QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

8 km SSE of Jobos, Puerto Rico

· 13 km deep · released about 1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayama Municipio 10 kmArroyo Municipio 14 kmSalinas Municipio 16 kmPatillas Municipio 20 kmCayey Municipio 24 kmSanta Isabel Municipio 28 kmMaunabo Municipio 28 kmAibonito Municipio 30 kmCidra Municipio 32 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
13 km below the surface
Felt
no reports yet
Nearest
Guayama Municipio, 10 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 997 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 tons 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 6.7 170,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,200× the energy of this one
  4. This earthquake M 3.2 about 1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.1× 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 17.8882, -66.1360. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayama Municipio, PR 10 km (6 mi) S of here earthquakes near Guayama Municipio
Arroyo Municipio, PR 14 km (8 mi) SW of here earthquakes near Arroyo Municipio
Salinas Municipio, PR 16 km (10 mi) SE of here earthquakes near Salinas Municipio
Patillas Municipio, PR 20 km (13 mi) SW of here earthquakes near Patillas Municipio
Cayey Municipio, PR 24 km (15 mi) S of here earthquakes near Cayey Municipio
Santa Isabel Municipio, PR 28 km (17 mi) ESE of here earthquakes near Santa Isabel Municipio

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

Aftershocks so far

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

  1. 2.1 4 km SSE of Salinas, Puerto Rico
  2. 2.7 6 km SSE of Salinas, Puerto Rico
  3. 2.4 2 km S of Salinas, Puerto Rico
  4. 2.9 5 km SSE of Salinas, Puerto Rico
  5. 2.2 3 km WSW of Central Aguirre, Puerto Rico
  6. 2.3 5 km SSE of Salinas, Puerto Rico
  7. 2.1 3 km SSE of Salinas, Puerto Rico
  8. 2.1 4 km ENE of Bayamon, Puerto Rico
  9. 2.2 5 km SSW of Arroyo, Puerto Rico
  10. 2.4 4 km ENE of Bayamon, Puerto Rico
  11. 2.5 7 km ESE of Naranjito, Puerto Rico
  12. 2.2 5 km SSE of Salinas, Puerto Rico
  13. 2.4 6 km SSE of Salinas, Puerto Rico
  14. 2.6 6 km SSE of Salinas, Puerto Rico
  15. 2.5 Puerto Rico region

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 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.