QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

37 km SSE of Tallaboa, Puerto Rico

· 40 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 38 kmJuana Díaz Municipio 41 kmPeñuelas Municipio 42 kmGuayanilla Municipio 42 kmSanta Isabel Municipio 42 kmGuánica Municipio 44 kmYauco Municipio 53 kmSalinas Municipio 53 kmLajas Municipio 55 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
40 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 38 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2502 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 17.6595, -66.6415. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 38 km (24 mi) S of here earthquakes near Ponce Municipio
Juana Díaz Municipio, PR 41 km (25 mi) SSW of here earthquakes near Juana Díaz Municipio
Peñuelas Municipio, PR 42 km (26 mi) SSE of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 42 km (26 mi) SSE of here earthquakes near Guayanilla Municipio
Santa Isabel Municipio, PR 42 km (26 mi) SW of here earthquakes near Santa Isabel Municipio
Guánica Municipio, PR 44 km (27 mi) SE of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.0 21 km SSW of Potala Pastillo, Puerto Rico
  2. 1.6 7 km SSW of Guánica, Puerto Rico
  3. 2.1 12 km SSE of Ponce, Puerto Rico
  4. 2.4 12 km SW of Potala Pastillo, Puerto Rico
  5. 2.3 1 km NW of Jauca, Puerto Rico
  6. 2.2 13 km SW of Potala Pastillo, Puerto Rico
  7. 2.3 13 km SSW of Potala Pastillo, Puerto Rico
  8. 2.0 12 km SSE of Ponce, Puerto Rico
  9. 2.1 11 km SSE of Ponce, Puerto Rico
  10. 2.0 Puerto Rico region
  11. 1.9 1 km SSE of Santa Isabel, Puerto Rico
  12. 2.1 13 km SW of Potala Pastillo, Puerto Rico
  13. 2.0 11 km SSE of Ponce, Puerto Rico
  14. 2.0 12 km SSE of Ponce, Puerto Rico
  15. 2.4 11 km SSE of Ponce, 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.