QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

2 km NNE of Franquez, Puerto Rico

· 113 km deep · released about 680 lb of TNT

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10 km30 km60 km120 km N Morovis Municipio 5 kmVega Baja Municipio 10 kmCorozal Municipio 12 kmVega Alta Municipio 12 kmManatí Municipio 12 kmCiales Municipio 13 kmFlorida Municipio 15 kmOrocovis Municipio 16 kmToa Alta 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 2.9 (md)
Depth
113 km below the surface
Felt
no reports yet
Nearest
Morovis Municipio, 5 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3239 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 18.3636, -66.4173. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morovis Municipio, PR 5 km (3 mi) N of here earthquakes near Morovis Municipio
Vega Baja Municipio, PR 10 km (6 mi) SSW of here earthquakes near Vega Baja Municipio
Corozal Municipio, PR 12 km (7 mi) NW of here earthquakes near Corozal Municipio
Vega Alta Municipio, PR 12 km (7 mi) SW of here earthquakes near Vega Alta Municipio
Manatí Municipio, PR 12 km (7 mi) SE of here earthquakes near Manatí Municipio
Ciales Municipio, PR 13 km (8 mi) NE of here earthquakes near Ciales Municipio

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

Aftershocks so far

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

  1. 2.5 2 km ESE of Mariano Colón, Puerto Rico
  2. 2.6 1 km NW of Aguas Buenas, Puerto Rico
  3. 2.8 3 km E of Tierras Nuevas Poniente, Puerto Rico
  4. 3.1 4 km NNE of Hatillo, Puerto Rico
  5. 1.6 0 km ESE of Villalba, Puerto Rico
  6. 3.1 28 km N of Tierras Nuevas Poniente, Puerto Rico
  7. 2.9 16 km NNE of Carrizales, Puerto Rico
  8. 3.0 10 km NNW of San Juan, Puerto Rico
  9. 2.3 1 km ESE of Río Cañas Abajo, Puerto Rico
  10. 2.3 12 km WNW of Adjuntas, Puerto Rico
  11. 2.6 6 km NNW of Bairoa, Puerto Rico
  12. 2.5 6 km NNE of Hatillo, Puerto Rico
  13. 2.2 3 km NW of Guayabal, Puerto Rico
  14. 2.8 Puerto Rico region
  15. 2.7 1 km SSE 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.

On USGS

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