QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near Piedra Gorda, PR

No earthquake was likely felt in Piedra Gorda in the 24 hours to 1:02 pm AST (17:02 UTC). The last one was M 3.4, 42 km (26 mi) NNW, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Piedra Gorda

This page: a magnitude 1.9 earthquake was recorded 5 km (3 mi) southeast of Piedra Gorda, PR, at 6:18 am AST on 23 June 2019 (10:18 UTC), 13 km deep.

USGS: 4 km SE of Piedra Gorda, Puerto Rico

14 km (9 mi) WSW of Arecibo, PR · 84 km (52 mi) W of San Juan, PR

6:18 am AST, Jun 23, 2019 · · 13 km deep · released about 22 lb of TNT

Every earthquake near Piedra Gorda Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Camuy Municipio 5 kmHatillo Municipio 7 kmQuebradillas Municipio 11 kmLares Municipio 14 kmSan Sebastián Municipio 14 kmIsabela Municipio 19 kmArecibo Municipio 19 kmUtuado Municipio 22 kmLas Marías Municipio 23 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
6:18 am AST on 23 June 2019 ()
Where
5 km (3 mi) southeast of Piedra Gorda, PR · earthquakes near Piedra Gorda
Magnitude
M 1.9 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Camuy Municipio, 5 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2698 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 7 km (4 mi) from the epicentre. In Piedra Gorda, 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.

Earthquakes near other towns within 30 km: Quebrada, Rafael Capo, Rafael Gonzalez, Camuy, Cacao, Hatillo.

How big was it?

This earthquake released about 22 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 680,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 480,000× the energy of this one
  3. Around the size people start to feel M 3.0 43× the energy of this one
  4. This earthquake M 1.9 about 22 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 24 km NNW of San Antonio, Puerto Rico · 48 km NW of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 38 km W of this epicentre
  3. 6.1 15 km WNW of San Antonio, Puerto Rico · 43 km WNW of this epicentre
  4. 6.1 18 km NNW of San Antonio, Puerto Rico · 43 km NW of this epicentre
  5. 5.8 12 km N of Garrochales, Puerto Rico · 36 km ENE 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 18.4013, -66.8553. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Camuy Municipio, PR 5 km (3 mi) N earthquakes near Camuy Municipio
Hatillo Municipio, PR 7 km (5 mi) NE earthquakes near Hatillo Municipio
Quebradillas Municipio, PR 11 km (7 mi) NW earthquakes near Quebradillas Municipio
Lares Municipio, PR 14 km (9 mi) S earthquakes near Lares Municipio
San Sebastián Municipio, PR 14 km (9 mi) WSW earthquakes near San Sebastián Municipio
Isabela Municipio, PR 19 km (12 mi) WNW earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 1.8 1 km ESE of Stella, Puerto Rico
  2. 2.0 6 km NNE of Sabana Eneas, Puerto Rico
  3. 2.3 3 km ENE of Espino, Puerto Rico
  4. 2.4 26 km N of Arecibo, Puerto Rico
  5. 1.9 8 km N of Yauco, Puerto Rico
  6. 2.5 5 km NNE of Isabela, Puerto Rico
  7. 2.1 2 km E of Mayagüez, Puerto Rico
  8. 1.7 5 km NNE of Sabana Grande, Puerto Rico
  9. 1.8 4 km SSW of Añasco, Puerto Rico
  10. 1.9 6 km NW of Adjuntas, Puerto Rico
  11. 1.6 5 km NNE of Sabana Grande, Puerto Rico
  12. 2.4 5 km NNE of Sabana Grande, Puerto Rico
  13. 1.6 7 km ESE of Las Marías, Puerto Rico
  14. 2.0 8 km W of Maricao, Puerto Rico
  15. 1.6 6 km NNE of Ponce, 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.