QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Camuy, PR

No earthquake was likely felt in Camuy in the 24 hours to 6:04 pm AST (22:04 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 2.9 earthquake was recorded 25 km (15 mi) north of Camuy, PR, at 4:49 am AST on 7 December 2018 (08:49 UTC), 63 km deep.

USGS: 24 km N of Camuy, Puerto Rico

91 km (57 mi) WNW of San Juan, PR · 31 km (19 mi) NNW of Arecibo, PR

4:49 am AST, Dec 7, 2018 · · 63 km deep · released about 570 lb of TNT

Every earthquake near Camuy Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Quebradillas Municipio 27 kmCamuy Municipio 29 kmIsabela Municipio 29 kmHatillo Municipio 30 kmArecibo Municipio 37 kmAguadilla Municipio 38 kmBarceloneta Municipio 42 kmMoca Municipio 43 kmSan Sebastián Municipio 43 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
4:49 am AST on 7 December 2018 ()
Where
25 km (15 mi) north of Camuy, PR · earthquakes near Camuy
Magnitude
M 2.9 (md)
Depth
63 km below the surface
Felt
no reports yet
Nearest
Quebradillas Municipio, 27 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2896 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, 25 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, Carrizales, Quebradillas, Isabela, Corcovado.

How big was it?

This earthquake released about 570 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 27,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.9 about 570 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 4.7 on 2017-07-17 — about 520 times the energy of this one.

Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 45 km N of San Antonio, Puerto Rico · 34 km NW of this epicentre
  2. 7.1 24 km NNW of San Antonio, Puerto Rico · 34 km W of this epicentre
  3. 6.4 61 km N of Hatillo, Puerto Rico · 38 km N of this epicentre
  4. 6.3 6 km WNW of Aguadilla, Puerto Rico · 47 km SW of this epicentre
  5. 6.1 15 km WNW of San Antonio, Puerto Rico · 42 km WSW 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 18.7061, -66.8696. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Quebradillas Municipio, PR 27 km (17 mi) SSW earthquakes near Quebradillas Municipio
Camuy Municipio, PR 29 km (18 mi) S earthquakes near Camuy Municipio
Isabela Municipio, PR 29 km (18 mi) SSW earthquakes near Isabela Municipio
Hatillo Municipio, PR 30 km (19 mi) SSE earthquakes near Hatillo Municipio
Arecibo Municipio, PR 37 km (23 mi) SE earthquakes near Arecibo Municipio
Aguadilla Municipio, PR 38 km (24 mi) SW earthquakes near Aguadilla Municipio

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

Aftershocks so far

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

  1. 2.9 59 km N of Hatillo, Puerto Rico
  2. 2.8 66 km N of Hatillo, Puerto Rico
  3. 2.8 0 km NE of La Luisa, Puerto Rico
  4. 2.5 19 km NNW of Garrochales, Puerto Rico
  5. 2.7 14 km NNW of Sabana, Puerto Rico
  6. 2.7 17 km N of Tierras Nuevas Poniente, Puerto Rico
  7. 2.4 26 km N of San Antonio, Puerto Rico
  8. 2.8 21 km NW of San Antonio, Puerto Rico
  9. 2.5 37 km NNW of San Antonio, Puerto Rico
  10. 2.4 16 km N of Isabela, Puerto Rico
  11. 1.6 3 km NNW of Isabela, Puerto Rico
  12. 2.5 46 km NNW of San Antonio, Puerto Rico
  13. 2.4 2 km NNE of Tierras Nuevas Poniente, Puerto Rico
  14. 3.1 49 km NNW of San Antonio, Puerto Rico
  15. 2.1 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.