QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Lares, PR

No earthquake was likely felt in Lares in the 24 hours to 10:10 am AST (14:10 UTC). The last one was M 3.1, 39 km (24 mi) S, at 3:58 pm AST on 31 October 2026, estimated intensity II (weak) in town. Every earthquake near Lares

This page: a magnitude 2.1 earthquake was recorded 7 km (4 mi) south of Lares, PR, at 11:56 am AST on 11 October 2022 (15:56 UTC), 14 km deep. 1 person has reported feeling it to USGS.

USGS: 7 km S of Lares, Puerto Rico

87 km (54 mi) WSW of San Juan, PR · 29 km (18 mi) SSW of Arecibo, PR

11:56 am AST, Oct 11, 2022 · · 14 km deep · released about 46 lb of TNT

Every earthquake near Lares Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lares Municipio 5 kmMaricao Municipio 9 kmLas Marías Municipio 11 kmAdjuntas Municipio 13 kmSan Sebastián Municipio 15 kmYauco Municipio 16 kmUtuado Municipio 18 kmSabana Grande Municipio 18 kmSan Germán Municipio 22 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
11:56 am AST on 11 October 2022 ()
Where
7 km (4 mi) south of Lares, PR · earthquakes near Lares
Magnitude
M 2.1 (md)
Depth
14 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Lares Municipio, 5 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1492 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 11 km (7 mi) from the epicentre. In Lares, 7 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.

Likely felt in: Lares 7 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 46 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 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 2,600,000 times the energy of this one.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 6.3 6 km WNW of Aguadilla, Puerto Rico · 43 km WNW of this epicentre
  2. 5.8 12 km N of Garrochales, Puerto Rico · 49 km NE of this epicentre
  3. 5.8 4 km E of Moca, Puerto Rico · 28 km NW 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 18.2310, -66.8703. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lares Municipio, PR 5 km (3 mi) N earthquakes near Lares Municipio
Maricao Municipio, PR 9 km (6 mi) SW earthquakes near Maricao Municipio
Las Marías Municipio, PR 11 km (7 mi) W earthquakes near Las Marías Municipio
Adjuntas Municipio, PR 13 km (8 mi) ESE earthquakes near Adjuntas Municipio
San Sebastián Municipio, PR 15 km (9 mi) NW earthquakes near San Sebastián Municipio
Yauco Municipio, PR 16 km (10 mi) S earthquakes near Yauco Municipio

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

Aftershocks so far

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

  1. 2.5 5 km SSW of Indios, Puerto Rico
  2. 2.6 4 km SSE of Maria Antonia, Puerto Rico
  3. 2.5 2 km SSW of Guánica, Puerto Rico
  4. 2.0 5 km E of La Parguera, Puerto Rico
  5. 2.7 4 km S of Potala Pastillo, Puerto Rico
  6. 2.5 4 km SSW of Potala Pastillo, Puerto Rico
  7. 2.4 3 km SSE of Maria Antonia, Puerto Rico
  8. 2.3 6 km SW of Guánica, Puerto Rico
  9. 2.6 8 km SSW of Tallaboa, Puerto Rico
  10. 2.6 8 km SSE of Guánica, Puerto Rico
  11. 2.3 3 km SE of Indios, Puerto Rico
  12. 2.0 2 km E of Tallaboa, Puerto Rico
  13. 1.7 2 km SE of Yauco, Puerto Rico
  14. 1.9 4 km WSW of Boquerón, Puerto Rico
  15. 2.3 4 km SW of Guánica, 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.