QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

12 km NNE of Tierras Nuevas Poniente, Puerto Rico

· 90 km deep · released about 1.2 tons of TNT

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10 km30 km60 km120 km N Vega Baja Municipio 14 kmManatí Municipio 14 kmBarceloneta Municipio 15 kmVega Alta Municipio 19 kmDorado Municipio 23 kmFlorida Municipio 25 kmArecibo Municipio 28 kmMorovis Municipio 28 kmToa Baja Municipio 30 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 3.3 (md)
Depth
90 km below the surface
Felt
no reports yet
Nearest
Vega Baja Municipio, 14 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3127 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 1.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 140,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,400× the energy of this one
  4. This earthquake M 3.3 about 1.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.5× 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 18.5666, -66.4523. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Baja Municipio, PR 14 km (8 mi) NNW of here earthquakes near Vega Baja Municipio
Manatí Municipio, PR 14 km (9 mi) NNE of here earthquakes near Manatí Municipio
Barceloneta Municipio, PR 15 km (10 mi) NE of here earthquakes near Barceloneta Municipio
Vega Alta Municipio, PR 19 km (12 mi) NW of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 23 km (14 mi) WNW of here earthquakes near Dorado Municipio
Florida Municipio, PR 25 km (15 mi) NNE of here earthquakes near Florida Municipio

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

Aftershocks so far

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

  1. 2.9 61 km N of Tierras Nuevas Poniente, Puerto Rico
  2. 2.4 7 km NNE of Garrochales, Puerto Rico
  3. 2.9 57 km N of Tierras Nuevas Poniente, Puerto Rico
  4. 2.5 23 km NNW of Tierras Nuevas Poniente, Puerto Rico
  5. 1.9 7 km WSW of Orocovis, Puerto Rico
  6. 2.7 18 km NNE of Carrizales, Puerto Rico
  7. 3.1 14 km NNW of Camuy, Puerto Rico
  8. 2.6 37 km N of Tierras Nuevas Poniente, Puerto Rico
  9. 2.8 41 km N of Brenas, Puerto Rico
  10. 3.2 6 km ENE of Jayuya, Puerto Rico
  11. 2.7 2 km SW of Toa Baja, Puerto Rico
  12. 3.0 4 km W of Ciales, Puerto Rico
  13. 2.8 4 km NNE of Guaynabo, Puerto Rico
  14. 2.7 59 km N of Tierras Nuevas Poniente, Puerto Rico
  15. 2.9 2 km WNW of Vega Baja, 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 4.8 on 2017-08-18 — it released about 200 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.