Earthquake near Pueblito del Rio, PR

No earthquake was likely felt in Pueblito del Rio in the 24 hours to 4:39 pm AST (20:39 UTC). The last one was M 4.1, 63 km (39 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 Pueblito del Rio

This page: a magnitude 2.6 earthquake was recorded in Pueblito del Rio, PR, at 12:00 am AST on 4 August 2017 (04:00 UTC), 13 km deep.

USGS: 1 km N of Pueblito del Rio, Puerto Rico

27 km (17 mi) SE of San Juan, PR · 18 km (11 mi) E of Caguas, PR

12:00 am AST, Aug 4, 2017 · 2017-08-04 04:00 UTC · 13 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: 12:00 am AST on 4 August 2017 (2017-08-04 04:00 UTC)
Where: in Pueblito del Rio, PR · earthquakes near Pueblito del Rio
Magnitude: M 2.6 (md)
Depth: 13 km below the surface
Felt: no reports yet
Nearest: Juncos Municipio, 5 km WSW
Status: Reviewed by a seismologist

USGS · last changed by USGS 3387 days ago · we first saw it 3387 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 20 km (12 mi) from the epicentre. 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: Humacao 11 km, intensity II · Río Grande 15 km, intensity II · Jagual 17 km, intensity II · Carolina 18 km, intensity II · Trujillo Alto 19 km, intensity II · Caguas 19 km, intensity II. Estimated for each town centre; each link is that town's own record.

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 4.6 on 2016-12-05 — about 1,100 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

5.1 3 km W of Aguas Buenas, Puerto Rico · 29 km W of this epicentre Dec 24, 2010

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
Juncos Municipio, PR	5 km (3 mi)	WSW	earthquakes near Juncos Municipio
Las Piedras Municipio, PR	6 km (4 mi)	S	earthquakes near Las Piedras Municipio
Canóvanas Municipio, PR	10 km (6 mi)	NNW	earthquakes near Canóvanas Municipio
Gurabo Municipio, PR	13 km (8 mi)	WNW	earthquakes near Gurabo Municipio
Naguabo Municipio, PR	14 km (9 mi)	ESE	earthquakes near Naguabo Municipio
Humacao Municipio, PR	15 km (9 mi)	SE	earthquakes near Humacao Municipio

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

Aftershocks so far

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

2.6 16 km SSE of Punta Santiago, Puerto Rico 11:01 UTC
3.1 Puerto Rico region 11:21 UTC
2.5 5 km E of Bayamon, Puerto Rico 02:20 UTC
3.1 1 km SW of Trujillo Alto, Puerto Rico 22:44 UTC
3.1 2 km ENE of Candelero Arriba, Puerto Rico 03:43 UTC
2.6 1 km NW of Aguas Buenas, Puerto Rico 06:05 UTC
2.3 3 km NNW of Patillas, Puerto Rico 10:14 UTC
2.9 24 km N of Loíza, Puerto Rico 09:32 UTC
2.6 2 km NNW of El Negro, Puerto Rico 23:00 UTC
2.8 1 km NNE of Yabucoa, Puerto Rico 21:25 UTC
3.0 10 km NNW of San Juan, Puerto Rico 16:49 UTC
2.6 6 km NNW of Bairoa, Puerto Rico 00:31 UTC
3.2 4 km WNW of Aguas Claras, Puerto Rico 06:44 UTC
2.0 17 km SE of Emajagua, Puerto Rico 16:42 UTC
2.1 14 km SE of El Negro, Puerto Rico 13:18 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 20:39 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.