QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Carrizales, PR

No earthquake was likely felt in Carrizales in the 24 hours to 4:28 pm AST (20:28 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 2.6 earthquake was recorded 12 km (7 mi) north of Carrizales, PR, at 9:55 pm AST on 12 April 2023 (01:55 UTC), 21 km deep.

USGS: 11 km N of Carrizales, Puerto Rico

78 km (48 mi) WNW of San Juan, PR · 15 km (9 mi) NNW of Arecibo, PR

9:55 pm AST, Apr 12, 2023 · · 21 km deep · released about 210 lb of TNT

Every earthquake near Carrizales Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hatillo Municipio 16 kmCamuy Municipio 18 kmArecibo Municipio 20 kmQuebradillas Municipio 21 kmBarceloneta Municipio 26 kmIsabela Municipio 28 kmFlorida Municipio 33 kmManatí Municipio 34 kmSan Sebastián Municipio 35 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
9:55 pm AST on 12 April 2023 ()
Where
12 km (7 mi) north of Carrizales, PR · earthquakes near Carrizales
Magnitude
M 2.6 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Hatillo Municipio, 16 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1309 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 11 km (7 mi) from the epicentre. In Carrizales, 12 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: Hatillo, Camuy, Arecibo, Corcovado, Rafael Gonzalez, Rafael Capo.

How big was it?

This earthquake released about 210 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 72,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 51,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.6× the energy of this one
  4. This earthquake M 2.6 about 210 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 580 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 24 km NNW of San Antonio, Puerto Rico · 45 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 · 48 km W of this epicentre
  4. 6.1 18 km NNW of San Antonio, Puerto Rico · 43 km W 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 18.5862, -66.7755. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hatillo Municipio, PR 16 km (10 mi) S earthquakes near Hatillo Municipio
Camuy Municipio, PR 18 km (11 mi) SSW earthquakes near Camuy Municipio
Arecibo Municipio, PR 20 km (12 mi) SSE earthquakes near Arecibo Municipio
Quebradillas Municipio, PR 21 km (13 mi) SW earthquakes near Quebradillas Municipio
Barceloneta Municipio, PR 26 km (16 mi) ESE earthquakes near Barceloneta Municipio
Isabela Municipio, PR 28 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. 2.5 3 km NNE of Juncal, Puerto Rico
  2. 2.8 19 km N of Garrochales, Puerto Rico
  3. 3.3 Puerto Rico region
  4. 3.1 45 km N of Tierras Nuevas Poniente, Puerto Rico
  5. 2.3 3 km S of Las Mar?as, Puerto Rico
  6. 2.1 5 km S of Utuado, Puerto Rico
  7. 3.3 31 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 3.3 7 km NNW of Brenas, Puerto Rico
  9. 2.2 4 km ENE of Maricao, Puerto Rico
  10. 3.2 1 km NE of Hatillo, Puerto Rico
  11. 2.0 8 km S of Lares, Puerto Rico
  12. 2.9 7 km NE of Maricao, Puerto Rico
  13. 2.1 Puerto Rico region
  14. 3.1 Puerto Rico region
  15. 2.7 4 km SSE of Ciales, 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.