QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

22 km N of Arecibo, Puerto Rico

· 18 km deep · released about 74 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 28 kmArecibo Municipio 28 kmBarceloneta Municipio 29 kmCamuy Municipio 30 kmQuebradillas Municipio 32 kmManatí Municipio 35 kmIsabela Municipio 38 kmFlorida Municipio 38 kmVega Baja Municipio 42 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 2.3 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 28 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2735 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 74 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 74 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 18.6780, -66.7220. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 28 km (17 mi) NNE of here earthquakes near Hatillo Municipio
Arecibo Municipio, PR 28 km (17 mi) N of here earthquakes near Arecibo Municipio
Barceloneta Municipio, PR 29 km (18 mi) NW of here earthquakes near Barceloneta Municipio
Camuy Municipio, PR 30 km (19 mi) NNE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 32 km (20 mi) NE of here earthquakes near Quebradillas Municipio
Manatí Municipio, PR 35 km (22 mi) NW of here earthquakes near Manatí Municipio

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

Aftershocks so far

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

  1. 2.8 40 km N of San Antonio, Puerto Rico
  2. 1.6 30 km N of Carrizales, Puerto Rico
  3. 2.3 38 km N of San Antonio, Puerto Rico
  4. 2.4 7 km NNE of Carrizales, Puerto Rico
  5. 2.2 7 km NNE of Isabela, Puerto Rico
  6. 2.2 26 km NNW of Brenas, Puerto Rico
  7. 2.8 0 km NNW of Tierras Nuevas Poniente, Puerto Rico
  8. 2.4 31 km N of Tierras Nuevas Poniente, Puerto Rico
  9. 3.0 59 km N of Arecibo, Puerto Rico
  10. 2.6 13 km N of Animas, Puerto Rico
  11. 1.9 2 km S of Barahona, Puerto Rico
  12. 2.6 23 km NNE of Carrizales, Puerto Rico
  13. 2.8 12 km N of Carrizales, Puerto Rico
  14. 2.5 45 km N of Brenas, Puerto Rico
  15. 1.9 4 km W of Cayuco, 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 1,600 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.