QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Earthquake near Puerto Real, PR

No earthquake was likely felt in Puerto Real in the 24 hours to 1:38 pm AST (17:38 UTC). The last one was M 2.1, 10 km (6 mi) SE, at 11:57 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Puerto Real

This page: a magnitude 2.7 earthquake was recorded 24 km (15 mi) west of Puerto Real, PR, at 2:09 am AST on 10 September 2019 (06:09 UTC), 128 km deep.

USGS: 23 km W of Puerto Real, Puerto Rico

30 km (19 mi) WSW of Mayagüez, PR · 146 km (91 mi) WSW of San Juan, PR

2:09 am AST, Sep 10, 2019 · · 128 km deep · released about 350 lb of TNT

Every earthquake near Puerto Real Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 27 kmHormigueros Municipio 31 kmRincón Municipio 31 kmAñasco Municipio 36 kmAguada Municipio 39 kmSan Germán Municipio 39 kmLajas Municipio 41 kmMoca Municipio 47 kmLas Marías Municipio 48 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
2:09 am AST on 10 September 2019 ()
Where
24 km (15 mi) west of Puerto Real, PR · earthquakes near Puerto Real
Magnitude
M 2.7 (md)
Depth
128 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 27 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2619 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. In Puerto Real, 24 km away, the estimate is intensity I (not felt). 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: Boquerón, Pole Ojea, Cabo Rojo.

How big was it?

This earthquake released about 350 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 43,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 31,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.7× the energy of this one
  4. This earthquake M 2.7 about 350 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 2019-09-05 — about 240 times the energy of this one.

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

  1. 6.3 6 km WNW of Aguadilla, Puerto Rico · 43 km NNE of this epicentre
  2. 5.8 4 km E of Moca, Puerto Rico · 49 km NE of this epicentre
  3. 5.2 19 km SW of Stella, Puerto Rico · 11 km NNE of this epicentre
  4. 5.1 21 km SW of Stella, Puerto Rico · 9 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 18.1010, -67.4100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cabo Rojo Municipio, PR 27 km (17 mi) ESE earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 31 km (19 mi) E earthquakes near Hormigueros Municipio
Rincón Municipio, PR 31 km (19 mi) NNE earthquakes near Rincón Municipio
Añasco Municipio, PR 36 km (22 mi) NE earthquakes near Añasco Municipio
Aguada Municipio, PR 39 km (24 mi) NE earthquakes near Aguada Municipio
San Germán Municipio, PR 39 km (24 mi) E earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.8 Mona Passage
  2. 2.0 2 km NNE of Sabana Grande, Puerto Rico
  3. 1.8 4 km WNW of Hormigueros, Puerto Rico
  4. 1.5 3 km WNW of Palmarejo, Puerto Rico
  5. 2.0 3 km SW of San Sebastián, Puerto Rico
  6. 2.2 7 km S of La Parguera, Puerto Rico
  7. 1.6 4 km ESE of Boquerón, Puerto Rico
  8. 2.0 1 km SE of Maricao, Puerto Rico
  9. 2.2 3 km ESE of Maricao, Puerto Rico
  10. 2.1 20 km SW of Stella, Puerto Rico
  11. 1.9 2 km SSE of Mayagüez, Puerto Rico
  12. 2.1 7 km SE of Espino, Puerto Rico
  13. 2.6 27 km W of Rincón, Puerto Rico
  14. 1.6 6 km WSW of Liborio Negron Torres, Puerto Rico
  15. 1.9 4 km WNW of La Parguera, 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.