QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

83 km W of Pole Ojea, Puerto Rico

· 67 km deep · released about 2 tons of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 29 kmCabo Rojo Municipio 85 kmRincón Municipio 94 kmHormigueros Municipio 96 kmLajas Municipio 99 kmAñasco Municipio 101 kmAguada Municipio 102 kmSan Germán Municipio 102 kmGuánica Municipio 111 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
67 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 29 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 508 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 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 86,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,700× 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 4.1× 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 17.8293, -67.9607. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 29 km (18 mi) SSW of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 85 km (53 mi) WSW of here earthquakes near Cabo Rojo Municipio
Rincón Municipio, PR 94 km (58 mi) SW of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 96 km (59 mi) WSW of here earthquakes near Hormigueros Municipio
Lajas Municipio, PR 99 km (61 mi) W of here earthquakes near Lajas Municipio
Añasco Municipio, PR 101 km (63 mi) WSW of here earthquakes near Añasco 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. 3.6 50 km SSE of Boca de Yuma, Dominican Republic
  2. 3.3 73 km W of Pole Ojea, Puerto Rico
  3. 3.6 51 km SE of Punta Cana, Dominican Republic
  4. 3.3 79 km W of Pole Ojea, Puerto Rico
  5. 3.3 47 km ESE of Boca de Yuma, Dominican Republic
  6. 3.5 64 km W of Stella, Puerto Rico
  7. 3.2 54 km WSW of Stella, Puerto Rico
  8. 3.8 54 km WSW of Stella, Puerto Rico
  9. 3.0 64 km WSW of Stella, Puerto Rico
  10. 3.4 61 km WSW of Stella, Puerto Rico
  11. 3.1 67 km SE of Punta Cana, Dominican Republic
  12. 3.5 50 km WSW of Stella, Puerto Rico
  13. 3.3 54 km SE of Punta Cana, Dominican Republic
  14. 3.5 71 km SE of Boca de Yuma, Dominican Republic
  15. 3.6 54 km SE of Punta Cana, Dominican Republic

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 4.8 on 2024-08-26 — it released about 120 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.