QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Rincón, PR

No earthquake was likely felt in Rincón in the 24 hours to 10:45 am AST (14:45 UTC). The last one was M 3.4, 53 km (33 mi) NNE, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Rincón

This page: a magnitude 2.1 earthquake was recorded 3 km (2 mi) east-northeast of Rincón, PR, at 4:46 pm AST on 28 October 2019 (20:46 UTC), 28 km deep.

USGS: 3 km ENE of Rincón, Puerto Rico

19 km (12 mi) NNW of Mayagüez, PR · 123 km (76 mi) W of San Juan, PR

4:46 pm AST, Oct 28, 2019 · · 28 km deep · released about 41 lb of TNT

Every earthquake near Rincón Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 3 kmAguada Municipio 5 kmAñasco Municipio 12 kmMoca Municipio 16 kmAguadilla Municipio 16 kmIsabela Municipio 26 kmHormigueros Municipio 27 kmSan Sebastián Municipio 27 kmLas Marías 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
4:46 pm AST on 28 October 2019 ()
Where
3 km (2 mi) east-northeast of Rincón, PR · earthquakes near Rincón
Magnitude
M 2.1 (md)
Depth
28 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 3 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2571 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Rincón, 3 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.

Earthquakes near other towns within 30 km: Stella, Aguada, Luyando, La Playa, Las Marias, Aguadilla.

How big was it?

This earthquake released about 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 4.3 on 2019-09-05 — about 2,100 times the energy of this one.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 24 km NNW of San Antonio, Puerto Rico · 39 km N of this epicentre
  2. 6.4 32 km NW of Aguadilla, Puerto Rico · 33 km NNW of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 10 km N of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 22 km N of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 32 km N 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 18.3553, -67.2251. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 3 km (2 mi) SW earthquakes near Rincón Municipio
Aguada Municipio, PR 5 km (3 mi) ENE earthquakes near Aguada Municipio
Añasco Municipio, PR 12 km (8 mi) SE earthquakes near Añasco Municipio
Moca Municipio, PR 16 km (10 mi) E earthquakes near Moca Municipio
Aguadilla Municipio, PR 16 km (10 mi) NNE earthquakes near Aguadilla Municipio
Isabela Municipio, PR 26 km (16 mi) ENE earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.2 5 km SW of La Parguera, Puerto Rico
  2. 2.5 23 km SW of Stella, Puerto Rico
  3. 1.9 4 km ENE of Hormigueros, Puerto Rico
  4. 2.8 7 km NNE of Hatillo, Puerto Rico
  5. 2.5 37 km NNW of San Antonio, Puerto Rico
  6. 1.9 1 km ENE of Sabana Grande, Puerto Rico
  7. 2.3 30 km W of Rincón, Puerto Rico
  8. 1.8 4 km NW of Cabo Rojo, Puerto Rico
  9. 2.3 3 km WNW of Hormigueros, Puerto Rico
  10. 2.0 3 km SSE of Palmarejo, Puerto Rico
  11. 2.1 30 km NW of Rincón, Puerto Rico
  12. 2.4 21 km NNW of Camuy, Puerto Rico
  13. 2.5 4 km NW of Puerto Real, Puerto Rico
  14. 1.9 15 km W of Puerto Real, Puerto Rico
  15. 2.5 11 km NNW of Isabela, 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.