QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

5 km WNW of Aguas Buenas, Puerto Rico

· 54 km deep · released about 25 lb of TNT

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10 km30 km60 km120 km N Aguas Buenas Municipio 4 kmBayamón Municipio 8 kmGuaynabo Municipio 8 kmComerío Municipio 10 kmNaranjito Municipio 11 kmCidra Municipio 12 kmCaguas Municipio 13 kmToa Alta Municipio 13 kmTrujillo Alto Municipio 16 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 1.9 (md)
Depth
54 km below the surface
Felt
no reports yet
Nearest
Aguas Buenas Municipio, 4 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2621 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 18.2840, -66.1496. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguas Buenas Municipio, PR 4 km (2 mi) NW of here earthquakes near Aguas Buenas Municipio
Bayamón Municipio, PR 8 km (5 mi) SSE of here earthquakes near Bayamón Municipio
Guaynabo Municipio, PR 8 km (5 mi) SSW of here earthquakes near Guaynabo Municipio
Comerío Municipio, PR 10 km (6 mi) NE of here earthquakes near Comerío Municipio
Naranjito Municipio, PR 11 km (7 mi) E of here earthquakes near Naranjito Municipio
Cidra Municipio, PR 12 km (8 mi) N of here earthquakes near Cidra Municipio

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

Aftershocks so far

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

  1. 2.8 2 km ESE of Levittown, Puerto Rico
  2. 2.2 1 km S of Río Cañas Abajo, Puerto Rico
  3. 2.5 1 km S of Cataño, Puerto Rico
  4. 2.0 6 km S of Caguas, Puerto Rico
  5. 1.8 2 km WNW of Humacao, Puerto Rico
  6. 1.9 7 km SSW of Arroyo, Puerto Rico
  7. 2.4 1 km WNW of Pájaros, Puerto Rico
  8. 2.0 4 km NNE of Levittown, Puerto Rico
  9. 2.6 2 km ESE of Mucarabones, Puerto Rico
  10. 1.8 7 km SSW of Arroyo, Puerto Rico
  11. 1.5 6 km SSW of Arroyo, Puerto Rico
  12. 1.6 6 km SSW of Arroyo, Puerto Rico
  13. 2.5 7 km SSW of Arroyo, Puerto Rico
  14. 1.5 8 km S of Salinas, Puerto Rico
  15. 1.8 9 km ENE of Jayuya, 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 9,400 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.