QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Aguada, PR

No earthquake was likely felt in Aguada in the 24 hours to 11:29 am AST (15:29 UTC). The last one was M 3.5, 7 km (5 mi) ENE, at 12:03 am AST on 6 November 2026, estimated intensity II (weak) in town. Every earthquake near Aguada

This page: a magnitude 2.1 earthquake was recorded 8 km (5 mi) west-northwest of Aguada, PR, at 7:51 pm AST on 2 May 2019 (23:51 UTC), 12 km deep.

USGS: 8 km WNW of Aguada, Puerto Rico

27 km (17 mi) NNW of Mayagüez, PR · 126 km (78 mi) W of San Juan, PR

7:51 pm AST, May 2, 2019 · · 12 km deep · released about 51 lb of TNT

Every earthquake near Aguada Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 9 kmAguada Municipio 9 kmAguadilla Municipio 14 kmMoca Municipio 19 kmAñasco Municipio 20 kmIsabela Municipio 27 kmSan Sebastián Municipio 32 kmHormigueros Municipio 35 kmQuebradillas Municipio 35 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
7:51 pm AST on 2 May 2019 ()
Where
8 km (5 mi) west-northwest of Aguada, PR · earthquakes near Aguada
Magnitude
M 2.1 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 9 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2749 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 13 km (8 mi) from the epicentre. In Aguada, 8 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: Aguada 8 km, intensity II · Rincón 9 km, intensity II · Aguadilla 11 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 51 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 4.3 on 2017-10-14 — about 1,700 times the energy of this one.

Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 24 km NNW of San Antonio, Puerto Rico · 32 km NNE of this epicentre
  2. 6.4 32 km NW of Aguadilla, Puerto Rico · 26 km NNW of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 5 km ENE of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 15 km N of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 26 km NNE 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 18.4168, -67.2561. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 9 km (5 mi) S earthquakes near Rincón Municipio
Aguada Municipio, PR 9 km (5 mi) ESE earthquakes near Aguada Municipio
Aguadilla Municipio, PR 14 km (9 mi) ENE earthquakes near Aguadilla Municipio
Moca Municipio, PR 19 km (12 mi) ESE earthquakes near Moca Municipio
Añasco Municipio, PR 20 km (12 mi) SE earthquakes near Añasco Municipio
Isabela Municipio, PR 27 km (17 mi) ENE earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.2 18 km NW of Aguadilla, Puerto Rico
  2. 1.9 6 km SE of Maricao, Puerto Rico
  3. 2.1 23 km WNW of Puerto Real, Puerto Rico
  4. 2.0 4 km ENE of Las Marías, Puerto Rico
  5. 2.1 7 km SW of Mayagüez, Puerto Rico
  6. 2.2 7 km WSW of Mayagüez, Puerto Rico
  7. 2.4 6 km NNE of Hatillo, Puerto Rico
  8. 1.7 10 km N of Hatillo, Puerto Rico
  9. 2.3 2 km NE of Rincón, Puerto Rico
  10. 2.1 6 km SE of Maricao, Puerto Rico
  11. 2.8 20 km SW of Stella, Puerto Rico
  12. 2.3 19 km NW of San Antonio, Puerto Rico
  13. 2.4 23 km NW of Rincón, Puerto Rico
  14. 2.1 1 km NW of Maricao, Puerto Rico
  15. 2.2 9 km WSW 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.