QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3Md

Earthquake near La Playa, PR

No earthquake was likely felt in La Playa in the 24 hours to 5:25 pm AST (21:25 UTC). The last one was M 2.9, 28 km (17 mi) WSW, at 12:57 am AST on 19 October 2026, estimated intensity II (weak) in town. Every earthquake near La Playa

This page: a magnitude 2.3 earthquake was recorded 3 km (2 mi) south-southeast of La Playa, PR, at 8:07 pm AST on 31 October 2016 (00:07 UTC), 114 km deep.

USGS: 2 km SSE of La Playa, Puerto Rico

8 km (5 mi) NNW of Mayagüez, PR · 118 km (73 mi) W of San Juan, PR

8:07 pm AST, Oct 31, 2016 · · 114 km deep · released about 85 lb of TNT

Every earthquake near La Playa Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Añasco Municipio 5 kmRincón Municipio 12 kmAguada Municipio 12 kmHormigueros Municipio 16 kmMoca Municipio 16 kmLas Marías Municipio 21 kmSan Germán Municipio 23 kmSan Sebastián Municipio 23 kmAguadilla Municipio 24 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
8:07 pm AST on 31 October 2016 ()
Where
3 km (2 mi) south-southeast of La Playa, PR · earthquakes near La Playa
Magnitude
M 2.3 (Md)
Depth
114 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 5 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3663 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 La Playa, 3 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: Añasco, Las Marias, Espino, Mayagüez, Stella, Luyando.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 8 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 24 km NNW of San Antonio, Puerto Rico · 48 km N of this epicentre
  2. 6.4 32 km NW of Aguadilla, Puerto Rico · 45 km NNW of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 20 km NNW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 32 km N of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 41 km N 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 18.2647, -67.1720. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Añasco Municipio, PR 5 km (3 mi) ENE earthquakes near Añasco Municipio
Rincón Municipio, PR 12 km (7 mi) NW earthquakes near Rincón Municipio
Aguada Municipio, PR 12 km (8 mi) N earthquakes near Aguada Municipio
Hormigueros Municipio, PR 16 km (10 mi) SSE earthquakes near Hormigueros Municipio
Moca Municipio, PR 16 km (10 mi) NE earthquakes near Moca Municipio
Las Marías Municipio, PR 21 km (13 mi) ESE earthquakes near Las Marías Municipio

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

Aftershocks so far

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

  1. 1.9 3 km ESE of Las Marías, Puerto Rico
  2. 2.3 10 km NNW of Puerto Real, Puerto Rico
  3. 2.7 6 km NNW of Santo Domingo, Puerto Rico
  4. 2.4 8 km WSW of Mayagüez, Puerto Rico
  5. 1.6 5 km SSW of Adjuntas, Puerto Rico
  6. 2.4 3 km WSW of La Parguera, Puerto Rico
  7. 1.7 14 km W of Puerto Real, Puerto Rico
  8. 2.3 9 km WSW of Puerto Real, Puerto Rico
  9. 2.7 35 km NW of Aguadilla, Puerto Rico
  10. 2.2 3 km NW of Hormigueros, Puerto Rico
  11. 2.4 32 km W of Rincón, Puerto Rico
  12. 2.9 6 km SSW of La Playa, Puerto Rico
  13. 2.8 6 km SSW of La Playa, Puerto Rico
  14. 1.6 3 km W of Liborio Negron Torres, Puerto Rico
  15. 2.2 Mona Passage

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.