QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

30 km NW of Rincón, Puerto Rico

· 20 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 31 kmAguadilla Municipio 33 kmAguada Municipio 33 kmMoca Municipio 43 kmAñasco Municipio 44 kmIsabela Municipio 47 kmSan Sebastián Municipio 56 kmQuebradillas Municipio 56 kmHormigueros Municipio 57 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, 31 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2509 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 18.5330, -67.4555. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 31 km (19 mi) NW of here earthquakes near Rincón Municipio
Aguadilla Municipio, PR 33 km (21 mi) W of here earthquakes near Aguadilla Municipio
Aguada Municipio, PR 33 km (21 mi) WNW of here earthquakes near Aguada Municipio
Moca Municipio, PR 43 km (27 mi) WNW of here earthquakes near Moca Municipio
Añasco Municipio, PR 44 km (27 mi) NW of here earthquakes near Añasco Municipio
Isabela Municipio, PR 47 km (29 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

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

  1. 2.7 7 km SSW of Stella, Puerto Rico
  2. 2.7 24 km N of San Antonio, Puerto Rico
  3. 2.9 50 km NW of San Antonio, Puerto Rico
  4. 2.3 12 km NW of Puerto Real, Puerto Rico
  5. 1.8 12 km SW of Stella, Puerto Rico
  6. 2.4 18 km W of Rincón, Puerto Rico
  7. 2.8 41 km NW of Aguadilla, Puerto Rico
  8. 2.0 70 km NW of San Antonio, Puerto Rico
  9. 3.0 33 km WSW of Stella, Puerto Rico
  10. 3.0 51 km NW of San Antonio, Puerto Rico
  11. 2.6 43 km NNW of San Antonio, Puerto Rico
  12. 2.1 10 km W of Rincón, Puerto Rico
  13. 2.5 12 km WNW of San Antonio, Puerto Rico
  14. 2.5 55 km NNW of San Antonio, Puerto Rico
  15. 2.7 33 km N of Isabela, 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 3,000 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.