QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

25 km NW of San Antonio, Puerto Rico

· 29 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Aguadilla Municipio 23 kmAguada Municipio 32 kmIsabela Municipio 33 kmRincón Municipio 34 kmMoca Municipio 37 kmQuebradillas Municipio 42 kmAñasco Municipio 43 kmSan Sebastián Municipio 48 kmCamuy Municipio 49 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
29 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 23 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3590 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 340 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 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 18.6443, -67.2825. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 23 km (15 mi) NW of here earthquakes near Aguadilla Municipio
Aguada Municipio, PR 32 km (20 mi) NNW of here earthquakes near Aguada Municipio
Isabela Municipio, PR 33 km (21 mi) WNW of here earthquakes near Isabela Municipio
Rincón Municipio, PR 34 km (21 mi) N of here earthquakes near Rincón Municipio
Moca Municipio, PR 37 km (23 mi) NW of here earthquakes near Moca Municipio
Quebradillas Municipio, PR 42 km (26 mi) WNW of here earthquakes near Quebradillas Municipio

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

Aftershocks so far

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

  1. 2.4 24 km NW of Rincón, Puerto Rico
  2. 3.2 63 km NW of San Antonio, Puerto Rico
  3. 2.5 7 km SSW of La Playa, Puerto Rico
  4. 3.1 66 km N of San Antonio, Puerto Rico
  5. 2.5 2 km SSW of La Playa, Puerto Rico
  6. 2.3 7 km NNE of Quebradillas, Puerto Rico
  7. 2.0 48 km NW of San Antonio, Puerto Rico
  8. 3.0 Mona Passage
  9. 3.0 47 km NW of Aguadilla, Puerto Rico
  10. 2.7 45 km WNW of Rincón, Puerto Rico
  11. 2.8 9 km NW of Caban, Puerto Rico
  12. 3.3 9 km NW of Caban, Puerto Rico
  13. 2.8 54 km NW of San Antonio, Puerto Rico
  14. 2.4 29 km N of Isabela, Puerto Rico
  15. 2.9 37 km WNW of Rincón, 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.