QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

3 km WSW of Manatí, Puerto Rico

· 115 km deep · released about 2.6 tons of TNT

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10 km30 km60 km120 km N Manatí Municipio 5 kmFlorida Municipio 7 kmBarceloneta Municipio 7 kmCiales Municipio 13 kmVega Baja Municipio 14 kmMorovis Municipio 15 kmArecibo Municipio 16 kmVega Alta Municipio 20 kmOrocovis Municipio 23 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
115 km below the surface
Felt
no reports yet
Nearest
Manatí Municipio, 5 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 975 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 2.6 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 65,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,100× the energy of this one
  4. This earthquake M 3.5 about 2.6 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.4× 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 18.4136, -66.5213. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Manatí Municipio, PR 5 km (3 mi) SW of here earthquakes near Manatí Municipio
Florida Municipio, PR 7 km (4 mi) NE of here earthquakes near Florida Municipio
Barceloneta Municipio, PR 7 km (5 mi) SSE of here earthquakes near Barceloneta Municipio
Ciales Municipio, PR 13 km (8 mi) N of here earthquakes near Ciales Municipio
Vega Baja Municipio, PR 14 km (9 mi) WSW of here earthquakes near Vega Baja Municipio
Morovis Municipio, PR 15 km (9 mi) NW of here earthquakes near Morovis Municipio

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

Aftershocks so far

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

  1. 2.7 3 km NW of Orocovis, Puerto Rico
  2. 2.4 3 km NNE of Guayanilla, Puerto Rico
  3. 2.3 9 km NNW of Coto Laurel, Puerto Rico
  4. 3.5 0 km SSW of Bayamón, Puerto Rico
  5. 2.7 4 km S of Adjuntas, Puerto Rico
  6. 2.5 7 km ESE of Naranjito, Puerto Rico
  7. 2.1 Puerto Rico region
  8. 2.4 Puerto Rico region
  9. 2.9 5 km WSW of Adjuntas, Puerto Rico
  10. 2.7 14 km NE of Arecibo, Puerto Rico
  11. 2.0 1 km N of Parcelas Pe?uelas, Puerto Rico
  12. 2.5 2 km W of Potala Pastillo, Puerto Rico
  13. 2.4 1 km N of Magas Arriba, Puerto Rico
  14. 2.6 4 km NNE of Carrizales, Puerto Rico
  15. 2.5 17 km NNW of Brenas, 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 4.4 on 2018-12-09 — it released about 23 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.