QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Earthquake near Rincón, PR

No earthquake was likely felt in Rincón in the 24 hours to 12:50 pm AST (16:50 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 2.8 earthquake was recorded 22 km (14 mi) west of Rincón, PR, at 4:39 pm AST on 1 June 2018 (20:39 UTC), 87 km deep.

USGS: 22 km W of Rincón, Puerto Rico

37 km (23 mi) WNW of Mayagüez, PR · 148 km (92 mi) W of San Juan, PR

4:39 pm AST, Jun 1, 2018 · · 87 km deep · released about 420 lb of TNT

Every earthquake near Rincón Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 22 kmAguada Municipio 29 kmAñasco Municipio 35 kmAguadilla Municipio 37 kmMoca Municipio 41 kmHormigueros Municipio 43 kmCabo Rojo Municipio 48 kmIsabela Municipio 50 kmSan Germán Municipio 52 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
4:39 pm AST on 1 June 2018 ()
Where
22 km (14 mi) west of Rincón, PR · earthquakes near Rincón
Magnitude
M 2.8 (md)
Depth
87 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 22 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3085 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 it was probably too small to be felt, even directly above it. In Rincón, 22 km away, the estimate is intensity I (not felt). 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, La Playa.

How big was it?

This earthquake released about 420 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 36,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 26,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.3× the energy of this one
  4. This earthquake M 2.8 about 420 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 4.4 on 2017-10-01 — about 290 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 · 50 km NE of this epicentre
  2. 6.4 32 km NW of Aguadilla, Puerto Rico · 32 km NNE of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 29 km ENE of this epicentre
  4. 6.3 58 km E of Punta Cana, Dominican Republic · 46 km WNW of this epicentre
  5. 6.1 15 km WNW of San Antonio, Puerto Rico · 34 km NE 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 18.3361, -67.4620. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 22 km (14 mi) E earthquakes near Rincón Municipio
Aguada Municipio, PR 29 km (18 mi) E earthquakes near Aguada Municipio
Añasco Municipio, PR 35 km (22 mi) E earthquakes near Añasco Municipio
Aguadilla Municipio, PR 37 km (23 mi) ENE earthquakes near Aguadilla Municipio
Moca Municipio, PR 41 km (25 mi) E earthquakes near Moca Municipio
Hormigueros Municipio, PR 43 km (27 mi) ESE earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.5 16 km WNW of Puerto Real, Puerto Rico
  2. 2.8 20 km WNW of San Antonio, Puerto Rico
  3. 2.6 27 km WNW of Rincón, Puerto Rico
  4. 2.2 14 km WSW of Stella, Puerto Rico
  5. 2.7 43 km NW of San Antonio, Puerto Rico
  6. 1.8 12 km NW of Puerto Real, Puerto Rico
  7. 2.7 32 km NW of Rincón, Puerto Rico
  8. 2.7 4 km ENE of Mayagüez, Puerto Rico
  9. 1.6 7 km WNW of Maricao, Puerto Rico
  10. 2.0 6 km NW of Rincón, Puerto Rico
  11. 2.6 Mona Passage
  12. 2.3 4 km W of Rincón, Puerto Rico
  13. 3.0 53 km NW of Aguadilla, Puerto Rico
  14. 1.6 2 km S of Boquerón, Puerto Rico
  15. 1.8 4 km SSE of Cabo Rojo, 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.