QuakeIndex

Earthquake · reviewed by a seismologist

M 4.7mb

9 km SSE of Tallaboa, Puerto Rico

· 10 km deep · released about 170 tons of TNT

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10 km30 km60 km120 km N Ponce Municipio 13 kmPeñuelas Municipio 13 kmGuayanilla Municipio 15 kmJuana Díaz Municipio 23 kmGuánica Municipio 25 kmYauco Municipio 26 kmAdjuntas Municipio 31 kmSanta Isabel Municipio 32 kmSabana Grande Municipio 33 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 4.7 (mb)
Depth
10 km below the surface
Felt
4 reports · strongest reported intensity V
Measured shaking
intensity III (ShakeMap)
USGS impact alert
green
Nearest
Ponce Municipio, 13 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2376 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 1,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 45× the energy of this one
  3. Magna, Utah 2020 M 5.7 32× the energy of this one
  4. This earthquake M 4.7 about 170 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 350× 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 17.9128, -66.6898. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 13 km (8 mi) SW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 13 km (8 mi) SSE of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 15 km (10 mi) SE of here earthquakes near Guayanilla Municipio
Juana Díaz Municipio, PR 23 km (14 mi) WSW of here earthquakes near Juana Díaz Municipio
Guánica Municipio, PR 25 km (16 mi) E of here earthquakes near Guánica Municipio
Yauco Municipio, PR 26 km (16 mi) SE of here earthquakes near Yauco Municipio

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

Aftershocks so far

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

  1. 3.5 8 km S of Indios, Puerto Rico
  2. 2.3 3 km SSE of Indios, Puerto Rico
  3. 4.3 8 km SSE of Indios, Puerto Rico
  4. 2.0 2 km SSE of Indios, Puerto Rico
  5. 2.1 4 km S of Indios, Puerto Rico
  6. 2.3 10 km S of Tallaboa, Puerto Rico
  7. 2.4 12 km SSE of Indios, Puerto Rico
  8. 2.2 0 km NNE of Guayanilla, Puerto Rico
  9. 2.7 6 km S of Indios, Puerto Rico
  10. 3.2 2 km SSW of Guánica, Puerto Rico
  11. 4.3 4 km S of Tallaboa, Puerto Rico
  12. 2.4 3 km S of Indios, Puerto Rico
  13. 2.0 2 km SSW of Magas Arriba, Puerto Rico
  14. 2.4 2 km S of Maria Antonia, Puerto Rico
  15. 1.9 5 km SSW of Indios, 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 6.4 on 2020-01-07 — it released about 350 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.