QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

10 km N of Hatillo, Puerto Rico

· 75 km deep · released about 1,500 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 16 kmCamuy Municipio 16 kmQuebradillas Municipio 17 kmArecibo Municipio 22 kmIsabela Municipio 24 kmBarceloneta Municipio 30 kmSan Sebastián Municipio 32 kmLares Municipio 34 kmFlorida Municipio 36 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
75 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 16 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 99 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 1,500 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 6.7 220,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,900× the energy of this one
  4. This earthquake M 3.1 about 1,500 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.6× 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 18.5823, -66.8155. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 16 km (10 mi) N of here earthquakes near Hatillo Municipio
Camuy Municipio, PR 16 km (10 mi) NNE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 17 km (11 mi) NE of here earthquakes near Quebradillas Municipio
Arecibo Municipio, PR 22 km (14 mi) NW of here earthquakes near Arecibo Municipio
Isabela Municipio, PR 24 km (15 mi) ENE of here earthquakes near Isabela Municipio
Barceloneta Municipio, PR 30 km (19 mi) WNW of here earthquakes near Barceloneta Municipio

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

Aftershocks so far

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

  1. 2.2 12 km SSE of Lares, Puerto Rico
  2. 3.1 15 km N of Hatillo, Puerto Rico
  3. 2.9 12 km NNE of Tierras Nuevas Poniente, Puerto Rico
  4. 2.7 30 km N of Tierras Nuevas Poniente, Puerto Rico
  5. 2.7 9 km WNW of San Antonio, Puerto Rico
  6. 2.7 17 km NW of Aguadilla, Puerto Rico
  7. 2.3 4 km N of Adjuntas, Puerto Rico
  8. 2.6 5 km SSW of Utuado, Puerto Rico
  9. 2.9 2 km NW of Sabana, Puerto Rico
  10. 2.3 9 km SSE of Lares, Puerto Rico
  11. 2.5 21 km NNW of Camuy, Puerto Rico
  12. 2.5 6 km ESE of Maricao, Puerto Rico
  13. 2.1 2 km WSW of Maricao, Puerto Rico
  14. 2.8 13 km N of Hatillo, Puerto Rico
  15. 2.2 3 km N of Las Marias, 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 4.2 on 2022-12-30 — it released about 36 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.