QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Puerto Real, PR

No earthquake was likely felt in Puerto Real in the 24 hours to 4:07 pm AST (20:07 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 2.1 earthquake was recorded 3 km (2 mi) east-southeast of Puerto Real, PR, at 9:58 am AST on 15 August 2024 (13:58 UTC), 25 km deep.

USGS: 2 km ESE of Puerto Real, Puerto Rico

16 km (10 mi) S of Mayagüez, PR · 122 km (76 mi) WSW of San Juan, PR

9:58 am AST, Aug 15, 2024 · · 25 km deep · released about 49 lb of TNT

Every earthquake near Puerto Real Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 7 kmHormigueros Municipio 10 kmSan Germán Municipio 14 kmLajas Municipio 16 kmSabana Grande Municipio 23 kmAñasco Municipio 25 kmLas Marías Municipio 27 kmMaricao Municipio 27 kmGuánica Municipio 28 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
9:58 am AST on 15 August 2024 ()
Where
3 km (2 mi) east-southeast of Puerto Real, PR · earthquakes near Puerto Real
Magnitude
M 2.1 (md)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 7 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 818 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. In Puerto Real, 3 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: Cabo Rojo, Boquerón, Monte Grande, Sabana Eneas, Palmarejo, Hormigueros.

How big was it?

This earthquake released about 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× 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 49 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 6.4 on 2020-01-07 — about 2,500,000 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 N of this epicentre
  2. 5.8 4 km E of Moca, Puerto Rico · 39 km NNE of this epicentre
  3. 5.2 19 km SW of Stella, Puerto Rico · 26 km WNW of this epicentre
  4. 5.1 21 km SW of Stella, Puerto Rico · 25 km WNW 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 18.0608, -67.1643. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cabo Rojo Municipio, PR 7 km (5 mi) SSW earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 10 km (6 mi) NNE earthquakes near Hormigueros Municipio
San Germán Municipio, PR 14 km (9 mi) ENE earthquakes near San Germán Municipio
Lajas Municipio, PR 16 km (10 mi) SE earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 23 km (14 mi) E earthquakes near Sabana Grande Municipio
Añasco Municipio, PR 25 km (16 mi) N earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 3.4 4 km ESE of La Parguera, Puerto Rico
  2. 3.0 4 km E of La Parguera, Puerto Rico
  3. 3.1 4 km ESE of La Parguera, Puerto Rico
  4. 2.6 3 km SE of Indios, Puerto Rico
  5. 2.7 1 km W of Indios, Puerto Rico
  6. 2.9 4 km E of La Parguera, Puerto Rico
  7. 2.3 2 km E of Magas Arriba, Puerto Rico
  8. 2.6 9 km NNW of Puerto Real, Puerto Rico
  9. 2.7 24 km S of La Parguera, Puerto Rico
  10. 2.4 6 km WSW of Fuig, Puerto Rico
  11. 2.4 15 km SSW of Guánica, Puerto Rico
  12. 2.8 7 km ESE of La Parguera, Puerto Rico
  13. 2.4 4 km E of La Parguera, Puerto Rico
  14. 2.3 5 km ENE of La Parguera, Puerto Rico
  15. 2.8 5 km E 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.