QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Earthquake near Ponce, PR

No earthquake was likely felt in Ponce in the 24 hours to 4:31 pm AST (20:31 UTC). The last one was M 3.0, 26 km (16 mi) WSW, at 3:45 am AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Ponce

This page: a magnitude 2.7 earthquake was recorded 11 km (7 mi) west-southwest of Ponce, PR, at 1:44 am AST on 22 June 2017 (05:44 UTC), 7.0 km deep.

USGS: Puerto Rico region

11 km (7 mi) WSW of Ponce, PR

1:44 am AST, Jun 22, 2017 · · 7.0 km deep · released about 310 lb of TNT

Every earthquake near Ponce Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Peñuelas Municipio 8 kmGuayanilla Municipio 11 kmPonce Municipio 12 kmYauco Municipio 21 kmGuánica Municipio 22 kmJuana Díaz Municipio 24 kmAdjuntas Municipio 26 kmSabana Grande Municipio 29 kmJayuya Municipio 31 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
1:44 am AST on 22 June 2017 ()
Where
11 km (7 mi) west-southwest of Ponce, PR · earthquakes near Ponce
Magnitude
M 2.7 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Peñuelas Municipio, 8 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3367 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 24 km (15 mi) from the epicentre. In Ponce, 11 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Tallaboa 4 km, intensity III · Magas Arriba 9 km, intensity III · Tallaboa Alta 11 km, intensity III · Guayanilla 11 km, intensity III · Ponce 11 km, intensity II · Yauco 17 km, intensity II · Adjuntas 23 km, intensity II. Estimated for each town centre; each link is that town's own record.

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 17.9551, -66.7125. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Peñuelas Municipio, PR 8 km (5 mi) NNW earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 11 km (7 mi) WNW earthquakes near Guayanilla Municipio
Ponce Municipio, PR 12 km (8 mi) ENE earthquakes near Ponce Municipio
Yauco Municipio, PR 21 km (13 mi) NW earthquakes near Yauco Municipio
Guánica Municipio, PR 22 km (14 mi) W earthquakes near Guánica Municipio
Juana Díaz Municipio, PR 24 km (15 mi) ENE earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 1.8 8 km NNW of Yauco, Puerto Rico
  2. 2.0 6 km NW of Sabana Grande, Puerto Rico
  3. 1.8 7 km NNW of Yauco, Puerto Rico
  4. 1.8 6 km NNW of Yauco, Puerto Rico
  5. 2.7 3 km SW of Maricao, Puerto Rico
  6. 2.1 16 km S of Ponce, Puerto Rico
  7. 2.0 7 km SSW of Tallaboa, Puerto Rico
  8. 2.2 3 km SSE of Boquerón, Puerto Rico
  9. 2.7 2 km ESE of Magas Arriba, Puerto Rico
  10. 2.3 4 km WSW of Tallaboa, Puerto Rico
  11. 2.1 0 km SSW of Cayuco, Puerto Rico
  12. 1.9 14 km SSW of Guánica, Puerto Rico
  13. 2.1 11 km S of Santa Isabel, Puerto Rico
  14. 2.6 13 km S of Santa Isabel, Puerto Rico
  15. 1.9 3 km SE of La Parguera, 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.

On USGS

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