QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

9 km N of Carrizales, Puerto Rico

· 15 km deep · released about 450 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 14 kmCamuy Municipio 16 kmArecibo Municipio 18 kmQuebradillas Municipio 19 kmBarceloneta Municipio 25 kmIsabela Municipio 27 kmFlorida Municipio 32 kmManatí Municipio 33 kmSan Sebastián Municipio 33 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 2.8 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 14 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 610 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 450 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 34,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 24,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 450 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 18.5668, -66.7767. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 14 km (9 mi) N of here earthquakes near Hatillo Municipio
Camuy Municipio, PR 16 km (10 mi) NE of here earthquakes near Camuy Municipio
Arecibo Municipio, PR 18 km (11 mi) NW of here earthquakes near Arecibo Municipio
Quebradillas Municipio, PR 19 km (12 mi) NE of here earthquakes near Quebradillas Municipio
Barceloneta Municipio, PR 25 km (16 mi) WNW of here earthquakes near Barceloneta Municipio
Isabela Municipio, PR 27 km (17 mi) ENE of here earthquakes near Isabela 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. 3.0 46 km NNE of Isabela, Puerto Rico
  2. 2.4 8 km NE of Sabana Grande, Puerto Rico
  3. 3.1 48 km N of Tierras Nuevas Poniente, Puerto Rico
  4. 2.9 11 km NNE of Carrizales, Puerto Rico
  5. 3.0 24 km N of Isabela, Puerto Rico
  6. 2.7 22 km N of Arecibo, Puerto Rico
  7. 2.2 8 km SSE of Lares, Puerto Rico
  8. 2.9 9 km NNW of Brenas, Puerto Rico
  9. 2.5 18 km N of Camuy, Puerto Rico
  10. 2.7 4 km NW of Quebradillas, Puerto Rico
  11. 2.2 1 km S of Maricao, Puerto Rico
  12. 2.3 8 km NE of Sabana Grande, Puerto Rico
  13. 2.5 1 km W of Las Marías, Puerto Rico
  14. 2.3 17 km NNW of Camuy, Puerto Rico
  15. 2.9 20 km N of Hatillo, 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 270 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.