QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

12 km NNW of Rincón, Puerto Rico

· 10 km deep · released about 49 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 13 kmAguada Municipio 14 kmAguadilla Municipio 16 kmMoca Municipio 24 kmAñasco Municipio 25 kmIsabela Municipio 30 kmSan Sebastián Municipio 37 kmQuebradillas Municipio 39 kmHormigueros Municipio 39 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
10 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 13 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2589 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 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 18.4450, -67.2938. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 13 km (8 mi) NNW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 14 km (9 mi) NW of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 16 km (10 mi) WSW of here earthquakes near Aguadilla Municipio
Moca Municipio, PR 24 km (15 mi) WNW of here earthquakes near Moca Municipio
Añasco Municipio, PR 25 km (15 mi) NW of here earthquakes near Añasco Municipio
Isabela Municipio, PR 30 km (19 mi) W of here earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.5 45 km NW of San Antonio, Puerto Rico
  2. 2.2 17 km WNW of Puerto Real, Puerto Rico
  3. 2.4 22 km NW of Rincón, Puerto Rico
  4. 2.0 25 km NNE of Isabela, Puerto Rico
  5. 2.2 18 km NW of Puerto Real, Puerto Rico
  6. 2.0 4 km ENE of Mayagüez, Puerto Rico
  7. 2.7 23 km W of Puerto Real, Puerto Rico
  8. 2.4 32 km NW of Rincón, Puerto Rico
  9. 2.6 41 km NW of San Antonio, Puerto Rico
  10. 2.0 18 km WNW of Puerto Real, Puerto Rico
  11. 2.0 30 km WNW of San Antonio, Puerto Rico
  12. 1.8 6 km NE of San Sebastián, Puerto Rico
  13. 2.1 43 km WNW of Rincón, Puerto Rico
  14. 2.1 9 km NNE of Isabela, Puerto Rico
  15. 4.3 21 km WNW 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2017-10-01 — it released about 2,500 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.