Earthquake near Gurabo, PR

No earthquake was likely felt in Gurabo in the 24 hours to 12:58 pm AST (16:58 UTC). The last one was M 4.1, 75 km (47 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Gurabo

This page: a magnitude 2.9 earthquake was recorded 5 km (3 mi) southwest of Gurabo, PR, at 6:36 pm AST on 7 February 2018 (22:36 UTC), 15 km deep.

USGS: 4 km SW of Gurabo, Puerto Rico

in Caguas, PR

6:36 pm AST, Feb 7, 2018 · 2018-02-07 22:36 UTC · 15 km deep · released about 570 lb of TNT

Every earthquake near Gurabo Felt it? Tell USGS Check my area

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: 6:36 pm AST on 7 February 2018 (2018-02-07 22:36 UTC)
Where: 5 km (3 mi) southwest of Gurabo, PR · earthquakes near Gurabo
Magnitude: M 2.9 (md)
Depth: 15 km below the surface
Felt: no reports yet
Nearest: Caguas Municipio, 5 km WSW
Status: Reviewed by a seismologist

USGS · last changed by USGS 3199 days ago · we first saw it 3199 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 25 km (16 mi) from the epicentre. In Gurabo, 5 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.

Likely felt in: Caguas 5 km, intensity II · Jagual 7 km, intensity II · Sumidero 13 km, intensity II · Trujillo Alto 15 km, intensity II · Carolina 18 km, intensity II · Guaynabo 19 km, intensity II · Humacao 20 km, intensity II · Cayey 21 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 570 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 27,000× the energy of this one
Magna, Utah 2020 M 5.7 19,000× the energy of this one
Around the size people start to feel M 3.0 1.7× the energy of this one
This earthquake M 2.9 about 570 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 4.6 on 2016-12-05 — about 420 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

5.1 3 km W of Aguas Buenas, Puerto Rico · 15 km WNW of this epicentre Dec 24, 2010
5.0 3 km N of Brenas, Puerto Rico · 47 km NW of this epicentre Jun 17, 1975

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

Map loads when it scrolls into view

Nearby places

Place	Distance	Direction from the epicentre
Caguas Municipio, PR	5 km (3 mi)	WSW	earthquakes near Caguas Municipio
Gurabo Municipio, PR	6 km (4 mi)	NNE	earthquakes near Gurabo Municipio
San Lorenzo Municipio, PR	9 km (5 mi)	SSE	earthquakes near San Lorenzo Municipio
Juncos Municipio, PR	10 km (6 mi)	E	earthquakes near Juncos Municipio
Trujillo Alto Municipio, PR	13 km (8 mi)	N	earthquakes near Trujillo Alto Municipio
Aguas Buenas Municipio, PR	14 km (9 mi)	WNW	earthquakes near Aguas Buenas Municipio

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

Aftershocks so far

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

1.6 1 km SSW of Mariano Colón, Puerto Rico 09:05 UTC
2.4 13 km SSE of Arroyo, Puerto Rico 05:38 UTC
2.5 13 km S of Jobos, Puerto Rico 02:07 UTC
2.8 15 km NNE of Suárez, Puerto Rico 18:29 UTC
2.5 1 km WNW of Campanilla, Puerto Rico 17:45 UTC
2.8 6 km SE of G. L. Garcia, Puerto Rico 07:20 UTC
2.2 4 km SW of Comerío, Puerto Rico 09:52 UTC
3.0 20 km N of Loíza, Puerto Rico 04:59 UTC
1.6 5 km SSE of Jobos, Puerto Rico 08:32 UTC
2.1 2 km NW of Bayamon, Puerto Rico 04:02 UTC
2.0 10 km S of Salinas, Puerto Rico 07:31 UTC
2.5 5 km SE of Pájaros, Puerto Rico 06:08 UTC
2.8 9 km ENE of San Juan, Puerto Rico 06:00 UTC
2.9 5 km NE of Guaynabo, Puerto Rico 05:23 UTC
2.6 3 km N of Corozal, Puerto Rico 04:19 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 16:58 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.