QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

15 km N of Carrizales, Puerto Rico

· 13 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 20 kmCamuy Municipio 21 kmQuebradillas Municipio 22 kmArecibo Municipio 24 kmIsabela Municipio 28 kmBarceloneta Municipio 29 kmFlorida Municipio 36 kmManatí Municipio 36 kmSan Sebastián Municipio 37 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 3.1 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 20 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1089 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 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 260,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,200× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 18.6178, -66.7872. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 20 km (12 mi) N of here earthquakes near Hatillo Municipio
Camuy Municipio, PR 21 km (13 mi) NNE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 22 km (14 mi) NE of here earthquakes near Quebradillas Municipio
Arecibo Municipio, PR 24 km (15 mi) NNW of here earthquakes near Arecibo Municipio
Isabela Municipio, PR 28 km (17 mi) ENE of here earthquakes near Isabela Municipio
Barceloneta Municipio, PR 29 km (18 mi) NW of here earthquakes near Barceloneta 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. 3.0 12 km NNE of Isabela, Puerto Rico
  2. 1.7 7 km SSE of Lares, Puerto Rico
  3. 2.8 16 km N of Arecibo, Puerto Rico
  4. 3.5 19 km NNW of San Antonio, Puerto Rico
  5. 3.0 21 km NNE of Isabela, Puerto Rico
  6. 2.7 14 km NE of Arecibo, Puerto Rico
  7. 3.3 49 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 2.6 4 km NNE of Carrizales, Puerto Rico
  9. 2.5 17 km NNW of Brenas, Puerto Rico
  10. 3.2 Puerto Rico region
  11. 2.8 26 km NNE of Isabela, Puerto Rico
  12. 3.5 3 km WSW of Manatí, Puerto Rico
  13. 2.9 35 km N of Carrizales, Puerto Rico
  14. 2.5 4 km WNW of Adjuntas, Puerto Rico
  15. 2.8 20 km N of Carrizales, 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 92 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.