QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

3 km W of Rafael Capo, Puerto Rico

· 13 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 4 kmCamuy Municipio 6 kmQuebradillas Municipio 13 kmArecibo Municipio 15 kmLares Municipio 16 kmSan Sebastián Municipio 18 kmUtuado Municipio 20 kmIsabela Municipio 22 kmAdjuntas Municipio 26 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 1.8 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 4 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2813 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 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 18.4101, -66.8183. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hatillo Municipio, PR 4 km (3 mi) SSW of here earthquakes near Hatillo Municipio
Camuy Municipio, PR 6 km (4 mi) SE of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 13 km (8 mi) ESE of here earthquakes near Quebradillas Municipio
Arecibo Municipio, PR 15 km (10 mi) W of here earthquakes near Arecibo Municipio
Lares Municipio, PR 16 km (10 mi) NNE of here earthquakes near Lares Municipio
San Sebastián Municipio, PR 18 km (11 mi) ENE of here earthquakes near San Sebastián Municipio

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

Aftershocks so far

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

  1. 2.3 6 km WSW of Las Marías, Puerto Rico
  2. 2.3 6 km NE of Villalba, Puerto Rico
  3. 1.5 5 km NE of La Parguera, Puerto Rico
  4. 1.8 5 km NNE of Lluveras, Puerto Rico
  5. 2.4 7 km NE of Sabana Grande, Puerto Rico
  6. 1.9 0 km WNW of Fuig, Puerto Rico
  7. 1.6 2 km SE of Lajas, Puerto Rico
  8. 2.6 8 km NNW of Tierras Nuevas Poniente, Puerto Rico
  9. 1.9 1 km W of Fuig, Puerto Rico
  10. 1.9 4 km NNE of Sabana Eneas, Puerto Rico
  11. 2.3 9 km N of Carrizales, Puerto Rico
  12. 2.4 26 km N of Hatillo, Puerto Rico
  13. 2.5 1 km NW of Lajas, Puerto Rico
  14. 2.6 15 km N of San Antonio, Puerto Rico
  15. 2.0 2 km WSW of Tallaboa, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.