QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

16 km N of Tierras Nuevas Poniente, Puerto Rico

· 77 km deep · released about 510 lb of TNT

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10 km30 km60 km120 km N Barceloneta Municipio 17 kmManatí Municipio 18 kmVega Baja Municipio 19 kmVega Alta Municipio 25 kmDorado Municipio 28 kmArecibo Municipio 28 kmFlorida Municipio 28 kmMorovis Municipio 33 kmToa Baja Municipio 35 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 2.8 (md)
Depth
77 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 17 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 679 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 510 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 21,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 510 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 18.6102, -66.4842. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barceloneta Municipio, PR 17 km (11 mi) NNE of here earthquakes near Barceloneta Municipio
Manatí Municipio, PR 18 km (11 mi) N of here earthquakes near Manatí Municipio
Vega Baja Municipio, PR 19 km (12 mi) NNW of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 25 km (15 mi) NW of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 28 km (17 mi) WNW of here earthquakes near Dorado Municipio
Arecibo Municipio, PR 28 km (17 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

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

  1. 2.7 10 km NNE of Arecibo, Puerto Rico
  2. 3.0 12 km NNE of Arecibo, Puerto Rico
  3. 2.7 19 km N of Camuy, Puerto Rico
  4. 3.0 9 km N of Hatillo, Puerto Rico
  5. 2.7 16 km NNW of Garrochales, Puerto Rico
  6. 3.0 1 km NNW of Ingenio, Puerto Rico
  7. 3.2 9 km NNE of San Juan, Puerto Rico
  8. 3.1 1 km S of Toa Alta, Puerto Rico
  9. 3.0 34 km N of Tierras Nuevas Poniente, Puerto Rico
  10. 2.9 19 km NNE of Carrizales, Puerto Rico
  11. 3.0 20 km N of Hatillo, Puerto Rico
  12. 2.8 9 km N of Carrizales, Puerto Rico
  13. 2.3 5 km NW of Orocovis, Puerto Rico
  14. 2.0 5 km NNW of Orocovis, Puerto Rico
  15. 2.4 3 km NW of Orocovis, 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 930 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.