QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

48 km S of Pole Ojea, Puerto Rico

· 6.0 km deep · released about 2.7 tons of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 51 kmLajas Municipio 53 kmGuánica Municipio 56 kmSan Germán Municipio 66 kmHormigueros Municipio 67 kmSabana Grande Municipio 68 kmGuayanilla Municipio 70 kmYauco Municipio 73 kmPeñuelas Municipio 76 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 3.5 (md)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 51 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3260 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 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 63,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,000× the energy of this one
  4. This earthquake M 3.5 about 2.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.6× more

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 17.5435, -67.2421. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 51 km (32 mi) S of here earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 53 km (33 mi) SSW of here earthquakes near Lajas Municipio
Guánica Municipio, PR 56 km (35 mi) SW of here earthquakes near Guánica Municipio
San Germán Municipio, PR 66 km (41 mi) SSW of here earthquakes near San Germán Municipio
Hormigueros Municipio, PR 67 km (42 mi) SSW of here earthquakes near Hormigueros Municipio
Sabana Grande Municipio, PR 68 km (42 mi) SSW of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 1.9 17 km SSE of Guánica, Puerto Rico
  2. 1.8 16 km NNE of La Parguera, Puerto Rico
  3. 1.6 20 km S of La Parguera, Puerto Rico
  4. 1.7 8 km S of La Parguera, Puerto Rico
  5. 2.0 5 km SSW of La Parguera, Puerto Rico
  6. 1.9 19 km SSE of La Parguera, Puerto Rico
  7. 1.7 25 km S of La Parguera, Puerto Rico
  8. 1.9 33 km S of La Parguera, Puerto Rico
  9. 3.0 40 km SSW of Pole Ojea, Puerto Rico
  10. 2.0 23 km S of Pole Ojea, Puerto Rico
  11. 1.8 20 km SSW of Pole Ojea, Puerto Rico
  12. 2.6 24 km SSE of Pole Ojea, Puerto Rico
  13. 2.9 Puerto Rico region
  14. 1.6 Puerto Rico region
  15. 1.9 8 km SSE 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.