QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

3 km NNW of Playita Cortada, Puerto Rico

· 17 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Juana Díaz Municipio 4 kmSanta Isabel Municipio 9 kmVillalba Municipio 14 kmCoamo Municipio 15 kmPonce Municipio 16 kmSalinas Municipio 21 kmOrocovis Municipio 23 kmAibonito Municipio 24 kmBarranquitas Municipio 26 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 1.6 (md)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 4 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2867 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 18.0085, -66.4550. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 4 km (2 mi) ENE of here earthquakes near Juana Díaz Municipio
Santa Isabel Municipio, PR 9 km (6 mi) NW of here earthquakes near Santa Isabel Municipio
Villalba Municipio, PR 14 km (9 mi) S of here earthquakes near Villalba Municipio
Coamo Municipio, PR 15 km (9 mi) SW of here earthquakes near Coamo Municipio
Ponce Municipio, PR 16 km (10 mi) E of here earthquakes near Ponce Municipio
Salinas Municipio, PR 21 km (13 mi) WNW of here earthquakes near Salinas Municipio

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

Aftershocks so far

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

  1. 1.8 7 km S of Tallaboa, Puerto Rico
  2. 2.2 7 km S of Tallaboa, Puerto Rico
  3. 1.7 7 km S of Tallaboa, Puerto Rico
  4. 1.7 9 km S of Tallaboa, Puerto Rico
  5. 2.4 8 km S of Tallaboa, Puerto Rico
  6. 1.6 5 km SW of Tallaboa, Puerto Rico
  7. 1.6 8 km S of Tallaboa, Puerto Rico
  8. 2.0 8 km S of Tallaboa, Puerto Rico
  9. 2.2 12 km S of Tallaboa, Puerto Rico
  10. 2.0 Puerto Rico region
  11. 1.8 1 km NW of H. Rivera Colon, Puerto Rico
  12. 1.6 3 km SE of Santa Isabel, Puerto Rico
  13. 2.3 2 km SSW of Adjuntas, Puerto Rico
  14. 2.9 2 km ESE of H. Rivera Colon, Puerto Rico
  15. 2.3 4 km ESE 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.