QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

7 km SSW of Ponce, Puerto Rico

· 9.8 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Ponce Municipio 7 kmPeñuelas Municipio 13 kmJuana Díaz Municipio 17 kmGuayanilla Municipio 18 kmSanta Isabel Municipio 27 kmVillalba Municipio 27 kmYauco Municipio 28 kmAdjuntas Municipio 29 kmGuánica Municipio 30 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 1.6 (md)
Depth
9.8 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 7 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1542 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 17.9428, -66.6382. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 7 km (5 mi) SSW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 13 km (8 mi) SE of here earthquakes near Peñuelas Municipio
Juana Díaz Municipio, PR 17 km (10 mi) WSW of here earthquakes near Juana Díaz Municipio
Guayanilla Municipio, PR 18 km (11 mi) ESE of here earthquakes near Guayanilla Municipio
Santa Isabel Municipio, PR 27 km (16 mi) W of here earthquakes near Santa Isabel Municipio
Villalba Municipio, PR 27 km (17 mi) SW of here earthquakes near Villalba Municipio

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

Aftershocks so far

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

  1. 2.1 Puerto Rico region
  2. 1.8 5 km SE of La Parguera, Puerto Rico
  3. 2.2 2 km E of Magas Arriba, Puerto Rico
  4. 2.1 4 km SW of Guánica, Puerto Rico
  5. 2.7 1 km NE of Guayanilla, Puerto Rico
  6. 2.0 Puerto Rico region
  7. 2.1 5 km SSW of Indios, Puerto Rico
  8. 1.7 5 km SW of Guánica, Puerto Rico
  9. 1.9 2 km E of Maria Antonia, Puerto Rico
  10. 2.0 Puerto Rico region
  11. 2.1 6 km WSW of Guánica, Puerto Rico
  12. 1.9 5 km WSW of Guánica, Puerto Rico
  13. 2.2 1 km SE of Maria Antonia, Puerto Rico
  14. 2.0 1 km NNW of Maria Antonia, Puerto Rico
  15. 2.1 5 km WSW of Guánica, 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 16,000,000 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.