QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Camuy, PR

No earthquake was likely felt in Camuy in the 24 hours to 8:38 pm AST (00:38 UTC). The last one was M 3.4, 39 km (25 mi) NNW, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Camuy

This page: a magnitude 2.5 earthquake was recorded 8 km (5 mi) north-northwest of Camuy, PR, at 3:19 am AST on 2 January 2021 (07:19 UTC), 78 km deep.

USGS: 7 km NNW of Camuy, Puerto Rico

88 km (55 mi) W of San Juan, PR · 19 km (12 mi) WNW of Arecibo, PR

3:19 am AST, Jan 2, 2021 · · 78 km deep · released about 180 lb of TNT

Every earthquake near Camuy Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Quebradillas Municipio 10 kmCamuy Municipio 11 kmHatillo Municipio 15 kmIsabela Municipio 16 kmArecibo Municipio 25 kmSan Sebastián Municipio 26 kmMoca Municipio 28 kmAguadilla Municipio 29 kmLares Municipio 30 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
3:19 am AST on 2 January 2021 ()
Where
8 km (5 mi) north-northwest of Camuy, PR · earthquakes near Camuy
Magnitude
M 2.5 (md)
Depth
78 km below the surface
Felt
no reports yet
Nearest
Quebradillas Municipio, 10 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2100 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. In Camuy, 8 km away, the estimate is intensity I (not felt). 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, Quebradillas, Carrizales, Piedra Gorda, Cacao, Corcovado.

How big was it?

This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 86,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 61,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.4× the energy of this one
  4. This earthquake M 2.5 about 180 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 45 km N of San Antonio, Puerto Rico · 47 km NNW of this epicentre
  2. 7.1 24 km NNW of San Antonio, Puerto Rico · 37 km WNW of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 37 km WSW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 37 km W of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 33 km WNW 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 18.5465, -66.8823. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Quebradillas Municipio, PR 10 km (6 mi) SSW earthquakes near Quebradillas Municipio
Camuy Municipio, PR 11 km (7 mi) S earthquakes near Camuy Municipio
Hatillo Municipio, PR 15 km (9 mi) SE earthquakes near Hatillo Municipio
Isabela Municipio, PR 16 km (10 mi) WSW earthquakes near Isabela Municipio
Arecibo Municipio, PR 25 km (16 mi) ESE earthquakes near Arecibo Municipio
San Sebastián Municipio, PR 26 km (16 mi) SSW earthquakes near San Sebastián Municipio

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

Aftershocks so far

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

  1. 2.1 5 km SW of Adjuntas, Puerto Rico
  2. 3.4 44 km NNW of San Antonio, Puerto Rico
  3. 3.2 35 km NW of San Antonio, Puerto Rico
  4. 2.4 2 km W of Adjuntas, Puerto Rico
  5. 2.8 29 km N of Tierras Nuevas Poniente, Puerto Rico
  6. 3.1 49 km NNE of Isabela, Puerto Rico
  7. 2.9 21 km N of Arecibo, Puerto Rico
  8. 1.8 2 km SE of Las Marías, Puerto Rico
  9. 1.7 7 km ENE of Maricao, Puerto Rico
  10. 1.8 2 km ESE of Maricao, Puerto Rico
  11. 2.5 3 km SSE of San Sebastián, Puerto Rico
  12. 2.0 8 km E of Maricao, Puerto Rico
  13. 2.6 13 km N of Arecibo, Puerto Rico
  14. 1.7 6 km W of Maricao, Puerto Rico
  15. 2.8 Puerto Rico region

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.