QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

14 km SSE of Lamboglia, Puerto Rico

· 25 km deep · released about 2.3 tons of TNT

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10 km30 km60 km120 km N Maunabo Municipio 15 kmPatillas Municipio 16 kmArroyo Municipio 17 kmYabucoa Municipio 23 kmGuayama Municipio 25 kmSan Lorenzo Municipio 32 kmHumacao Municipio 33 kmCayey Municipio 36 kmLas Piedras Municipio 36 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 3.5 (md)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Maunabo Municipio, 15 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1381 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 2.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 75,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,300× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,400× the energy of this one
  4. This earthquake M 3.5 about 2.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.7× 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 17.8666, -65.9260. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maunabo Municipio, PR 15 km (9 mi) SSW of here earthquakes near Maunabo Municipio
Patillas Municipio, PR 16 km (10 mi) SSE of here earthquakes near Patillas Municipio
Arroyo Municipio, PR 17 km (11 mi) SE of here earthquakes near Arroyo Municipio
Yabucoa Municipio, PR 23 km (14 mi) SSW of here earthquakes near Yabucoa Municipio
Guayama Municipio, PR 25 km (16 mi) ESE of here earthquakes near Guayama Municipio
San Lorenzo Municipio, PR 32 km (20 mi) S of here earthquakes near San Lorenzo Municipio

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

Aftershocks so far

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

  1. 3.4 Puerto Rico region
  2. 3.1 3 km E of Celada, Puerto Rico
  3. 2.5 6 km N of Yaurel, Puerto Rico
  4. 2.5 Puerto Rico region
  5. 3.1 3 km SSW of Cayey, Puerto Rico
  6. 1.9 9 km SSW of Emajagua, Puerto Rico
  7. 3.1 Puerto Rico region
  8. 2.8 16 km S of Lamboglia, Puerto Rico
  9. 2.4 5 km ESE of Punta Santiago, Puerto Rico
  10. 2.8 28 km SE of Emajagua, Puerto Rico
  11. 3.2 24 km SW of Esperanza, Puerto Rico
  12. 3.1 34 km S of Lamboglia, Puerto Rico
  13. 2.1 3 km WNW of Jobos, Puerto Rico
  14. 2.6 2 km NW of Punta Santiago, Puerto Rico
  15. 2.6 1 km SE of Lamboglia, 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 53 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.