QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

2 km NNE of Barahona, Puerto Rico

· 58 km deep · released about 1.8 tons of TNT

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10 km30 km60 km120 km N Morovis Municipio 7 kmManatí Municipio 10 kmVega Baja Municipio 10 kmCiales Municipio 12 kmVega Alta Municipio 13 kmFlorida Municipio 13 kmCorozal Municipio 14 kmBarceloneta Municipio 16 kmOrocovis Municipio 17 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 3.4 (md)
Depth
58 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Morovis Municipio, 7 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3330 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 95,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,300× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,000× the energy of this one
  4. This earthquake M 3.4 about 1.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 3.7× 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 18.3756, -66.4386. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morovis Municipio, PR 7 km (4 mi) NNW of here earthquakes near Morovis Municipio
Manatí Municipio, PR 10 km (6 mi) SE of here earthquakes near Manatí Municipio
Vega Baja Municipio, PR 10 km (6 mi) SSW of here earthquakes near Vega Baja Municipio
Ciales Municipio, PR 12 km (7 mi) NE of here earthquakes near Ciales Municipio
Vega Alta Municipio, PR 13 km (8 mi) WSW of here earthquakes near Vega Alta Municipio
Florida Municipio, PR 13 km (8 mi) E of here earthquakes near Florida Municipio

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

Aftershocks so far

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

  1. 1.9 3 km SE of Salinas, Puerto Rico
  2. 2.7 6 km N of Santo Domingo, Puerto Rico
  3. 3.0 0 km ENE of Río Cañas Abajo, Puerto Rico
  4. 2.5 1 km ENE of Salinas, Puerto Rico
  5. 2.8 3 km N of San Juan, Puerto Rico
  6. 3.4 29 km N of Dorado, Puerto Rico
  7. 2.1 0 km SSW of Cayuco, Puerto Rico
  8. 2.1 4 km SSE of Cayey, Puerto Rico
  9. 2.8 17 km N of Carrizales, Puerto Rico
  10. 3.1 1 km NW of Bayamón, Puerto Rico
  11. 2.7 15 km NNE of Hatillo, Puerto Rico
  12. 2.3 1 km S of Río Lajas, Puerto Rico
  13. 2.5 10 km WSW of Adjuntas, Puerto Rico
  14. 2.6 21 km NNE of Dorado, Puerto Rico
  15. 3.1 5 km ESE of Cataño, 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.

On USGS

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