QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

7 km NW of Rincón, Puerto Rico

· 20 km deep · released about 420 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 7 kmAguada Municipio 12 kmAguadilla Municipio 19 kmAñasco Municipio 21 kmMoca Municipio 23 kmIsabela Municipio 32 kmHormigueros Municipio 34 kmSan Sebastián Municipio 35 kmLas Marías Municipio 38 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 2.8 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 7 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 581 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 420 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 36,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 26,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.3× the energy of this one
  4. This earthquake M 2.8 about 420 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 18.3900, -67.2970. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 7 km (5 mi) NW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 12 km (7 mi) W of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 19 km (12 mi) WSW of here earthquakes near Aguadilla Municipio
Añasco Municipio, PR 21 km (13 mi) WNW of here earthquakes near Añasco Municipio
Moca Municipio, PR 23 km (14 mi) W of here earthquakes near Moca Municipio
Isabela Municipio, PR 32 km (20 mi) WSW of here earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.2 1 km S of Maricao, Puerto Rico
  2. 2.5 17 km W of Rincón, Puerto Rico
  3. 3.8 31 km WSW of Stella, Puerto Rico
  4. 3.0 28 km WSW of Stella, Puerto Rico
  5. 2.3 8 km NE of Sabana Grande, Puerto Rico
  6. 2.5 1 km W of Las Marías, Puerto Rico
  7. 2.8 17 km SSW of Stella, Puerto Rico
  8. 3.1 29 km WNW of Rincón, Puerto Rico
  9. 3.8 47 km NW of Aguadilla, Puerto Rico
  10. 2.6 4 km NNW of Mayagüez, 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.