QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Earthquake near Garrochales, PR

No earthquake was likely felt in Garrochales in the 24 hours to 10:13 am AST (14:13 UTC). The last one was M 2.9, 12 km (7 mi) NW, at 2:05 am AST on 13 October 2026, estimated intensity II (weak) in town. Every earthquake near Garrochales

This page: a magnitude 2.8 earthquake was recorded in Garrochales, PR, at 9:12 pm AST on 10 November 2022 (01:12 UTC), 76 km deep.

USGS: 1 km S of Garrochales, Puerto Rico

53 km (33 mi) W of San Juan, PR · 18 km (11 mi) E of Arecibo, PR

9:12 pm AST, Nov 10, 2022 · · 76 km deep · released about 510 lb of TNT

Every earthquake near Garrochales Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Barceloneta Municipio 3 kmManatí Municipio 8 kmFlorida Municipio 8 kmArecibo Municipio 12 kmCiales Municipio 17 kmVega Baja Municipio 18 kmMorovis Municipio 21 kmUtuado Municipio 24 kmVega Alta 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
9:12 pm AST on 10 November 2022 ()
Where
in Garrochales, PR · earthquakes near Garrochales
Magnitude
M 2.8 (md)
Depth
76 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 3 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1462 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. 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: Imbery, Bufalo, Barceloneta, Sabana Hoyos, La Luisa, La Alianza.

How big was it?

This earthquake released about 510 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 21,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 510 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 4.4 on 2018-12-09 — about 230 times the energy of this one.

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

  1. 5.8 12 km N of Garrochales, Puerto Rico · 13 km N of this epicentre
  2. 5.1 3 km W of Aguas Buenas, Puerto Rico · 50 km ESE of this epicentre
  3. 5.0 3 km N of Brenas, Puerto Rico · 25 km ENE 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 18.4418, -66.5650. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Barceloneta Municipio, PR 3 km (2 mi) NNE earthquakes near Barceloneta Municipio
Manatí Municipio, PR 8 km (5 mi) E earthquakes near Manatí Municipio
Florida Municipio, PR 8 km (5 mi) S earthquakes near Florida Municipio
Arecibo Municipio, PR 12 km (7 mi) W earthquakes near Arecibo Municipio
Ciales Municipio, PR 17 km (11 mi) SSE earthquakes near Ciales Municipio
Vega Baja Municipio, PR 18 km (11 mi) E earthquakes near Vega Baja Municipio

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

Aftershocks so far

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

  1. 2.1 7 km S of Lares, Puerto Rico
  2. 1.7 6 km NE of Yauco, Puerto Rico
  3. 2.8 6 km WNW of Santo Domingo, Puerto Rico
  4. 2.3 5 km WNW of Santo Domingo, Puerto Rico
  5. 2.1 3 km S of Adjuntas, Puerto Rico
  6. 2.0 6 km WNW of Santo Domingo, Puerto Rico
  7. 2.6 5 km WNW of Santo Domingo, Puerto Rico
  8. 2.1 1 km WNW of Aguilita, Puerto Rico
  9. 2.4 1 km NNE of Luis Llorens Torres, Puerto Rico
  10. 2.1 0 km NNE of Aguilita, Puerto Rico
  11. 2.9 Puerto Rico region
  12. 2.3 4 km WNW of Santo Domingo, Puerto Rico
  13. 4.2 4 km W of Santo Domingo, Puerto Rico
  14. 3.1 5 km WNW of Santo Domingo, Puerto Rico
  15. 2.2 3 km SW of Peñuelas, 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.