QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

1 km SSE of Brenas, Puerto Rico

· 81 km deep · released about 360 lb of TNT

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10 km30 km60 km120 km N Vega Alta Municipio 2 kmVega Baja Municipio 6 kmDorado Municipio 8 kmToa Alta Municipio 14 kmToa Baja Municipio 15 kmManatí Municipio 17 kmCorozal Municipio 17 kmMorovis Municipio 18 kmCataño Municipio 20 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
81 km below the surface
Felt
no reports yet
Nearest
Vega Alta Municipio, 2 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3253 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 18.4585, -66.3368. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Alta Municipio, PR 2 km (2 mi) N of here earthquakes near Vega Alta Municipio
Vega Baja Municipio, PR 6 km (4 mi) E of here earthquakes near Vega Baja Municipio
Dorado Municipio, PR 8 km (5 mi) WSW of here earthquakes near Dorado Municipio
Toa Alta Municipio, PR 14 km (9 mi) NW of here earthquakes near Toa Alta Municipio
Toa Baja Municipio, PR 15 km (9 mi) W of here earthquakes near Toa Baja Municipio
Manatí Municipio, PR 17 km (10 mi) E of here earthquakes near Manatí Municipio

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

Aftershocks so far

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

  1. 3.1 8 km NNW of Arecibo, Puerto Rico
  2. 3.1 18 km NNW of Brenas, Puerto Rico
  3. 2.0 3 km SSE of Carolina, Puerto Rico
  4. 3.2 41 km N of Brenas, Puerto Rico
  5. 2.7 26 km NNW of Brenas, Puerto Rico
  6. 2.9 1 km WSW of Cataño, Puerto Rico
  7. 2.6 5 km N of Brenas, Puerto Rico
  8. 1.9 8 km NNE of Animas, Puerto Rico
  9. 2.7 10 km NNW of Tierras Nuevas Poniente, Puerto Rico
  10. 1.9 1 km SSW of Guayabal, Puerto Rico
  11. 1.8 5 km NNE of Villalba, Puerto Rico
  12. 3.0 1 km E of Barceloneta, Puerto Rico
  13. 2.5 18 km N of Arecibo, Puerto Rico
  14. 2.5 2 km WNW of Sabana, Puerto Rico
  15. 2.4 5 km SW of Orocovis, 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.