QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

22 km N of Tierras Nuevas Poniente, Puerto Rico

· 13 km deep · released about 38 lb of TNT

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10 km30 km60 km120 km N Barceloneta Municipio 23 kmManatí Municipio 24 kmVega Baja Municipio 25 kmVega Alta Municipio 30 kmDorado Municipio 32 kmArecibo Municipio 32 kmFlorida Municipio 34 kmToa Baja Municipio 39 kmMorovis 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
13 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 23 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2582 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 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 18.6646, -66.4856. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barceloneta Municipio, PR 23 km (14 mi) NNE of here earthquakes near Barceloneta Municipio
Manatí Municipio, PR 24 km (15 mi) N of here earthquakes near Manatí Municipio
Vega Baja Municipio, PR 25 km (16 mi) NNW of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 30 km (19 mi) NNW of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 32 km (20 mi) NW of here earthquakes near Dorado Municipio
Arecibo Municipio, PR 32 km (20 mi) NE of here earthquakes near Arecibo Municipio

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

Aftershocks so far

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

  1. 2.8 51 km N of Hatillo, Puerto Rico
  2. 2.7 51 km N of Hatillo, Puerto Rico
  3. 2.6 44 km N of Hatillo, Puerto Rico
  4. 1.8 16 km NNW of Camuy, Puerto Rico
  5. 2.6 48 km N of Arecibo, Puerto Rico
  6. 2.7 48 km N of Arecibo, Puerto Rico
  7. 2.7 58 km N of Arecibo, Puerto Rico
  8. 2.6 51 km N of Arecibo, Puerto Rico
  9. 2.6 37 km N of Hatillo, Puerto Rico
  10. 2.7 36 km NNE of Isabela, Puerto Rico
  11. 2.5 25 km NNE of Brenas, Puerto Rico
  12. 1.9 11 km N of Dorado, Puerto Rico
  13. 2.5 71 km N of Tierras Nuevas Poniente, Puerto Rico
  14. 2.4 66 km N of Tierras Nuevas Poniente, Puerto Rico
  15. 2.1 11 km NNE of Garrochales, 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 4.8 on 2017-08-18 — it released about 12,000 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.