QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

20 km W of Pole Ojea, Puerto Rico

· 1.0 km deep · released about 460 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 21 kmHormigueros Municipio 33 kmLajas Municipio 36 kmSan Germán Municipio 39 kmRincón Municipio 43 kmAñasco Municipio 44 kmSabana Grande Municipio 48 kmGuánica Municipio 49 kmAguada Municipio 49 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
1.0 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 21 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1838 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 460 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 33,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 23,000× 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 460 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 17.9746, -67.3826. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 21 km (13 mi) W of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 33 km (21 mi) WSW of here earthquakes near Hormigueros Municipio
Lajas Municipio, PR 36 km (23 mi) W of here earthquakes near Lajas Municipio
San Germán Municipio, PR 39 km (24 mi) WSW of here earthquakes near San Germán Municipio
Rincón Municipio, PR 43 km (27 mi) SSW of here earthquakes near Rincón Municipio
Añasco Municipio, PR 44 km (27 mi) SW of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.4 6 km E of La Parguera, Puerto Rico
  2. 2.9 6 km E of La Parguera, Puerto Rico
  3. 3.0 7 km WSW of La Parguera, Puerto Rico
  4. 1.6 5 km WSW of La Parguera, Puerto Rico
  5. 1.9 9 km S of La Parguera, Puerto Rico
  6. 2.1 4 km W of Pole Ojea, Puerto Rico
  7. 3.1 7 km ESE of Pole Ojea, Puerto Rico
  8. 2.6 6 km S of Guánica, Puerto Rico
  9. 2.8 7 km ESE of La Parguera, Puerto Rico
  10. 3.3 7 km ESE of La Parguera, Puerto Rico
  11. 3.0 6 km WSW of La Parguera, Puerto Rico
  12. 1.6 6 km WSW of Fuig, Puerto Rico
  13. 3.0 6 km W of La Parguera, Puerto Rico
  14. 1.8 5 km WSW of La Parguera, Puerto Rico
  15. 3.1 7 km ESE of Pole Ojea, 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 5.3 on 2020-07-03 — it released about 5,800 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.