QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Isabela, PR

No earthquake was likely felt in Isabela in the 24 hours to 2:51 am AST (06:51 UTC). The last one was M 3.4, 31 km (19 mi) N, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Isabela

This page: a magnitude 2.3 earthquake was recorded 13 km (8 mi) north of Isabela, PR, at 3:59 am AST on 5 June 2017 (07:59 UTC), 12 km deep.

USGS: 12 km N of Isabela, Puerto Rico

34 km (21 mi) WNW of Arecibo, PR · 102 km (64 mi) WNW of San Juan, PR

3:59 am AST, Jun 5, 2017 · · 12 km deep · released about 91 lb of TNT

Every earthquake near Isabela Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Isabela Municipio 14 kmQuebradillas Municipio 18 kmAguadilla Municipio 20 kmCamuy Municipio 24 kmMoca Municipio 27 kmHatillo Municipio 29 kmSan Sebastián Municipio 32 kmAguada Municipio 32 kmAñasco Municipio 38 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
3:59 am AST on 5 June 2017 ()
Where
13 km (8 mi) north of Isabela, PR · earthquakes near Isabela
Magnitude
M 2.3 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Isabela Municipio, 14 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3444 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 16 km (10 mi) from the epicentre. In Isabela, 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.

Likely felt in: Isabela 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 91 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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 14 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 45 km N of San Antonio, Puerto Rico · 35 km NNW of this epicentre
  2. 7.1 24 km NNW of San Antonio, Puerto Rico · 21 km WNW of this epicentre
  3. 6.4 32 km NW of Aguadilla, Puerto Rico · 40 km W of this epicentre
  4. 6.3 6 km WNW of Aguadilla, Puerto Rico · 29 km SW of this epicentre
  5. 6.1 15 km WNW of San Antonio, Puerto Rico · 24 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 18.6128, -67.0091. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Isabela Municipio, PR 14 km (9 mi) S earthquakes near Isabela Municipio
Quebradillas Municipio, PR 18 km (11 mi) SSE earthquakes near Quebradillas Municipio
Aguadilla Municipio, PR 20 km (13 mi) SW earthquakes near Aguadilla Municipio
Camuy Municipio, PR 24 km (15 mi) SE earthquakes near Camuy Municipio
Moca Municipio, PR 27 km (17 mi) SSW earthquakes near Moca Municipio
Hatillo Municipio, PR 29 km (18 mi) SE earthquakes near Hatillo Municipio

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

Aftershocks so far

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

  1. 3.2 2 km S of La Playa, Puerto Rico
  2. 2.4 3 km NE of Mayagüez, Puerto Rico
  3. 2.3 41 km NNW of San Antonio, Puerto Rico
  4. 3.1 48 km NNW of San Antonio, Puerto Rico
  5. 2.1 0 km SSW of Cayuco, Puerto Rico
  6. 3.0 12 km NNE of Isabela, Puerto Rico
  7. 2.8 17 km N of Carrizales, Puerto Rico
  8. 2.3 10 km S of Lares, Puerto Rico
  9. 2.8 45 km N of Hatillo, Puerto Rico
  10. 2.7 15 km NNE of Hatillo, Puerto Rico
  11. 2.9 5 km SW of Las Marías, Puerto Rico
  12. 3.0 10 km NNW of Camuy, Puerto Rico
  13. 2.2 2 km SW of San Sebastián, Puerto Rico
  14. 2.4 41 km NNW of San Antonio, Puerto Rico
  15. 2.8 40 km NNW of San Antonio, 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.