QuakeIndex

Earthquake · reviewed by a seismologist

M 4.3mb

21 km NW of Rincón, Puerto Rico

· 10 km deep · released about 43 tons of TNT

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10 km30 km60 km120 km N Rincón Municipio 22 kmAguada Municipio 26 kmAguadilla Municipio 29 kmAñasco Municipio 35 kmMoca Municipio 36 kmIsabela Municipio 42 kmHormigueros Municipio 48 kmSan Sebastián Municipio 49 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 4.3 (mb)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 22 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3183 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

How big was it?

This earthquake released about 43 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 4,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 180× the energy of this one
  3. Magna, Utah 2020 M 5.7 130× the energy of this one
  4. This earthquake M 4.3 about 43 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 89× 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 18.4568, -67.4137. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 22 km (13 mi) NW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 26 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 35 km (22 mi) WNW of here earthquakes near Añasco Municipio
Moca Municipio, PR 36 km (23 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

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

  1. 2.1 10 km W of Puerto Real, Puerto Rico
  2. 3.1 42 km NW of Aguadilla, Puerto Rico
  3. 2.5 16 km SW of Stella, Puerto Rico
  4. 1.9 Mona Passage
  5. 3.1 17 km NW of Rincón, Puerto Rico
  6. 2.6 Mona Passage
  7. 2.6 31 km N of San Antonio, Puerto Rico
  8. 2.7 21 km SW of Stella, Puerto Rico
  9. 2.0 15 km SSW of Stella, Puerto Rico
  10. 2.7 19 km NW of San Antonio, Puerto Rico
  11. 2.5 11 km WNW of Puerto Real, Puerto Rico
  12. 2.2 5 km NNW of Puerto Real, Puerto Rico
  13. 2.0 4 km W of Las Marías, Puerto Rico
  14. 3.2 42 km NNW of San Antonio, Puerto Rico
  15. 2.3 22 km W of Puerto Real, 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 1.4 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.