QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

Earthquake near La Playa, PR

No earthquake was likely felt in La Playa in the 24 hours to 5:22 pm AST (21:22 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 3.1 earthquake was recorded 2 km (1 mi) southeast of La Playa, PR, at 8:54 pm AST on 8 July 2022 (00:54 UTC), 77 km deep.

USGS: 2 km SE of La Playa, Puerto Rico

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

8:54 pm AST, Jul 8, 2022 · · 77 km deep · released about 1,200 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 11 kmAguada Municipio 12 kmMoca Municipio 16 kmHormigueros Municipio 16 kmLas Marías Municipio 21 kmSan Sebastián Municipio 23 kmSan Germán 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
8:54 pm AST on 8 July 2022 ()
Where
2 km (1 mi) southeast of La Playa, PR · earthquakes near La Playa
Magnitude
M 3.1 (md)
Depth
77 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 1587 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 La Playa, 2 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: Las Marias, Añasco, Espino, Mayagüez, Stella, Luyando.

How big was it?

This earthquake released about 1,200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 280,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,800× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× more

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 5.9 on 2020-01-11 — about 18,000 times the energy of this one.

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 · 44 km NNW of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 19 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 18.2708, -67.1750. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Añasco Municipio, PR 5 km (3 mi) ENE earthquakes near Añasco Municipio
Rincón Municipio, PR 11 km (7 mi) NW earthquakes near Rincón Municipio
Aguada Municipio, PR 12 km (7 mi) N earthquakes near Aguada Municipio
Moca Municipio, PR 16 km (10 mi) NE earthquakes near Moca Municipio
Hormigueros Municipio, PR 16 km (10 mi) SSE earthquakes near Hormigueros 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

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

  1. 2.1 0 km NNE of Indios, Puerto Rico
  2. 2.4 6 km WSW of Fuig, Puerto Rico
  3. 2.6 2 km SW of Indios, Puerto Rico
  4. 2.0 2 km NNE of Yauco, Puerto Rico
  5. 2.3 6 km WSW of La Parguera, Puerto Rico
  6. 2.1 2 km ESE of Palomas, Puerto Rico
  7. 2.0 6 km SW of Guánica, Puerto Rico
  8. 1.9 2 km W of Indios, Puerto Rico
  9. 2.1 Puerto Rico region
  10. 1.8 5 km SE of La Parguera, Puerto Rico
  11. 2.1 4 km SW of Guánica, Puerto Rico
  12. 2.7 1 km NE of Guayanilla, Puerto Rico
  13. 2.0 Puerto Rico region
  14. 1.7 5 km SW of Guánica, Puerto Rico
  15. 1.9 2 km E of Maria Antonia, 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.