QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

1 km S of Campanilla, Puerto Rico

· 119 km deep · released about 1,400 lb of TNT

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10 km30 km60 km120 km N Toa Alta Municipio 5 kmToa Baja Municipio 7 kmDorado Municipio 8 kmBayamón Municipio 10 kmCataño Municipio 10 kmVega Alta Municipio 11 kmNaranjito Municipio 13 kmCorozal Municipio 15 kmGuaynabo 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 3.1 (md)
Depth
119 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Toa Alta Municipio, 5 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 518 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1,400 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 6.7 240,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,700× the energy of this one
  4. This earthquake M 3.1 about 1,400 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.5× 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 18.4052, -66.2387. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Toa Alta Municipio, PR 5 km (3 mi) N of here earthquakes near Toa Alta Municipio
Toa Baja Municipio, PR 7 km (5 mi) SW of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 8 km (5 mi) SSE of here earthquakes near Dorado Municipio
Bayamón Municipio, PR 10 km (6 mi) NW of here earthquakes near Bayamón Municipio
Cataño Municipio, PR 10 km (6 mi) WSW of here earthquakes near Cataño Municipio
Vega Alta Municipio, PR 11 km (7 mi) ESE of here earthquakes near Vega Alta Municipio

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

Aftershocks so far

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

  1. 2.0 2 km SSW of Las Ochenta, Puerto Rico
  2. 3.6 1 km ESE of Carolina, Puerto Rico
  3. 2.8 4 km N of San Antonio, Puerto Rico
  4. 2.3 3 km N of Playita Cortada, Puerto Rico
  5. 3.0 34 km N of Brenas, Puerto Rico
  6. 2.1 1 km ENE of Jauca, Puerto Rico
  7. 2.3 2 km ENE of Jauca, Puerto Rico
  8. 2.6 1 km WNW of Parcelas Peñuelas, Puerto Rico
  9. 2.5 1 km WSW of Parcelas Peñuelas, Puerto Rico
  10. 2.5 1 km WSW of Parcelas Peñuelas, Puerto Rico
  11. 2.4 1 km NNW of Parcelas Peñuelas, Puerto Rico
  12. 1.8 1 km E of Mariano Colón, Puerto Rico
  13. 2.2 1 km WNW of Parcelas Peñuelas, Puerto Rico
  14. 2.6 1 km W of Parcelas Peñuelas, Puerto Rico
  15. 2.5 0 km NNE of Jauca, 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 86 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.