QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Guánica, PR

USGS: 5 km WSW of Guánica, Puerto Rico

35 km (22 mi) W of Ponce, PR · 34 km (21 mi) SE of Mayagüez, PR

11:14 pm AST, Oct 3, 2026 · · 7.6 km deep · released about 180 lb of TNT

Every earthquake near Guánica Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 3 kmLajas Municipio 9 kmSabana Grande Municipio 14 kmGuayanilla Municipio 17 kmYauco Municipio 17 kmSan Germán Municipio 19 kmMaricao Municipio 24 kmCabo Rojo Municipio 24 kmPeñuelas Municipio 25 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
11:14 pm AST on 3 October 2026 ()
Where
5 km (3 mi) WSW of Guánica, PR · earthquakes near Guánica
Magnitude
M 2.5 (md)
Depth
7.6 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 3 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2 hours ago

A magnitude 2.5 earthquake was recorded 5 km (3 mi) WSW of Guánica, PR, at 11:14 pm AST on 3 October 2026 (03:14 UTC). This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

Earthquakes near other towns within 30 km: Fuig, Maria Antonia, Liborio Negron Torres, La Parguera, Lluveras, Palomas.

How big was it?

This earthquake released about 180 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 86,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 61,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.4× the energy of this one
  4. This earthquake M 2.5 about 180 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 since 2016 was M 6.4 on 2020-01-07 — about 680,000 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 17.9582, -66.9532. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 3 km (2 mi) ESE earthquakes near Guánica Municipio
Lajas Municipio, PR 9 km (6 mi) WNW earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 14 km (9 mi) N earthquakes near Sabana Grande Municipio
Guayanilla Municipio, PR 17 km (11 mi) ENE earthquakes near Guayanilla Municipio
Yauco Municipio, PR 17 km (11 mi) NE earthquakes near Yauco Municipio
San Germán Municipio, PR 19 km (12 mi) NNW earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.2 5 km SW of Guánica, Puerto Rico
  2. 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.

On USGS

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