QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

23 km N of Hatillo, Puerto Rico

· 20 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 28 kmCamuy Municipio 29 kmQuebradillas Municipio 29 kmArecibo Municipio 32 kmIsabela Municipio 33 kmBarceloneta Municipio 36 kmManatí Municipio 43 kmAguadilla Municipio 43 kmSan Sebastián Municipio 44 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
20 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 28 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2857 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 320 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 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 18.6970, -66.8021. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 28 km (18 mi) N of here earthquakes near Hatillo Municipio
Camuy Municipio, PR 29 km (18 mi) NNE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 29 km (18 mi) NNE of here earthquakes near Quebradillas Municipio
Arecibo Municipio, PR 32 km (20 mi) NNW of here earthquakes near Arecibo Municipio
Isabela Municipio, PR 33 km (20 mi) NE of here earthquakes near Isabela Municipio
Barceloneta Municipio, PR 36 km (22 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

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

  1. 2.1 21 km NNE of Isabela, Puerto Rico
  2. 2.5 6 km N of Isabela, Puerto Rico
  3. 2.1 15 km NNE of Isabela, Puerto Rico
  4. 2.5 51 km N of Hatillo, Puerto Rico
  5. 2.7 35 km N of San Antonio, Puerto Rico
  6. 2.7 49 km NNE of Isabela, Puerto Rico
  7. 2.6 Puerto Rico region
  8. 2.5 Puerto Rico region
  9. 2.8 Puerto Rico region
  10. 2.9 61 km N of Tierras Nuevas Poniente, Puerto Rico
  11. 3.2 66 km N of Arecibo, Puerto Rico
  12. 2.6 56 km N of San Antonio, Puerto Rico
  13. 2.5 3 km E of Moca, Puerto Rico
  14. 2.3 23 km NNE of Isabela, Puerto Rico
  15. 2.9 65 km NNE of Arecibo, 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 4.7 on 2017-07-17 — it released about 930 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.