QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

1 km NW of Aguas Buenas, Puerto Rico

· 13 km deep · released about 16 lb of TNT

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10 km30 km60 km120 km N Aguas Buenas Municipio 2 kmGuaynabo Municipio 9 kmCaguas Municipio 9 kmBayamón Municipio 11 kmCidra Municipio 12 kmComerío Municipio 12 kmTrujillo Alto Municipio 14 kmGurabo Municipio 14 kmNaranjito Municipio 15 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
Aguas Buenas Municipio, 2 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2769 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 16 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 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 18.2675, -66.1131. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguas Buenas Municipio, PR 2 km (1 mi) NE of here earthquakes near Aguas Buenas Municipio
Guaynabo Municipio, PR 9 km (5 mi) S of here earthquakes near Guaynabo Municipio
Caguas Municipio, PR 9 km (6 mi) NW of here earthquakes near Caguas Municipio
Bayamón Municipio, PR 11 km (7 mi) SSE of here earthquakes near Bayamón Municipio
Cidra Municipio, PR 12 km (7 mi) NNE of here earthquakes near Cidra Municipio
Comerío Municipio, PR 12 km (8 mi) ENE of here earthquakes near Comerío Municipio

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

Aftershocks so far

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

  1. 1.7 0 km NNW of Jobos, Puerto Rico
  2. 1.6 2 km E of Jobos, Puerto Rico
  3. 1.7 3 km SE of Jauca, Puerto Rico
  4. 1.7 8 km SSW of Arroyo, Puerto Rico
  5. 1.7 2 km N of Jobos, Puerto Rico
  6. 1.9 10 km SSE of Arroyo, Puerto Rico
  7. 1.6 1 km ENE of Jobos, Puerto Rico
  8. 1.7 1 km SSW of Jobos, Puerto Rico
  9. 1.7 1 km NE of Jobos, Puerto Rico
  10. 1.6 0 km E of Jobos, Puerto Rico
  11. 2.0 0 km ESE of Jobos, Puerto Rico
  12. 1.8 1 km E of Jobos, Puerto Rico
  13. 1.6 3 km E of La Plena, Puerto Rico
  14. 1.6 3 km E of La Plena, Puerto Rico
  15. 2.3 0 km SW of Jobos, 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 15,000 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.