QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

16 km WNW of Rincón, Puerto Rico

· 14 km deep · released about 2 tons of TNT

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10 km30 km60 km120 km N Rincón Municipio 16 kmAguada Municipio 22 kmAguadilla Municipio 28 kmAñasco Municipio 30 kmMoca Municipio 34 kmHormigueros Municipio 41 kmIsabela Municipio 42 kmSan Sebastián Municipio 46 kmLas Marías Municipio 48 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 3.4 (md)
Depth
14 km below the surface
Felt
1 report · strongest reported intensity IV
Nearest
Rincón Municipio, 16 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 643 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 83,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,700× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,600× the energy of this one
  4. This earthquake M 3.4 about 2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.3× 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 18.3907, -67.3968. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 16 km (10 mi) WNW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 22 km (14 mi) W of here earthquakes near Aguada Municipio
Aguadilla Municipio, PR 28 km (18 mi) WSW of here earthquakes near Aguadilla Municipio
Añasco Municipio, PR 30 km (19 mi) WNW of here earthquakes near Añasco Municipio
Moca Municipio, PR 34 km (21 mi) W of here earthquakes near Moca Municipio
Hormigueros Municipio, PR 41 km (26 mi) NW of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 3.4 14 km WNW of Rincón, Puerto Rico
  2. 3.1 44 km WSW of Stella, Puerto Rico
  3. 3.2 5 km SSE of Mora, Puerto Rico
  4. 2.9 24 km WNW of Rincón, Puerto Rico
  5. 2.3 5 km ENE of Hormigueros, Puerto Rico
  6. 1.9 3 km SSW of Puerto Real, Puerto Rico
  7. 3.1 40 km NNW of San Antonio, Puerto Rico
  8. 2.7 6 km W of Pole Ojea, Puerto Rico
  9. 2.6 6 km WNW of Pole Ojea, Puerto Rico
  10. 2.7 11 km WSW of Pole Ojea, Puerto Rico
  11. 2.9 11 km NW of Puerto Real, Puerto Rico
  12. 3.2 8 km SSW of La Playa, Puerto Rico
  13. 3.6 37 km W of Stella, Puerto Rico
  14. 2.6 14 km WSW of Mayagüez, Puerto Rico
  15. 3.6 0 km S of Rafael Hernandez, 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 30 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.