QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

3 km WNW of San Lorenzo, Puerto Rico

· 132 km deep · released about 1,100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caguas Municipio 6 kmSan Lorenzo Municipio 7 kmGurabo Municipio 8 kmJuncos Municipio 9 kmLas Piedras Municipio 13 kmTrujillo Alto Municipio 14 kmAguas Buenas Municipio 15 kmCanóvanas Municipio 18 kmCidra Municipio 18 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 3.0 (md)
Depth
132 km below the surface
Felt
no reports yet
Nearest
Caguas Municipio, 6 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1048 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 1,100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 300,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,400× the energy of this one
  4. This earthquake M 3.0 about 1,100 lb of TNT

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 18.2058, -65.9942. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caguas Municipio, PR 6 km (4 mi) E of here earthquakes near Caguas Municipio
San Lorenzo Municipio, PR 7 km (4 mi) NNW of here earthquakes near San Lorenzo Municipio
Gurabo Municipio, PR 8 km (5 mi) S of here earthquakes near Gurabo Municipio
Juncos Municipio, PR 9 km (6 mi) WSW of here earthquakes near Juncos Municipio
Las Piedras Municipio, PR 13 km (8 mi) W of here earthquakes near Las Piedras Municipio
Trujillo Alto Municipio, PR 14 km (9 mi) S of here earthquakes near Trujillo Alto Municipio

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

Aftershocks so far

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

  1. 2.0 6 km SSE of Salinas, Puerto Rico
  2. 2.5 3 km ESE of Orocovis, Puerto Rico
  3. 2.2 6 km SSE of Salinas, Puerto Rico
  4. 2.8 5 km S of Punta Santiago, Puerto Rico
  5. 2.0 5 km SSE of Salinas, Puerto Rico
  6. 2.1 5 km WSW of Central Aguirre, Puerto Rico
  7. 2.1 4 km SSE of Salinas, Puerto Rico
  8. 2.0 5 km SSE of Salinas, Puerto Rico
  9. 2.5 3 km SSE of Salinas, Puerto Rico
  10. 2.0 5 km WSW of Central Aguirre, Puerto Rico
  11. 2.5 5 km SSE of Salinas, Puerto Rico
  12. 1.9 5 km SSE of Salinas, Puerto Rico
  13. 2.6 5 km SSE of Salinas, Puerto Rico
  14. 1.8 5 km SSE of Salinas, Puerto Rico
  15. 2.8 5 km SSE of Salinas, 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 210 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.