QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

1 km SE of Piedra Gorda, Puerto Rico

· 8.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Camuy Municipio 3 kmQuebradillas Municipio 7 kmHatillo Municipio 9 kmSan Sebastián Municipio 14 kmIsabela Municipio 16 kmLares Municipio 16 kmArecibo Municipio 22 kmMoca Municipio 22 kmLas Marías Municipio 24 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
8.0 km below the surface
Felt
no reports yet
Nearest
Camuy Municipio, 3 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2815 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× 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 18.4248, -66.8801. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Camuy Municipio, PR 3 km (2 mi) SW of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 7 km (4 mi) SE of here earthquakes near Quebradillas Municipio
Hatillo Municipio, PR 9 km (5 mi) WSW of here earthquakes near Hatillo Municipio
San Sebastián Municipio, PR 14 km (9 mi) NE of here earthquakes near San Sebastián Municipio
Isabela Municipio, PR 16 km (10 mi) ESE of here earthquakes near Isabela Municipio
Lares Municipio, PR 16 km (10 mi) N of here earthquakes near Lares Municipio

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

Aftershocks so far

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

  1. 1.5 5 km NE of La Parguera, Puerto Rico
  2. 1.8 5 km NNE of Lluveras, Puerto Rico
  3. 2.4 7 km NE of Sabana Grande, Puerto Rico
  4. 1.9 0 km WNW of Fuig, Puerto Rico
  5. 1.6 2 km SE of Lajas, Puerto Rico
  6. 2.6 8 km NNW of Tierras Nuevas Poniente, Puerto Rico
  7. 1.9 1 km W of Fuig, Puerto Rico
  8. 2.6 Mona Passage
  9. 1.9 4 km NNE of Sabana Eneas, Puerto Rico
  10. 2.3 9 km N of Carrizales, Puerto Rico
  11. 2.4 26 km N of Hatillo, Puerto Rico
  12. 2.5 1 km NW of Lajas, Puerto Rico
  13. 2.6 15 km N of San Antonio, Puerto Rico
  14. 1.8 8 km SSW of Ciales, Puerto Rico
  15. 2.1 8 km NW of Camuy, 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.