QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

2 km WSW of Río Lajas, Puerto Rico

· 59 km deep · released about 360 lb of TNT

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10 km30 km60 km120 km N Toa Alta Municipio 5 kmVega Alta Municipio 7 kmDorado Municipio 10 kmCorozal Municipio 10 kmNaranjito Municipio 12 kmToa Baja Municipio 12 kmBayamón Municipio 13 kmVega Baja Municipio 14 kmCataño Municipio 16 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 2.7 (md)
Depth
59 km below the surface
Felt
no reports yet
Nearest
Toa Alta Municipio, 5 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3393 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 360 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 42,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 30,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.6× the energy of this one
  4. This earthquake M 2.7 about 360 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 18.3896, -66.2865. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Toa Alta Municipio, PR 5 km (3 mi) WNW of here earthquakes near Toa Alta Municipio
Vega Alta Municipio, PR 7 km (5 mi) SE of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 10 km (6 mi) SSW of here earthquakes near Dorado Municipio
Corozal Municipio, PR 10 km (6 mi) NNE of here earthquakes near Corozal Municipio
Naranjito Municipio, PR 12 km (7 mi) NNW of here earthquakes near Naranjito Municipio
Toa Baja Municipio, PR 12 km (8 mi) SW of here earthquakes near Toa Baja Municipio

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

Aftershocks so far

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

  1. 2.8 15 km N of Brenas, Puerto Rico
  2. 2.4 3 km S of Salinas, Puerto Rico
  3. 2.8 32 km N of Tierras Nuevas Poniente, Puerto Rico
  4. 2.7 26 km N of Tierras Nuevas Poniente, Puerto Rico
  5. 2.9 24 km N of Brenas, Puerto Rico
  6. 2.2 4 km W of Central Aguirre, Puerto Rico
  7. 2.7 6 km SSW of Corozal, Puerto Rico
  8. 3.1 5 km NE of Orocovis, Puerto Rico
  9. 2.4 2 km W of Aibonito, Puerto Rico
  10. 3.0 6 km NW of Palomas, Puerto Rico
  11. 2.9 2 km NNE of Franquez, Puerto Rico
  12. 2.7 7 km NW of Sumidero, Puerto Rico
  13. 2.8 7 km N of Tierras Nuevas Poniente, Puerto Rico
  14. 2.4 4 km SE of Salinas, Puerto Rico
  15. 3.0 4 km SE 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.