QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

15 km N of Quebradillas, Puerto Rico

· 27 km deep · released about 44 lb of TNT

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10 km30 km60 km120 km N Quebradillas Municipio 16 kmIsabela Municipio 17 kmCamuy Municipio 20 kmHatillo Municipio 23 kmAguadilla Municipio 27 kmMoca Municipio 31 kmSan Sebastián Municipio 32 kmArecibo Municipio 33 kmLares Municipio 38 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
27 km below the surface
Felt
no reports yet
Nearest
Quebradillas Municipio, 16 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3012 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 44 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 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 18.6120, -66.9231. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Quebradillas Municipio, PR 16 km (10 mi) N of here earthquakes near Quebradillas Municipio
Isabela Municipio, PR 17 km (11 mi) NE of here earthquakes near Isabela Municipio
Camuy Municipio, PR 20 km (12 mi) NNW of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 23 km (14 mi) NW of here earthquakes near Hatillo Municipio
Aguadilla Municipio, PR 27 km (17 mi) ENE of here earthquakes near Aguadilla Municipio
Moca Municipio, PR 31 km (19 mi) NNE of here earthquakes near Moca Municipio

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

Aftershocks so far

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

  1. 1.7 2 km NNE of Mayagüez, Puerto Rico
  2. 1.9 9 km SSE of Lares, Puerto Rico
  3. 3.2 Puerto Rico region
  4. 2.4 5 km NW of Rincón, Puerto Rico
  5. 2.2 29 km NNE of Arecibo, Puerto Rico
  6. 2.5 11 km N of Carrizales, Puerto Rico
  7. 2.2 15 km NNE of Isabela, Puerto Rico
  8. 2.8 45 km N of Isabela, Puerto Rico
  9. 2.5 3 km ENE of Isabela, Puerto Rico
  10. 2.1 3 km WNW of Maricao, Puerto Rico
  11. 2.4 2 km ENE of Isabela, Puerto Rico
  12. 2.6 3 km NE of Quebradillas, Puerto Rico
  13. 2.5 41 km N of Isabela, Puerto Rico
  14. 2.0 4 km SSW of Añasco, Puerto Rico
  15. 1.9 6 km W of Las Marías, 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.