QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

3 km SE of Bartolo, Puerto Rico

· 122 km deep · released about 1,700 lb of TNT

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10 km30 km60 km120 km N Río Grande Municipio 4 kmCanóvanas Municipio 7 kmLuquillo Municipio 12 kmJuncos Municipio 16 kmNaguabo Municipio 17 kmCarolina Municipio 17 kmLoíza Municipio 18 kmLas Piedras Municipio 18 kmGurabo 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 3.2 (md)
Depth
122 km below the surface
Felt
no reports yet
Nearest
Río Grande Municipio, 4 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 609 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 1,700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 200,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,100× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,500× the energy of this one
  4. This earthquake M 3.2 about 1,700 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× 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 18.3410, -65.8175. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Río Grande Municipio, PR 4 km (3 mi) SSW of here earthquakes near Río Grande Municipio
Canóvanas Municipio, PR 7 km (5 mi) E of here earthquakes near Canóvanas Municipio
Luquillo Municipio, PR 12 km (7 mi) WSW of here earthquakes near Luquillo Municipio
Juncos Municipio, PR 16 km (10 mi) NE of here earthquakes near Juncos Municipio
Naguabo Municipio, PR 17 km (10 mi) NNW of here earthquakes near Naguabo Municipio
Carolina Municipio, PR 17 km (11 mi) ESE of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 2.4 4 km SW of Las Piedras, Puerto Rico
  2. 3.0 12 km NNW of San Juan, Puerto Rico
  3. 3.1 2 km NW of Hato Candal, Puerto Rico
  4. 3.4 2 km N of Pueblito del Rio, Puerto Rico
  5. 3.0 23 km N of Suárez, Puerto Rico
  6. 1.6 2 km S of G. L. Garcia, Puerto Rico
  7. 2.2 1 km W of Naranjito, Puerto Rico
  8. 2.2 3 km ESE of G. L. Garcia, Puerto Rico
  9. 2.4 4 km SW of Las Piedras, Puerto Rico
  10. 3.4 33 km NNE of Vieques, Puerto Rico
  11. 2.5 2 km SE of Esperanza, Puerto Rico
  12. 2.2 4 km SSW of Las Piedras, Puerto Rico
  13. 2.1 4 km SSW of Las Piedras, Puerto Rico
  14. 2.6 3 km SSW of Las Piedras, Puerto Rico
  15. 2.1 4 km SSE of Juncos, 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 140 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.