QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

11 km N of Arecibo, Puerto Rico

· 23 km deep · released about 390 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 16 kmArecibo Municipio 17 kmCamuy Municipio 20 kmBarceloneta Municipio 22 kmQuebradillas Municipio 24 kmFlorida Municipio 29 kmManatí Municipio 29 kmIsabela Municipio 31 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 2.7 (md)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 16 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1076 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 390 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 39,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 28,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 390 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 18.5732, -66.7350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 16 km (10 mi) NNE of here earthquakes near Hatillo Municipio
Arecibo Municipio, PR 17 km (10 mi) NNW of here earthquakes near Arecibo Municipio
Camuy Municipio, PR 20 km (12 mi) NE of here earthquakes near Camuy Municipio
Barceloneta Municipio, PR 22 km (14 mi) WNW of here earthquakes near Barceloneta Municipio
Quebradillas Municipio, PR 24 km (15 mi) ENE of here earthquakes near Quebradillas Municipio
Florida Municipio, PR 29 km (18 mi) NW of here earthquakes near Florida Municipio

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

Aftershocks so far

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

  1. 2.7 32 km N of Arecibo, Puerto Rico
  2. 3.1 7 km NNE of Utuado, Puerto Rico
  3. 2.1 4 km NW of Orocovis, Puerto Rico
  4. 3.2 2 km SSE of Coto Norte, Puerto Rico
  5. 2.6 4 km NW of Orocovis, Puerto Rico
  6. 3.0 12 km NNE of Isabela, Puerto Rico
  7. 1.7 7 km SSE of Lares, Puerto Rico
  8. 2.8 16 km N of Arecibo, Puerto Rico
  9. 2.8 12 km N of Yauco, Puerto Rico
  10. 2.8 5 km NW of Orocovis, Puerto Rico
  11. 2.7 3 km NW of Orocovis, Puerto Rico
  12. 3.5 19 km NNW of San Antonio, Puerto Rico
  13. 2.1 Puerto Rico region
  14. 2.4 Puerto Rico region
  15. 3.0 49 km N 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 310 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.