QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

10 km S of Ponce, Puerto Rico

· 25 km deep · released about 310 lb of TNT

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10 km30 km60 km120 km N Ponce Municipio 10 kmPeñuelas Municipio 16 kmJuana Díaz Municipio 18 kmGuayanilla Municipio 20 kmSanta Isabel Municipio 26 kmVillalba Municipio 30 kmYauco Municipio 31 kmGuánica Municipio 31 kmAdjuntas 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 2.7 (md)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 10 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1498 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 310 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 50,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 35,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.1× the energy of this one
  4. This earthquake M 2.7 about 310 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 17.9135, -66.6332. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 10 km (6 mi) SSW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 16 km (10 mi) SE of here earthquakes near Peñuelas Municipio
Juana Díaz Municipio, PR 18 km (11 mi) WSW of here earthquakes near Juana Díaz Municipio
Guayanilla Municipio, PR 20 km (13 mi) ESE of here earthquakes near Guayanilla Municipio
Santa Isabel Municipio, PR 26 km (16 mi) W of here earthquakes near Santa Isabel Municipio
Villalba Municipio, PR 30 km (18 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

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

  1. 2.2 2 km SSW of Tallaboa, Puerto Rico
  2. 2.8 4 km ESE of La Parguera, Puerto Rico
  3. 2.5 5 km WSW of La Parguera, Puerto Rico
  4. 2.4 14 km SSE of Guánica, Puerto Rico
  5. 2.0 11 km SSE of Lares, Puerto Rico
  6. 3.3 5 km SE of La Parguera, Puerto Rico
  7. 1.9 6 km SSW of Tallaboa, Puerto Rico
  8. 2.0 1 km W of Indios, Puerto Rico
  9. 2.6 11 km SSE of Maria Antonia, Puerto Rico
  10. 2.4 5 km SSW of Indios, Puerto Rico
  11. 2.4 13 km SSE of Guánica, Puerto Rico
  12. 2.4 2 km S of Indios, Puerto Rico
  13. 2.3 Puerto Rico region
  14. 1.9 6 km ENE of La Parguera, Puerto Rico
  15. 2.5 6 km S 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 390,000 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.