QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

3 km E of Magas Arriba, Puerto Rico

· 14 km deep · released about 550 lb of TNT

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10 km30 km60 km120 km N Peñuelas Municipio 1 kmGuayanilla Municipio 7 kmPonce Municipio 14 kmYauco Municipio 15 kmAdjuntas Municipio 18 kmGuánica Municipio 21 kmSabana Grande Municipio 23 kmJuana Díaz Municipio 26 kmJayuya Municipio 27 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
14 km below the surface
Felt
no reports yet
Nearest
Peñuelas Municipio, 1 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1884 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 550 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 28,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.8 about 550 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 18.0193, -66.7376. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Peñuelas Municipio, PR 1 km (1 mi) SW of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 7 km (4 mi) ENE of here earthquakes near Guayanilla Municipio
Ponce Municipio, PR 14 km (9 mi) W of here earthquakes near Ponce Municipio
Yauco Municipio, PR 15 km (9 mi) ESE of here earthquakes near Yauco Municipio
Adjuntas Municipio, PR 18 km (11 mi) S of here earthquakes near Adjuntas Municipio
Guánica Municipio, PR 21 km (13 mi) ENE of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.4 1 km N of Tallaboa, Puerto Rico
  2. 2.6 8 km SW of La Parguera, Puerto Rico
  3. 2.8 2 km ENE of Maria Antonia, Puerto Rico
  4. 2.8 4 km S of Indios, Puerto Rico
  5. 2.5 4 km WSW of Fuig, Puerto Rico
  6. 2.7 2 km ENE of Lluveras, Puerto Rico
  7. 2.9 3 km WSW of Fuig, Puerto Rico
  8. 2.9 4 km W of Fuig, Puerto Rico
  9. 3.5 3 km WSW of Fuig, Puerto Rico
  10. 2.5 8 km SSW of Guánica, Puerto Rico
  11. 3.1 5 km WSW of La Parguera, Puerto Rico
  12. 2.4 5 km E of La Parguera, Puerto Rico
  13. 3.3 4 km E of La Parguera, Puerto Rico
  14. 2.4 4 km ENE of Tallaboa, Puerto Rico
  15. 2.4 1 km SSE of Guánica, 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 220,000 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.