QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

3 km E of Celada, Puerto Rico

· 103 km deep · released about 1,500 lb of TNT

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10 km30 km60 km120 km N Gurabo Municipio 5 kmJuncos Municipio 6 kmCanóvanas Municipio 8 kmTrujillo Alto Municipio 10 kmLas Piedras Municipio 12 kmCaguas Municipio 14 kmCarolina Municipio 14 kmSan Lorenzo Municipio 15 kmRío Grande Municipio 19 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 3.1 (md)
Depth
103 km below the surface
Felt
no reports yet
Nearest
Gurabo Municipio, 5 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1332 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 1,500 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 230,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,200× the energy of this one
  4. This earthquake M 3.1 about 1,500 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.6× more

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 18.2730, -65.9377. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gurabo Municipio, PR 5 km (3 mi) E of here earthquakes near Gurabo Municipio
Juncos Municipio, PR 6 km (4 mi) NNW of here earthquakes near Juncos Municipio
Canóvanas Municipio, PR 8 km (5 mi) SW of here earthquakes near Canóvanas Municipio
Trujillo Alto Municipio, PR 10 km (6 mi) SE of here earthquakes near Trujillo Alto Municipio
Las Piedras Municipio, PR 12 km (7 mi) NW of here earthquakes near Las Piedras Municipio
Caguas Municipio, PR 14 km (9 mi) ENE of here earthquakes near Caguas Municipio

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

Aftershocks so far

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

  1. 2.8 4 km SE of G. L. Garcia, Puerto Rico
  2. 2.9 0 km NNW of Cataño, Puerto Rico
  3. 3.1 2 km SE of Cayey, Puerto Rico
  4. 3.4 1 km W of Punta Santiago, Puerto Rico
  5. 2.9 0 km S of Vázquez, Puerto Rico
  6. 3.3 7 km NNE of Dorado, Puerto Rico
  7. 2.6 5 km SE of G. L. Garcia, Puerto Rico
  8. 2.2 3 km E of Bayamon, Puerto Rico
  9. 2.7 Puerto Rico region
  10. 2.9 1 km W of Punta Santiago, Puerto Rico
  11. 2.8 Puerto Rico region
  12. 3.2 10 km NNW of Levittown, Puerto Rico
  13. 2.9 9 km SSE of Bajandas, Puerto Rico
  14. 2.6 19 km SW of Esperanza, Puerto Rico
  15. 3.1 6 km ENE of San Juan, 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 160 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.