54 km W of Rincón, Puerto Rico

Yes. A magnitude 2.6 earthquake was recorded 54 km W of Rincón, Puerto Rico, at 1:06 am AST on 5 July 2018 (05:06 UTC), 89 km deep.

2018-07-05 05:06 UTC · 89 km deep · released about 220 lb of TNT

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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: 2018-07-05 05:06 UTC
Magnitude: M 2.6 (md)
Depth: 89 km below the surface
Felt: no reports yet
Nearest: Mayagüez Municipio, 36 km SSW
Status: Reviewed by a seismologist

USGS · last changed by USGS 2967 days ago · 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 it was probably too small to be felt, even directly above it. 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 220 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.

Mineral, Virginia 2011 M 5.8 68,000× the energy of this one
Magna, Utah 2020 M 5.7 48,000× the energy of this one
Around the size people start to feel M 3.0 4.3× the energy of this one
This earthquake M 2.6 about 220 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 540 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

6.4 32 km NW of Aguadilla, Puerto Rico · 48 km ENE of this epicentre Feb 10, 1920
6.3 58 km E of Punta Cana, Dominican Republic · 17 km NW of this epicentre Dec 18, 1922
5.2 19 km SW of Stella, Puerto Rico · 46 km ESE of this epicentre Dec 17, 2011
5.1 21 km SW of Stella, Puerto Rico · 47 km ESE of this epicentre Dec 17, 2011

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

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Epicentre 18.3800, -67.7595. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction from the epicentre
Mayagüez Municipio, PR	36 km (22 mi)	SSW	earthquakes near Mayagüez Municipio
Rincón Municipio, PR	54 km (33 mi)	E	earthquakes near Rincón Municipio
Aguada Municipio, PR	61 km (38 mi)	E	earthquakes near Aguada Municipio
Aguadilla Municipio, PR	66 km (41 mi)	E	earthquakes near Aguadilla Municipio
Añasco Municipio, PR	67 km (42 mi)	E	earthquakes near Añasco Municipio
Moca Municipio, PR	72 km (45 mi)	E	earthquakes near Moca 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.

3.0 58 km ESE of Punta Cana, Dominican Republic 12:55 UTC
2.4 40 km WNW of Rincón, Puerto Rico 02:15 UTC
2.6 39 km WSW of Stella, Puerto Rico 01:37 UTC
2.3 53 km W of Rincón, Puerto Rico 01:01 UTC
2.9 56 km WSW of Stella, Puerto Rico 17:11 UTC
3.1 68 km WSW of Stella, Puerto Rico 05:31 UTC
3.1 35 km SE of Punta Cana, Dominican Republic 00:10 UTC
2.2 18 km W of Rincón, Puerto Rico 01:57 UTC
2.5 42 km NW of Rincón, Puerto Rico 21:49 UTC
3.0 56 km WNW of Rincón, Puerto Rico 19:53 UTC
2.8 63 km W of Puerto Real, Puerto Rico 04:03 UTC
3.3 33 km WSW of Stella, Puerto Rico 21:12 UTC
2.8 43 km SSE of Punta Cana, Dominican Republic 08:41 UTC
3.1 57 km E of Punta Cana, Dominican Republic 02:26 UTC
3.2 72 km W of Puerto Real, Puerto Rico 04:30 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 20:12 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

The official USGS event page — the source of record for every value above
Did you feel it? Report it to USGS — reports go to USGS, not to us
ShakeMap for this event, when USGS has produced one

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