QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

20 km WNW of Rincón, Puerto Rico

· 21 km deep · released about 430 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 21 kmAguada Municipio 25 kmAguadilla Municipio 29 kmAñasco Municipio 34 kmMoca Municipio 36 kmIsabela Municipio 42 kmHormigueros Municipio 46 kmSan Sebastián Municipio 48 kmQuebradillas Municipio 51 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
21 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 21 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2821 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 430 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 35,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 25,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.2× the energy of this one
  4. This earthquake M 2.8 about 430 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 18.4430, -67.4133. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 21 km (13 mi) NW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 25 km (16 mi) WNW of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 29 km (18 mi) W of here earthquakes near Aguadilla Municipio
Añasco Municipio, PR 34 km (21 mi) WNW of here earthquakes near Añasco Municipio
Moca Municipio, PR 36 km (22 mi) WNW of here earthquakes near Moca Municipio
Isabela Municipio, PR 42 km (26 mi) W of here earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.6 15 km N of San Antonio, Puerto Rico
  2. 2.4 64 km NW of Aguadilla, Puerto Rico
  3. 2.9 54 km NW of San Antonio, Puerto Rico
  4. 2.3 19 km WNW of Puerto Real, Puerto Rico
  5. 2.5 36 km NW of San Antonio, Puerto Rico
  6. 2.1 12 km NW of Puerto Real, Puerto Rico
  7. 2.4 41 km NW of Aguadilla, Puerto Rico
  8. 2.7 35 km NW of Rincón, Puerto Rico
  9. 2.7 35 km NW of San Antonio, Puerto Rico
  10. 2.3 6 km N of Puerto Real, Puerto Rico
  11. 2.2 3 km ESE of Espino, Puerto Rico
  12. 2.7 29 km WNW of Rincón, Puerto Rico
  13. 2.2 11 km SW of La Playa, Puerto Rico
  14. 2.9 10 km SSW of Stella, Puerto Rico
  15. 2.3 4 km ENE of Hormigueros, 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 4.4 on 2017-10-01 — it released about 280 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.