QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

12 km NE of Vieques, Puerto Rico

· 11 km deep · released about 47 lb of TNT

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10 km30 km60 km120 km N Río Grande Municipio 16 kmLuquillo Municipio 18 kmLoíza Municipio 21 kmFajardo Municipio 24 kmCanóvanas Municipio 25 kmCarolina Municipio 26 kmTrujillo Alto Municipio 33 kmCeiba Municipio 33 kmSan Juan Municipio 34 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
11 km below the surface
Felt
no reports yet
Nearest
Río Grande Municipio, 16 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2738 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 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 18.5200, -65.7621. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Río Grande Municipio, PR 16 km (10 mi) NNE of here earthquakes near Río Grande Municipio
Luquillo Municipio, PR 18 km (11 mi) NNW of here earthquakes near Luquillo Municipio
Loíza Municipio, PR 21 km (13 mi) ENE of here earthquakes near Loíza Municipio
Fajardo Municipio, PR 24 km (15 mi) NW of here earthquakes near Fajardo Municipio
Canóvanas Municipio, PR 25 km (15 mi) NNE of here earthquakes near Canóvanas Municipio
Carolina Municipio, PR 26 km (16 mi) ENE of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 2.3 39 km N of San Juan, Puerto Rico
  2. 2.6 10 km N of San Juan, Puerto Rico
  3. 1.9 37 km N of San Juan, Puerto Rico
  4. 2.8 43 km N of Suárez, Puerto Rico
  5. 2.7 3 km E of Ceiba, Puerto Rico
  6. 2.1 9 km NNW of Levittown, Puerto Rico
  7. 2.5 36 km NNE of Suárez, Puerto Rico
  8. 1.9 20 km NNE of Luquillo, Puerto Rico
  9. 2.1 2 km ENE of Celada, Puerto Rico
  10. 2.2 44 km NE of Luquillo, Puerto Rico
  11. 1.8 11 km NNW of San Juan, Puerto Rico
  12. 2.1 37 km NNW of Culebra, Puerto Rico
  13. 1.7 5 km E of San Juan, Puerto Rico
  14. 2.3 6 km NW of Trujillo Alto, Puerto Rico
  15. 2.4 42 km NNW of Culebra, 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.