QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

69 km W of Pole Ojea, Puerto Rico

· 2.0 km deep · released about 450 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 16 kmCabo Rojo Municipio 70 kmRincón Municipio 76 kmHormigueros Municipio 79 kmAñasco Municipio 83 kmAguada Municipio 83 kmLajas Municipio 84 kmSan Germán Municipio 86 kmMoca Municipio 93 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
2.0 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 16 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2810 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 17.9500, -67.8365. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 16 km (10 mi) SSE of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 70 km (43 mi) W of here earthquakes near Cabo Rojo Municipio
Rincón Municipio, PR 76 km (47 mi) SW of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 79 km (49 mi) WSW of here earthquakes near Hormigueros Municipio
Añasco Municipio, PR 83 km (52 mi) WSW of here earthquakes near Añasco Municipio
Aguada Municipio, PR 83 km (52 mi) SW of here earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 3.0 41 km W of Rincón, Puerto Rico
  2. 2.8 27 km SW of Stella, Puerto Rico
  3. 2.8 47 km WSW of Stella, Puerto Rico
  4. 3.0 53 km W of Stella, Puerto Rico
  5. 3.1 52 km SE of Boca de Yuma, Dominican Republic
  6. 2.7 54 km ESE of Punta Cana, Dominican Republic
  7. 2.0 20 km W of Puerto Real, Puerto Rico
  8. 2.9 63 km SE of Punta Cana, Dominican Republic
  9. 2.9 59 km SE of Punta Cana, Dominican Republic
  10. 2.6 25 km W of Puerto Real, Puerto Rico
  11. 2.8 71 km WSW of Stella, Puerto Rico
  12. 3.0 40 km WSW of Stella, Puerto Rico
  13. 2.7 55 km W of Pole Ojea, Puerto Rico
  14. 2.7 31 km WSW of Stella, Puerto Rico
  15. 2.4 74 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 4.3 on 2017-07-18 — it released about 190 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.