QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1Md

2 km E of Jauca, Puerto Rico

· 7.0 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 5 kmSalinas Municipio 8 kmCoamo Municipio 16 kmJuana Díaz Municipio 16 kmAibonito Municipio 20 kmGuayama Municipio 22 kmVillalba Municipio 23 kmCayey Municipio 25 kmBarranquitas Municipio 26 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
7.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 5 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3806 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 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× 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 43 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 17.9652, -66.3411. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 5 km (3 mi) ENE of here earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 8 km (5 mi) W of here earthquakes near Salinas Municipio
Coamo Municipio, PR 16 km (10 mi) S of here earthquakes near Coamo Municipio
Juana Díaz Municipio, PR 16 km (10 mi) ESE of here earthquakes near Juana Díaz Municipio
Aibonito Municipio, PR 20 km (12 mi) SSW of here earthquakes near Aibonito Municipio
Guayama Municipio, PR 22 km (13 mi) W of here earthquakes near Guayama Municipio

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

Aftershocks so far

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

  1. 2.1 14 km S of Ponce, Puerto Rico
  2. 2.1 8 km E of Jayuya, Puerto Rico
  3. 2.1 18 km S of Tallaboa, Puerto Rico
  4. 3.1 24 km SSE of Arroyo, Puerto Rico
  5. 1.9 3 km SSE of Villalba, Puerto Rico
  6. 2.0 7 km S of Central Aguirre, Puerto Rico
  7. 2.2 19 km S of Ponce, Puerto Rico
  8. 2.5 16 km SSE of Tallaboa, Puerto Rico
  9. 2.1 16 km S of Ponce, Puerto Rico
  10. 2.7 0 km SSW of Miranda, Puerto Rico
  11. 2.2 5 km WNW of Palomas, Puerto Rico
  12. 1.8 Puerto Rico region
  13. 2.2 17 km S of Ponce, Puerto Rico
  14. 2.2 16 km S of Ponce, Puerto Rico
  15. 2.2 16 km S of Ponce, 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.