QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

7 km WSW of Naranjito, Puerto Rico

· 20 km deep · released about 38 lb of TNT

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10 km30 km60 km120 km N Corozal Municipio 4 kmNaranjito Municipio 6 kmBarranquitas Municipio 8 kmComerío Municipio 11 kmToa Alta Municipio 12 kmMorovis Municipio 13 kmOrocovis Municipio 15 kmBayamón Municipio 17 kmAibonito Municipio 17 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 2.1 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Corozal Municipio, 4 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 133 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 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 18.2762, -66.3075. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Corozal Municipio, PR 4 km (2 mi) SSE of here earthquakes near Corozal Municipio
Naranjito Municipio, PR 6 km (4 mi) WSW of here earthquakes near Naranjito Municipio
Barranquitas Municipio, PR 8 km (5 mi) N of here earthquakes near Barranquitas Municipio
Comerío Municipio, PR 11 km (7 mi) WNW of here earthquakes near Comerío Municipio
Toa Alta Municipio, PR 12 km (7 mi) SW of here earthquakes near Toa Alta Municipio
Morovis Municipio, PR 13 km (8 mi) ESE of here earthquakes near Morovis Municipio

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

Aftershocks so far

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

  1. 2.1 5 km S of Salinas, Puerto Rico
  2. 2.8 5 km S of Salinas, Puerto Rico
  3. 2.9 12 km NNE of Tierras Nuevas Poniente, Puerto Rico
  4. 2.1 7 km SSW of Jagual, Puerto Rico
  5. 2.1 6 km SE of Ponce, Puerto Rico
  6. 2.1 3 km SW of Potala Pastillo, Puerto Rico
  7. 3.1 4 km N of San Juan, Puerto Rico
  8. 2.3 4 km N of Adjuntas, Puerto Rico
  9. 2.6 5 km SSW of Utuado, Puerto Rico
  10. 2.9 2 km NW of Sabana, Puerto Rico
  11. 2.1 7 km S of Salinas, Puerto Rico
  12. 2.2 5 km ENE of Comerío, Puerto Rico
  13. 2.2 3 km SSW of Salinas, Puerto Rico
  14. 2.0 8 km S of Salinas, Puerto Rico
  15. 1.9 1 km E of Salinas, 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.