSW of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 55 km (34 mi) W of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.9 55 km E of Punta Cana, Dominican Republic
  2. 2.1 20 km SW of Stella, Puerto Rico
  3. 2.9 Mona Passage
  4. 2.6 27 km W of Rincón, Puerto Rico
  5. 1.6 10 km NW of Puerto Real, Puerto Rico
  6. 1.9 7 km WNW of Pole Ojea, Puerto Rico
  7. 2.8 56 km SE of Punta Cana, Dominican Republic
  8. 2.3 33 km WSW of Stella, Puerto Rico
  9. 2.1 11 km NW of Puerto Real, Puerto Rico
  10. 2.3 16 km SSW of Stella, Puerto Rico
  11. 2.3 26 km W of Puerto Real, Puerto Rico
  12. 2.3 14 km SW of Stella, Puerto Rico
  13. 2.4 24 km WNW of Puerto Real, Puerto Rico
  14. 1.6 5 km W of Pole Ojea, Puerto Rico
  15. 2.2 17 km WNW of Puerto Real, 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 4.4 on 2017-10-01 — it released about 210 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.