QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

71 km W of Pole Ojea, Puerto Rico

· 72 km deep · released about 480 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 13 kmCabo Rojo Municipio 72 kmRincón Municipio 77 kmHormigueros Municipio 81 kmAguada Municipio 85 kmAñasco Municipio 85 kmLajas Municipio 87 kmSan Germán Municipio 89 kmMoca Municipio 94 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
72 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 13 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3367 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 480 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 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 17.9713, -67.8630. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 13 km (8 mi) S of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 72 km (45 mi) W of here earthquakes near Cabo Rojo Municipio
Rincón Municipio, PR 77 km (48 mi) WSW of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 81 km (50 mi) WSW of here earthquakes near Hormigueros Municipio
Aguada Municipio, PR 85 km (53 mi) WSW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 85 km (53 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. 2.6 27 km SW of Stella, Puerto Rico
  2. 2.7 52 km SE of Punta Cana, Dominican Republic
  3. 2.9 51 km SE of Punta Cana, Dominican Republic
  4. 2.9 Puerto Rico region
  5. 2.9 56 km SE of Boca de Yuma, Dominican Republic
  6. 2.8 38 km W of Puerto Real, Puerto Rico
  7. 3.2 48 km ESE of Punta Cana, Dominican Republic
  8. 1.9 59 km W of Stella, Puerto Rico
  9. 2.9 86 km WSW of Pole Ojea, Puerto Rico
  10. 2.9 41 km WSW of Stella, Puerto Rico
  11. 2.4 45 km SE of Punta Cana, Dominican Republic
  12. 2.5 63 km SE of Punta Cana, Dominican Republic
  13. 3.3 69 km SE of Punta Cana, Dominican Republic
  14. 3.1 73 km WSW of Stella, Puerto Rico
  15. 3.0 45 km WSW of Stella, 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

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