QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

10 km ESE of Aguas Claras, Puerto Rico

· 20 km deep · released about 14 lb of TNT

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10 km30 km60 km120 km N Ceiba Municipio 8 kmVieques Municipio 17 kmNaguabo Municipio 18 kmFajardo Municipio 21 kmLuquillo Municipio 24 kmHumacao Municipio 24 kmRío Grande Municipio 31 kmCulebra Municipio 31 kmLas Piedras Municipio 32 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
20 km below the surface
Felt
no reports yet
Nearest
Ceiba Municipio, 8 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3381 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 14 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 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 18.2026, -65.5703. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ceiba Municipio, PR 8 km (5 mi) SE of here earthquakes near Ceiba Municipio
Vieques Municipio, PR 17 km (11 mi) WNW of here earthquakes near Vieques Municipio
Naguabo Municipio, PR 18 km (11 mi) E of here earthquakes near Naguabo Municipio
Fajardo Municipio, PR 21 km (13 mi) S of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 24 km (15 mi) SE of here earthquakes near Luquillo Municipio
Humacao Municipio, PR 24 km (15 mi) ENE of here earthquakes near Humacao Municipio

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

Aftershocks so far

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

  1. 2.5 18 km NNE of Playa Fortuna, Puerto Rico
  2. 1.8 7 km SE of Culebra, Puerto Rico
  3. 2.6 22 km NNE of Playa Fortuna, Puerto Rico
  4. 2.6 15 km S of Esperanza, Puerto Rico
  5. 2.4 24 km NNE of Luquillo, Puerto Rico
  6. 2.0 29 km NNE of Luquillo, Puerto Rico
  7. 2.1 16 km S of Esperanza, Puerto Rico
  8. 2.4 10 km SE of Esperanza, Puerto Rico
  9. 2.8 15 km SSE of Esperanza, Puerto Rico
  10. 3.2 Puerto Rico region
  11. 1.7 20 km NNE of Luquillo, Puerto Rico
  12. 2.5 25 km NNE of Luquillo, Puerto Rico
  13. 2.9 16 km SSE of Esperanza, Puerto Rico
  14. 1.9 21 km WSW of Esperanza, Puerto Rico
  15. 3.1 22 km SE of El Negro, 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 4.6 on 2016-12-05 — it released about 17,000 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.