QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

47 km WSW of Stella, Puerto Rico

· 141 km deep · released about 450 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 25 kmRincón Municipio 48 kmCabo Rojo Municipio 53 kmAguada Municipio 56 kmHormigueros Municipio 57 kmAñasco Municipio 57 kmSan Germán Municipio 65 kmAguadilla Municipio 66 kmMoca Municipio 66 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 2.8 (md)
Depth
141 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 25 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2675 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 450 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 34,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 24,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 450 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 18.1420, -67.6536. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 25 km (16 mi) ENE of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 48 km (30 mi) WSW of here earthquakes near Rincón Municipio
Cabo Rojo Municipio, PR 53 km (33 mi) WNW of here earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 56 km (35 mi) WSW of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 57 km (35 mi) W of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 57 km (36 mi) WSW of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.1 18 km SW of Stella, Puerto Rico
  2. 2.1 27 km SW of Stella, Puerto Rico
  3. 2.2 18 km W of Puerto Real, Puerto Rico
  4. 2.0 16 km WNW of Puerto Real, Puerto Rico
  5. 2.6 28 km WNW of Rincón, Puerto Rico
  6. 2.8 53 km SE of Punta Cana, Dominican Republic
  7. 2.0 8 km SW of Pole Ojea, Puerto Rico
  8. 2.6 51 km WSW of Stella, Puerto Rico
  9. 1.9 1 km W of Puerto Real, Puerto Rico
  10. 2.6 26 km WSW of Stella, Puerto Rico
  11. 2.3 12 km SW of La Playa, Puerto Rico
  12. 1.8 15 km WSW of Puerto Real, Puerto Rico
  13. 2.4 19 km W of Puerto Real, Puerto Rico
  14. 2.8 20 km WNW of Puerto Real, Puerto Rico
  15. 2.8 50 km SE of Punta Cana, Dominican Republic

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 270 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.