QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7Md

46 km N of Brenas, Puerto Rico

· 45 km deep · released about 340 lb of TNT

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10 km30 km60 km120 km N Dorado Municipio 46 kmToa Baja Municipio 48 kmVega Baja Municipio 49 kmVega Alta Municipio 50 kmCataño Municipio 51 kmManatí Municipio 54 kmBarceloneta Municipio 55 kmSan Juan Municipio 56 kmToa Alta Municipio 58 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 2.7 (Md)
Depth
45 km below the surface
Felt
no reports yet
Nearest
Dorado Municipio, 46 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3625 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 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 18.8840, -66.2755. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Dorado Municipio, PR 46 km (28 mi) N of here earthquakes near Dorado Municipio
Toa Baja Municipio, PR 48 km (30 mi) N of here earthquakes near Toa Baja Municipio
Vega Baja Municipio, PR 49 km (31 mi) NNE of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 50 km (31 mi) N of here earthquakes near Vega Alta Municipio
Cataño Municipio, PR 51 km (31 mi) NNW of here earthquakes near Cataño Municipio
Manatí Municipio, PR 54 km (34 mi) NNE of here earthquakes near Manatí Municipio

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

Aftershocks so far

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

  1. 3.0 74 km N of San Juan, Puerto Rico
  2. 3.2 73 km N of San Juan, Puerto Rico
  3. 3.1 20 km N of Dorado, Puerto Rico
  4. 2.8 70 km N of San Juan, Puerto Rico
  5. 3.1 18 km NNE of Arecibo, Puerto Rico
  6. 3.4 4 km N of Vega Baja, Puerto Rico
  7. 2.4 61 km N of San Juan, Puerto Rico
  8. 2.9 70 km N of San Juan, Puerto Rico
  9. 2.9 78 km N of Brenas, Puerto Rico
  10. 2.6 75 km N of San Juan, Puerto Rico
  11. 3.0 76 km N of San Juan, Puerto Rico
  12. 2.9 70 km N of Arecibo, Puerto Rico
  13. 2.5 67 km N of Tierras Nuevas Poniente, Puerto Rico
  14. 2.9 38 km N of San Juan, Puerto Rico
  15. 2.9 66 km N of Tierras Nuevas Poniente, 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.