QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Rincón, PR

No earthquake was likely felt in Rincón in the 24 hours to 5:01 pm AST (21:01 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 2.6 earthquake was recorded 29 km (18 mi) west of Rincón, PR, at 12:22 am AST on 2 July 2018 (04:22 UTC), 3.0 km deep.

USGS: 29 km W of Rincón, Puerto Rico

45 km (28 mi) WNW of Mayagüez, PR · 104 km (65 mi) WNW of Ponce, PR

12:22 am AST, Jul 2, 2018 · · 3.0 km deep · released about 230 lb of TNT

Every earthquake near Rincón Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 29 kmAguada Municipio 36 kmAguadilla Municipio 42 kmAñasco Municipio 43 kmMoca Municipio 47 kmMayagüez Municipio 50 kmHormigueros Municipio 51 kmIsabela Municipio 55 kmCabo Rojo Municipio 56 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
12:22 am AST on 2 July 2018 ()
Where
29 km (18 mi) west of Rincón, PR · earthquakes near Rincón
Magnitude
M 2.6 (md)
Depth
3.0 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 29 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2967 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 23 km (14 mi) from the epicentre. In Rincón, 29 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.

How big was it?

This earthquake released about 230 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 65,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 46,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.1× the energy of this one
  4. This earthquake M 2.6 about 230 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 520 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 32 km NW of Aguadilla, Puerto Rico · 31 km NNE of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 34 km ENE of this epicentre
  3. 6.3 58 km E of Punta Cana, Dominican Republic · 38 km WNW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 37 km ENE of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 47 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 18.3758, -67.5258. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 29 km (18 mi) E earthquakes near Rincón Municipio
Aguada Municipio, PR 36 km (22 mi) E earthquakes near Aguada Municipio
Aguadilla Municipio, PR 42 km (26 mi) ENE earthquakes near Aguadilla Municipio
Añasco Municipio, PR 43 km (27 mi) ESE earthquakes near Añasco Municipio
Moca Municipio, PR 47 km (29 mi) E earthquakes near Moca Municipio
Mayagüez Municipio, PR 50 km (31 mi) SW earthquakes near Mayagüez Municipio

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

Aftershocks so far

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

  1. 2.5 5 km W of Hormigueros, Puerto Rico
  2. 2.5 42 km NW of Rincón, Puerto Rico
  3. 2.6 7 km SSW of La Playa, Puerto Rico
  4. 2.1 0 km WSW of Puerto Real, Puerto Rico
  5. 3.1 71 km WSW of Stella, Puerto Rico
  6. 2.7 54 km WSW of Stella, Puerto Rico
  7. 2.8 53 km W of Puerto Real, Puerto Rico
  8. 2.1 43 km WSW of Stella, Puerto Rico
  9. 3.2 69 km SE of Punta Cana, Dominican Republic
  10. 2.5 19 km W of Rincón, Puerto Rico
  11. 2.0 4 km SSW of Añasco, Puerto Rico
  12. 2.0 3 km N of Puerto Real, Puerto Rico
  13. 1.9 12 km W of Pole Ojea, Puerto Rico
  14. 2.4 49 km ESE of Punta Cana, Dominican Republic
  15. 2.0 5 km W of Mayagüez, 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.