QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near Quebrada, PR

No earthquake was likely felt in Quebrada in the 24 hours to 11:25 am AST (15:25 UTC). The last one was M 3.4, 52 km (33 mi) NNW, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Quebrada

This page: a magnitude 2.4 earthquake was recorded in Quebrada, PR, at 4:57 am AST on 17 October 2023 (08:57 UTC), 19 km deep.

USGS: 1 km N of Quebrada, Puerto Rico

14 km (9 mi) SW of Arecibo, PR · 81 km (51 mi) W of San Juan, PR

4:57 am AST, Oct 17, 2023 · · 19 km deep · released about 120 lb of TNT

Every earthquake near Quebrada Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 9 kmCamuy Municipio 9 kmLares Municipio 11 kmSan Sebastián Municipio 15 kmQuebradillas Municipio 15 kmUtuado Municipio 17 kmArecibo Municipio 18 kmLas Marías Municipio 22 kmAdjuntas 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
4:57 am AST on 17 October 2023 ()
Where
in Quebrada, PR · earthquakes near Quebrada
Magnitude
M 2.4 (md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 9 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1121 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 9 km (6 mi) from the epicentre. 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 9 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 92,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.2× the energy of this one
  4. This earthquake M 2.4 about 120 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 1,000,000 times the energy of this one.

Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:

  1. 6.3 6 km WNW of Aguadilla, Puerto Rico · 41 km WNW of this epicentre
  2. 6.1 15 km WNW of San Antonio, Puerto Rico · 47 km WNW of this epicentre
  3. 6.1 18 km NNW of San Antonio, Puerto Rico · 47 km NW of this epicentre
  4. 5.8 12 km N of Garrochales, Puerto Rico · 36 km NE of this epicentre
  5. 5.8 4 km E of Moca, Puerto Rico · 25 km W 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 18.3660, -66.8332. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hatillo Municipio, PR 9 km (6 mi) NNE earthquakes near Hatillo Municipio
Camuy Municipio, PR 9 km (6 mi) NNW earthquakes near Camuy Municipio
Lares Municipio, PR 11 km (7 mi) SSW earthquakes near Lares Municipio
San Sebastián Municipio, PR 15 km (9 mi) WSW earthquakes near San Sebastián Municipio
Quebradillas Municipio, PR 15 km (9 mi) NW earthquakes near Quebradillas Municipio
Utuado Municipio, PR 17 km (11 mi) SE earthquakes near Utuado Municipio

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

Aftershocks so far

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

  1. 2.4 1 km NNE of Indios, Puerto Rico
  2. 2.1 1 km WSW of Guayanilla, Puerto Rico
  3. 2.6 3 km WSW of Guánica, Puerto Rico
  4. 2.4 2 km W of Guayanilla, Puerto Rico
  5. 2.5 1 km NE of Indios, Puerto Rico
  6. 2.1 2 km W of Guayanilla, Puerto Rico
  7. 2.8 Puerto Rico region
  8. 2.9 0 km NE of Indios, Puerto Rico
  9. 2.3 1 km NE of Indios, Puerto Rico
  10. 2.0 Puerto Rico region
  11. 3.5 1 km SSE of Indios, Puerto Rico
  12. 2.0 2 km W of Guayanilla, Puerto Rico
  13. 2.6 Puerto Rico region
  14. 1.9 Puerto Rico region
  15. 2.4 2 km NNE of Indios, 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.