QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Carrizales, PR

No earthquake was likely felt in Carrizales in the 24 hours to 12:55 pm AST (16:55 UTC). The last one was M 3.4, 43 km (27 mi) NW, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Carrizales

This page: a magnitude 2.9 earthquake was recorded 9 km (6 mi) north-northeast of Carrizales, PR, at 6:08 am AST on 3 September 2024 (10:08 UTC), 16 km deep.

USGS: 8 km NNE of Carrizales, Puerto Rico

12 km (8 mi) NNW of Arecibo, PR · 76 km (47 mi) WNW of San Juan, PR

6:08 am AST, Sep 3, 2024 · · 16 km deep · released about 610 lb of TNT

Every earthquake near Carrizales Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 14 kmCamuy Municipio 16 kmArecibo Municipio 17 kmQuebradillas Municipio 20 kmBarceloneta Municipio 24 kmIsabela Municipio 27 kmFlorida Municipio 30 kmManatí Municipio 32 kmUtuado Municipio 33 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
6:08 am AST on 3 September 2024 ()
Where
9 km (6 mi) north-northeast of Carrizales, PR · earthquakes near Carrizales
Magnitude
M 2.9 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 14 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 799 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, people at rest would likely notice it out to about 26 km (16 mi) from the epicentre. In Carrizales, 9 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: Hatillo 10 km, intensity II · Arecibo 11 km, intensity II · Quebradillas 20 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 610 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 25,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 610 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 200 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 · 47 km WNW of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 49 km WSW of this epicentre
  3. 6.1 15 km WNW of San Antonio, Puerto Rico · 49 km W of this epicentre
  4. 6.1 18 km NNW of San Antonio, Puerto Rico · 44 km WNW of this epicentre
  5. 5.8 12 km N of Garrochales, Puerto Rico · 22 km E 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 18.5597, -66.7690. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hatillo Municipio, PR 14 km (8 mi) SSW earthquakes near Hatillo Municipio
Camuy Municipio, PR 16 km (10 mi) SW earthquakes near Camuy Municipio
Arecibo Municipio, PR 17 km (11 mi) SE earthquakes near Arecibo Municipio
Quebradillas Municipio, PR 20 km (12 mi) WSW earthquakes near Quebradillas Municipio
Barceloneta Municipio, PR 24 km (15 mi) ESE earthquakes near Barceloneta Municipio
Isabela Municipio, PR 27 km (17 mi) WSW earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 3.2 10 km NNW of Garrochales, Puerto Rico
  2. 2.6 17 km N of Hatillo, Puerto Rico
  3. 2.9 17 km N of Isabela, Puerto Rico
  4. 2.8 16 km N of Tierras Nuevas Poniente, Puerto Rico
  5. 2.9 9 km NNE of Brenas, Puerto Rico
  6. 2.6 5 km NNW of Arecibo, Puerto Rico
  7. 2.3 4 km SSW of Adjuntas, Puerto Rico
  8. 2.5 5 km WSW of Ciales, Puerto Rico
  9. 3.2 5 km SSE of Mora, Puerto Rico
  10. 3.5 54 km N of Hatillo, Puerto Rico
  11. 2.1 4 km ESE of Las Marías, Puerto Rico
  12. 2.7 10 km SSE of Lares, Puerto Rico
  13. 2.0 2 km S of Adjuntas, Puerto Rico
  14. 3.6 0 km S of Rafael Hernandez, Puerto Rico
  15. 2.7 15 km NNW of Garrochales, 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.