QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

36 km W of Rincón, Puerto Rico

· 20 km deep · released about 40 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 36 kmMayagüez Municipio 43 kmAguada Municipio 43 kmAñasco Municipio 49 kmAguadilla Municipio 50 kmMoca Municipio 54 kmHormigueros Municipio 56 kmCabo Rojo Municipio 58 kmIsabela Municipio 63 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
20 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 36 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3347 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 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 18.3453, -67.5928. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 36 km (22 mi) W of here earthquakes near Rincón Municipio
Mayagüez Municipio, PR 43 km (26 mi) NE of here earthquakes near Mayagüez Municipio
Aguada Municipio, PR 43 km (27 mi) W of here earthquakes near Aguada Municipio
Añasco Municipio, PR 49 km (31 mi) W of here earthquakes near Añasco Municipio
Aguadilla Municipio, PR 50 km (31 mi) WSW of here earthquakes near Aguadilla Municipio
Moca Municipio, PR 54 km (34 mi) W of here earthquakes near Moca Municipio

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

Aftershocks so far

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

  1. 2.1 17 km SW of Stella, Puerto Rico
  2. 2.6 7 km WNW of Rincón, Puerto Rico
  3. 2.3 22 km SW of Stella, Puerto Rico
  4. 2.5 40 km W of Rincón, Puerto Rico
  5. 1.9 24 km SW of Stella, Puerto Rico
  6. 1.9 13 km WNW of Puerto Real, Puerto Rico
  7. 2.0 10 km NW of Puerto Real, Puerto Rico
  8. 1.6 6 km WNW of Puerto Real, Puerto Rico
  9. 3.2 4 km NW of Mayagüez, Puerto Rico
  10. 2.1 1 km SSE of Stella, Puerto Rico
  11. 1.9 Mona Passage
  12. 2.0 16 km NW of Puerto Real, Puerto Rico
  13. 1.9 16 km SW of Stella, Puerto Rico
  14. 2.9 38 km WSW of Stella, Puerto Rico
  15. 2.3 7 km NNW of Puerto Real, 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.