QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

5 km NE of Orocovis, Puerto Rico

· 32 km deep · released about 1,200 lb of TNT

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10 km30 km60 km120 km N Corozal Municipio 6 kmBarranquitas Municipio 8 kmMorovis Municipio 9 kmOrocovis Municipio 10 kmNaranjito Municipio 11 kmComerío Municipio 15 kmToa Alta Municipio 16 kmAibonito Municipio 17 kmCoamo 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 3.1 (md)
Depth
32 km below the surface
Felt
no reports yet
Nearest
Corozal Municipio, 6 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3240 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 1,200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 280,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,800× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× 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 18.2610, -66.3536. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Corozal Municipio, PR 6 km (3 mi) SSW of here earthquakes near Corozal Municipio
Barranquitas Municipio, PR 8 km (5 mi) NW of here earthquakes near Barranquitas Municipio
Morovis Municipio, PR 9 km (6 mi) SE of here earthquakes near Morovis Municipio
Orocovis Municipio, PR 10 km (6 mi) ENE of here earthquakes near Orocovis Municipio
Naranjito Municipio, PR 11 km (7 mi) WSW of here earthquakes near Naranjito Municipio
Comerío Municipio, PR 15 km (9 mi) WNW of here earthquakes near Comerío Municipio

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

Aftershocks so far

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

  1. 3.0 4 km SSE of Cayey, Puerto Rico
  2. 1.9 3 km NNW of Potala Pastillo, Puerto Rico
  3. 1.6 1 km E of Capitanejo, Puerto Rico
  4. 2.7 11 km S of Jauca, Puerto Rico
  5. 2.4 1 km SSW of Potala Pastillo, Puerto Rico
  6. 2.2 6 km SSE of Jauca, Puerto Rico
  7. 2.9 7 km S of Jauca, Puerto Rico
  8. 3.1 12 km S of Santa Isabel, Puerto Rico
  9. 3.1 Puerto Rico region
  10. 3.3 12 km NNE of Tierras Nuevas Poniente, Puerto Rico
  11. 2.5 5 km E of Bayamon, Puerto Rico
  12. 3.1 1 km SW of Trujillo Alto, Puerto Rico
  13. 2.4 3 km SW of Santa Isabel, Puerto Rico
  14. 2.5 2 km ESE of Mariano Colón, Puerto Rico
  15. 2.3 3 km WNW of Santo Domingo, 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.