QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

12 km NNE of Arecibo, Puerto Rico

· 22 km deep · released about 1,100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Arecibo Municipio 16 kmBarceloneta Municipio 16 kmHatillo Municipio 20 kmManatí Municipio 24 kmCamuy Municipio 25 kmFlorida Municipio 25 kmQuebradillas Municipio 30 kmVega Baja Municipio 32 kmUtuado Municipio 34 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 3.0 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Arecibo Municipio, 16 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 509 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 1,100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 310,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,800× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 18.5733, -66.6702. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Arecibo Municipio, PR 16 km (10 mi) N of here earthquakes near Arecibo Municipio
Barceloneta Municipio, PR 16 km (10 mi) NW of here earthquakes near Barceloneta Municipio
Hatillo Municipio, PR 20 km (12 mi) NE of here earthquakes near Hatillo Municipio
Manatí Municipio, PR 24 km (15 mi) NW of here earthquakes near Manatí Municipio
Camuy Municipio, PR 25 km (15 mi) NE of here earthquakes near Camuy Municipio
Florida Municipio, PR 25 km (16 mi) NNW of here earthquakes near Florida 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. 2.9 20 km N of San Antonio, Puerto Rico
  2. 3.0 26 km N of Hatillo, Puerto Rico
  3. 3.0 12 km N of San Antonio, Puerto Rico
  4. 3.0 4 km NW of Orocovis, Puerto Rico
  5. 2.8 19 km N of Arecibo, Puerto Rico
  6. 2.6 2 km WNW of Piedra Gorda, Puerto Rico
  7. 3.0 2 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 2.1 2 km NE of Jayuya, Puerto Rico
  9. 3.4 24 km N of Tierras Nuevas Poniente, Puerto Rico
  10. 3.2 23 km N of Isabela, Puerto Rico
  11. 3.1 1 km S of Campanilla, Puerto Rico
  12. 3.0 5 km NNW of Dorado, Puerto Rico
  13. 2.8 47 km N of Brenas, Puerto Rico
  14. 2.8 25 km N of Tierras Nuevas Poniente, Puerto Rico
  15. 2.7 27 km NNW of Brenas, 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 110 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.