QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

36 km S of Tallaboa, Puerto Rico

· 13 km deep · released about 460 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 36 kmGuayanilla Municipio 38 kmPeñuelas Municipio 40 kmPonce Municipio 40 kmLajas Municipio 46 kmJuana Díaz Municipio 46 kmYauco Municipio 47 kmSanta Isabel Municipio 50 kmSabana Grande Municipio 50 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
13 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 36 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1215 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 17.6698, -66.7558. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 36 km (22 mi) SSE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 38 km (23 mi) S of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 40 km (25 mi) S of here earthquakes near Peñuelas Municipio
Ponce Municipio, PR 40 km (25 mi) SSW of here earthquakes near Ponce Municipio
Lajas Municipio, PR 46 km (28 mi) SE of here earthquakes near Lajas Municipio
Juana Díaz Municipio, PR 46 km (29 mi) SW of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 2.1 Puerto Rico region
  2. 2.0 Puerto Rico region
  3. 3.2 3 km NNE of Ponce, Puerto Rico
  4. 1.8 6 km WSW of Guánica, Puerto Rico
  5. 2.5 8 km SE of La Parguera, Puerto Rico
  6. 2.5 5 km SE of Maria Antonia, Puerto Rico
  7. 2.1 4 km E of Tallaboa, Puerto Rico
  8. 2.6 Puerto Rico region
  9. 3.3 5 km SSW of Indios, Puerto Rico
  10. 2.2 Puerto Rico region
  11. 2.7 2 km ESE of Palomas, Puerto Rico
  12. 1.9 1 km NNE of Yauco, Puerto Rico
  13. 2.3 5 km SW of Guánica, Puerto Rico
  14. 2.6 6 km WSW of Guánica, Puerto Rico
  15. 3.1 7 km WSW of Fuig, 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 6.4 on 2020-01-07 — it released about 260,000 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.