QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

Earthquake near Stella, PR

No earthquake was likely felt in Stella in the 24 hours to 5:53 pm AST (21:53 UTC). The last one was M 3.4, 55 km (34 mi) NNE, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Stella

This page: a magnitude 3.3 earthquake was recorded 17 km (11 mi) southwest of Stella, PR, at 2:16 am AST on 1 December 2025 (06:16 UTC), 12 km deep.

USGS: 17 km SW of Stella, Puerto Rico

23 km (14 mi) W of Mayagüez, PR · 138 km (86 mi) W of San Juan, PR

2:16 am AST, Dec 1, 2025 · · 12 km deep · released about 1.3 tons of TNT

Every earthquake near Stella Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 18 kmAñasco Municipio 25 kmAguada Municipio 26 kmHormigueros Municipio 27 kmCabo Rojo Municipio 30 kmMoca Municipio 35 kmSan Germán Municipio 36 kmAguadilla Municipio 38 kmLas Marías Municipio 40 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
2:16 am AST on 1 December 2025 ()
Where
17 km (11 mi) southwest of Stella, PR · earthquakes near Stella
Magnitude
M 3.3 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 18 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 259 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 51 km (32 mi) from the epicentre. In Stella, 17 km away, the estimate is intensity III (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: Rincón 19 km, intensity III · Mayagüez 23 km, intensity II · Puerto Real 23 km, intensity II · Aguada 26 km, intensity II · Pole Ojea 32 km, intensity II · Aguadilla 32 km, intensity II · San Germán 36 km, intensity II · San Sebastián 41 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× more

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 5.2 on 2020-01-15 — about 710 times the energy of this one.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 32 km NW of Aguadilla, Puerto Rico · 45 km N of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 30 km NNE of this epicentre
  3. 6.1 15 km WNW of San Antonio, Puerto Rico · 40 km NNE of this epicentre
  4. 5.8 4 km E of Moca, Puerto Rico · 37 km NE of this epicentre
  5. 5.2 19 km SW of Stella, Puerto Rico · 3 km SSW of this epicentre

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 18.2085, -67.3578. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 18 km (11 mi) NE earthquakes near Rincón Municipio
Añasco Municipio, PR 25 km (16 mi) ENE earthquakes near Añasco Municipio
Aguada Municipio, PR 26 km (16 mi) NE earthquakes near Aguada Municipio
Hormigueros Municipio, PR 27 km (17 mi) ESE earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 30 km (19 mi) SE earthquakes near Cabo Rojo Municipio
Moca Municipio, PR 35 km (22 mi) ENE earthquakes near Moca Municipio

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

Aftershocks so far

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

  1. 2.3 18 km NW of Puerto Real, Puerto Rico
  2. 2.4 0 km SSW of Lajas, Puerto Rico
  3. 2.2 6 km SE of La Parguera, Puerto Rico
  4. 2.5 4 km WNW of Fuig, Puerto Rico
  5. 2.3 6 km SW of Liborio Negron Torres, Puerto Rico
  6. 2.9 30 km W of Rincón, Puerto Rico
  7. 2.3 5 km ESE of La Parguera, Puerto Rico
  8. 2.7 0 km SW of Lajas, Puerto Rico
  9. 2.2 6 km WSW of Fuig, Puerto Rico
  10. 2.3 6 km SE of La Parguera, Puerto Rico
  11. 2.1 4 km S of Espino, Puerto Rico
  12. 2.0 6 km NE of La Parguera, Puerto Rico
  13. 2.3 5 km ESE of La Parguera, Puerto Rico
  14. 2.0 3 km SSE of Palmarejo, Puerto Rico
  15. 2.3 1 km SW of Palmarejo, 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.