QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

5 km N of Levittown, Puerto Rico

· 81 km deep · released about 990 lb of TNT

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10 km30 km60 km120 km N Toa Baja Municipio 5 kmCataño Municipio 6 kmDorado Municipio 10 kmSan Juan Municipio 14 kmBayamón Municipio 16 kmToa Alta Municipio 16 kmGuaynabo Municipio 18 kmVega Alta Municipio 18 kmVega Baja 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 3.0 (md)
Depth
81 km below the surface
Felt
no reports yet
Nearest
Toa Baja Municipio, 5 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1562 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 990 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 340,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 990 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 18.4947, -66.1742. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Toa Baja Municipio, PR 5 km (3 mi) NNE of here earthquakes near Toa Baja Municipio
Cataño Municipio, PR 6 km (4 mi) NNW of here earthquakes near Cataño Municipio
Dorado Municipio, PR 10 km (6 mi) ENE of here earthquakes near Dorado Municipio
San Juan Municipio, PR 14 km (9 mi) NW of here earthquakes near San Juan Municipio
Bayamón Municipio, PR 16 km (10 mi) N of here earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 16 km (10 mi) NNE of here earthquakes near Toa Alta Municipio

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

Aftershocks so far

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

  1. 2.5 7 km ENE of Jayuya, Puerto Rico
  2. 3.0 11 km NNW of Brenas, Puerto Rico
  3. 2.8 5 km NNW of Dorado, Puerto Rico
  4. 2.2 3 km N of Orocovis, Puerto Rico
  5. 3.6 1 km NNW of San José, Puerto Rico
  6. 3.0 3 km ESE of Cayey, Puerto Rico
  7. 3.0 3 km E of Cayey, Puerto Rico
  8. 1.8 2 km SW of G. L. Garcia, Puerto Rico
  9. 2.7 4 km SE of Morovis, Puerto Rico
  10. 3.8 5 km ENE of San Juan, Puerto Rico
  11. 2.2 Puerto Rico region
  12. 2.6 2 km ENE of Bayamon, Puerto Rico
  13. 3.3 1 km S of Comerío, Puerto Rico
  14. 3.2 2 km ESE of Mucarabones, Puerto Rico
  15. 3.2 17 km N of Tierras Nuevas Poniente, 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 4.4 on 2018-12-09 — it released about 120 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.