QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Ponce, PR

No earthquake was likely felt in Ponce in the 24 hours to 6:34 am AST (10:34 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 2.5 earthquake was recorded 24 km (15 mi) west-southwest of Ponce, PR, at 3:39 am AST on 19 July 2023 (07:39 UTC), 8.9 km deep.

USGS: Puerto Rico region

24 km (15 mi) WSW of Ponce, PR

3:39 am AST, Jul 19, 2023 · · 8.9 km deep · released about 190 lb of TNT

Every earthquake near Ponce Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 10 kmGuayanilla Municipio 10 kmPeñuelas Municipio 16 kmYauco Municipio 18 kmSabana Grande Municipio 22 kmLajas Municipio 23 kmPonce Municipio 26 kmSan Germán Municipio 30 kmMaricao 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
3:39 am AST on 19 July 2023 ()
Where
24 km (15 mi) west-southwest of Ponce, PR · earthquakes near Ponce
Magnitude
M 2.5 (md)
Depth
8.9 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 10 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1211 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 21 km (13 mi) from the epicentre. In Ponce, 24 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: Guayanilla 12 km, intensity II · Yauco 13 km, intensity II · Magas Arriba 13 km, intensity II · Tallaboa 15 km, intensity II · Tallaboa Alta 20 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 78,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 55,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.9× the energy of this one
  4. This earthquake M 2.5 about 190 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.

For this area

The largest earthquake within 50 km in our catalogue was M 6.4 on 2020-01-07 — about 620,000 times the energy of this one.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 17.9213, -66.8355. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 10 km (6 mi) WNW earthquakes near Guánica Municipio
Guayanilla Municipio, PR 10 km (6 mi) NNE earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 16 km (10 mi) NE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 18 km (11 mi) N earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 22 km (13 mi) NNW earthquakes near Sabana Grande Municipio
Lajas Municipio, PR 23 km (14 mi) WNW earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 2.5 2 km E of Yauco, Puerto Rico
  2. 2.3 7 km WSW of Guánica, Puerto Rico
  3. 2.0 0 km S of Yauco, Puerto Rico
  4. 1.5 2 km E of Maria Antonia, Puerto Rico
  5. 3.0 Puerto Rico region
  6. 2.8 5 km WSW of Gu?nica, Puerto Rico
  7. 2.2 0 km NNE of Fuig, Puerto Rico
  8. 2.3 4 km SSE of Adjuntas, Puerto Rico
  9. 2.3 2 km E of Magas Arriba, Puerto Rico
  10. 2.4 4 km WSW of Guánica, Puerto Rico
  11. 2.2 3 km W of Guánica, Puerto Rico
  12. 2.9 Puerto Rico region
  13. 2.4 6 km WSW of Guánica, Puerto Rico
  14. 2.7 Puerto Rico region
  15. 2.1 Puerto Rico region

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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.