QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

17 km SW of Stella, Puerto Rico

· 15 km deep · released about 49 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 19 kmAñasco Municipio 26 kmAguada Municipio 27 kmHormigueros Municipio 27 kmCabo Rojo Municipio 30 kmMoca Municipio 36 kmSan Germán Municipio 36 kmAguadilla Municipio 39 kmLas Marías Municipio 41 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
15 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 19 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3392 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 18.2018, -67.3616. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 19 km (12 mi) SW of here earthquakes near Rincón Municipio
Añasco Municipio, PR 26 km (16 mi) WSW of here earthquakes near Añasco Municipio
Aguada Municipio, PR 27 km (17 mi) SW of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 27 km (17 mi) WNW of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 30 km (18 mi) NW of here earthquakes near Cabo Rojo Municipio
Moca Municipio, PR 36 km (22 mi) WSW of here earthquakes near Moca Municipio

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

Aftershocks so far

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

  1. 1.9 3 km SE of La Parguera, Puerto Rico
  2. 2.6 10 km NW of Puerto Real, Puerto Rico
  3. 2.3 2 km NE of Hormigueros, Puerto Rico
  4. 1.6 4 km ESE of La Parguera, Puerto Rico
  5. 1.7 1 km SW of Cabo Rojo, Puerto Rico
  6. 2.7 27 km WNW of Rincón, Puerto Rico
  7. 1.8 5 km NNE of San Germán, Puerto Rico
  8. 2.9 5 km SW of Las Marías, Puerto Rico
  9. 1.9 Puerto Rico region
  10. 2.2 2 km SW of San Sebastián, Puerto Rico
  11. 2.8 4 km SW of Las Marías, Puerto Rico
  12. 1.8 11 km SSE of Pole Ojea, Puerto Rico
  13. 2.3 9 km SSE of Pole Ojea, Puerto Rico
  14. 1.8 8 km S of La Parguera, Puerto Rico
  15. 1.7 12 km SSW of La Parguera, 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.