QuakeIndex

Earthquake · reviewed by a seismologist

M 4.6ml

3 km SSW of Jobos, Puerto Rico

· 13 km deep · released about 120 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayama Municipio 7 kmSalinas Municipio 10 kmArroyo Municipio 15 kmCayey Municipio 20 kmPatillas Municipio 22 kmSanta Isabel Municipio 22 kmAibonito Municipio 24 kmCoamo Municipio 27 kmCidra Municipio 27 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 4.6 (ml)
Depth
13 km below the surface
Felt
385 reports · strongest reported intensity V
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Guayama Municipio, 7 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2191 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 385 people have reported feeling it to USGS.

How big was it?

This earthquake released about 120 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 1,400× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 63× the energy of this one
  3. Magna, Utah 2020 M 5.7 45× the energy of this one
  4. This earthquake M 4.6 about 120 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 250× 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 17.9300, -66.1798. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayama Municipio, PR 7 km (4 mi) SW of here earthquakes near Guayama Municipio
Salinas Municipio, PR 10 km (6 mi) ESE of here earthquakes near Salinas Municipio
Arroyo Municipio, PR 15 km (10 mi) WSW of here earthquakes near Arroyo Municipio
Cayey Municipio, PR 20 km (12 mi) S of here earthquakes near Cayey Municipio
Patillas Municipio, PR 22 km (14 mi) WSW of here earthquakes near Patillas Municipio
Santa Isabel Municipio, PR 22 km (14 mi) E 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

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

  1. 2.3 21 km SSE of Arroyo, Puerto Rico
  2. 1.7 4 km ENE of Bayamon, Puerto Rico
  3. 1.9 0 km SSE of Jobos, Puerto Rico
  4. 1.5 1 km E of Jobos, Puerto Rico
  5. 2.2 7 km WNW of Palomas, Puerto Rico
  6. 1.8 3 km ENE of Jobos, Puerto Rico
  7. 1.9 0 km NNE of Jobos, Puerto Rico
  8. 1.8 1 km ESE of Jobos, Puerto Rico
  9. 2.2 1 km S of Ponce, Puerto Rico
  10. 1.6 3 km ESE of La Plena, Puerto Rico
  11. 1.5 3 km ENE of La Plena, Puerto Rico
  12. 1.9 0 km NNE of Jobos, Puerto Rico
  13. 2.8 0 km SSE of Jobos, Puerto Rico
  14. 2.7 0 km S of Jobos, Puerto Rico
  15. 1.8 1 km WSW 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 4.6 on 2016-12-05.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.