QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7md

Puerto Rico region

· 110 km deep · released about 4.7 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vega Baja Municipio 5 kmVega Alta Municipio 10 kmManatí Municipio 11 kmDorado Municipio 15 kmBarceloneta Municipio 17 kmMorovis Municipio 21 kmFlorida Municipio 22 kmToa Alta Municipio 23 kmToa Baja Municipio 23 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 3.7 (md)
Depth
110 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Vega Baja Municipio, 5 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1316 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 4.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 36,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,100× the energy of this one
  4. This earthquake M 3.7 about 4.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 9.8× more

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 18.5025, -66.4046. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Baja Municipio, PR 5 km (3 mi) N of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 10 km (6 mi) NW of here earthquakes near Vega Alta Municipio
Manatí Municipio, PR 11 km (7 mi) NE of here earthquakes near Manatí Municipio
Dorado Municipio, PR 15 km (10 mi) WNW of here earthquakes near Dorado Municipio
Barceloneta Municipio, PR 17 km (10 mi) ENE of here earthquakes near Barceloneta Municipio
Morovis Municipio, PR 21 km (13 mi) N of here earthquakes near Morovis Municipio

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

Aftershocks so far

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

  1. 2.1 6 km NE of Orocovis, Puerto Rico
  2. 2.8 10 km NNE of Carrizales, Puerto Rico
  3. 3.5 12 km NNE of Arecibo, Puerto Rico
  4. 3.2 3 km NNW of San Juan, Puerto Rico
  5. 3.1 5 km N of Garrochales, Puerto Rico
  6. 2.7 Puerto Rico region
  7. 3.3 47 km N of Arecibo, Puerto Rico
  8. 3.4 Puerto Rico region
  9. 3.6 11 km NNE of Hatillo, Puerto Rico
  10. 3.7 Puerto Rico region
  11. 2.9 Puerto Rico region
  12. 2.2 3 km ENE of Carrizales, Puerto Rico
  13. 2.6 2 km NNE of Orocovis, Puerto Rico
  14. 2.6 24 km NNE of Dorado, Puerto Rico
  15. 2.8 3 km W of Miranda, 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 4.4 on 2018-12-09 — it released about 13 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.