QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Camuy, PR

No earthquake was likely felt in Camuy in the 24 hours to 11:42 pm AST (03:42 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 2.1 earthquake was recorded 13 km (8 mi) north-northwest of Camuy, PR, at 12:38 am AST on 17 June 2018 (04:38 UTC), 18 km deep.

USGS: 12 km NNW of Camuy, Puerto Rico

90 km (56 mi) WNW of San Juan, PR · 22 km (14 mi) NW of Arecibo, PR

12:38 am AST, Jun 17, 2018 · · 18 km deep · released about 41 lb of TNT

Every earthquake near Camuy Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Quebradillas Municipio 14 kmCamuy Municipio 16 kmIsabela Municipio 17 kmHatillo Municipio 19 kmArecibo Municipio 29 kmAguadilla Municipio 29 kmSan Sebastián Municipio 30 kmMoca Municipio 30 kmLares 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
12:38 am AST on 17 June 2018 ()
Where
13 km (8 mi) north-northwest of Camuy, PR · earthquakes near Camuy
Magnitude
M 2.1 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Quebradillas Municipio, 14 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3070 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Camuy, 13 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, Quebradillas, Carrizales, Isabela, Piedra Gorda, Cacao.

How big was it?

This earthquake released about 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 45 km N of San Antonio, Puerto Rico · 43 km NNW of this epicentre
  2. 7.1 24 km NNW of San Antonio, Puerto Rico · 33 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 · 36 km W of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 31 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 18.5876, -66.8943. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Quebradillas Municipio, PR 14 km (9 mi) SSW earthquakes near Quebradillas Municipio
Camuy Municipio, PR 16 km (10 mi) SSE earthquakes near Camuy Municipio
Isabela Municipio, PR 17 km (11 mi) SW earthquakes near Isabela Municipio
Hatillo Municipio, PR 19 km (12 mi) SSE earthquakes near Hatillo Municipio
Arecibo Municipio, PR 29 km (18 mi) SE earthquakes near Arecibo Municipio
Aguadilla Municipio, PR 29 km (18 mi) WSW earthquakes near Aguadilla Municipio

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

Aftershocks so far

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

  1. 2.7 6 km E of Espino, Puerto Rico
  2. 2.3 5 km WNW of Las Marías, Puerto Rico
  3. 2.3 5 km E of Espino, Puerto Rico
  4. 2.0 6 km ENE of Espino, Puerto Rico
  5. 2.7 59 km N of Hatillo, Puerto Rico
  6. 2.2 59 km N of Hatillo, Puerto Rico
  7. 2.4 47 km NNE of Isabela, Puerto Rico
  8. 2.7 40 km NNW of San Antonio, Puerto Rico
  9. 2.5 18 km NNE of Carrizales, Puerto Rico
  10. 2.8 41 km N of Carrizales, Puerto Rico
  11. 2.7 2 km W of Rincón, Puerto Rico
  12. 2.1 5 km NW of Adjuntas, Puerto Rico
  13. 1.7 6 km SE of Maricao, Puerto Rico
  14. 2.5 28 km NNW of Isabela, Puerto Rico
  15. 2.1 15 km N of Quebradillas, 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.