QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Mayagüez, PR

No earthquake was likely felt in Mayagüez in the 24 hours to 3:27 pm AST (19:27 UTC). The last one was M 2.9, 25 km (15 mi) SSE, at 3:17 am AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Mayagüez

This page: a magnitude 2.3 earthquake was recorded 42 km (26 mi) west of Mayagüez, PR, at 5:09 pm AST on 27 June 2017 (21:09 UTC), 10 km deep.

USGS: 31 km WSW of Stella, Puerto Rico

99 km (62 mi) WNW of Ponce, PR · 41 km (26 mi) W of Mayagüez, PR

5:09 pm AST, Jun 27, 2017 · · 10 km deep · released about 98 lb of TNT

Every earthquake near Mayagüez Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 32 kmAguada Municipio 40 kmMayagüez Municipio 41 kmAñasco Municipio 43 kmHormigueros Municipio 45 kmCabo Rojo Municipio 45 kmAguadilla Municipio 50 kmMoca Municipio 51 kmSan Germán Municipio 54 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
5:09 pm AST on 27 June 2017 ()
Where
42 km (26 mi) west of Mayagüez, PR · earthquakes near Mayagüez
Magnitude
M 2.3 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 32 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3422 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 18 km (11 mi) from the epicentre. In Mayagüez, 42 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.

How big was it?

This earthquake released about 98 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 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 32 km NW of Aguadilla, Puerto Rico · 46 km NNE of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 41 km NE of this epicentre
  3. 6.3 58 km E of Punta Cana, Dominican Republic · 46 km NW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 48 km NE of this epicentre
  5. 5.2 19 km SW of Stella, Puerto Rico · 18 km ESE 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 18.2288, -67.5321. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 32 km (20 mi) ENE earthquakes near Rincón Municipio
Aguada Municipio, PR 40 km (25 mi) ENE earthquakes near Aguada Municipio
Mayagüez Municipio, PR 41 km (25 mi) WSW earthquakes near Mayagüez Municipio
Añasco Municipio, PR 43 km (27 mi) E earthquakes near Añasco Municipio
Hormigueros Municipio, PR 45 km (28 mi) ESE earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 45 km (28 mi) SE earthquakes near Cabo Rojo Municipio

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

Aftershocks so far

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

  1. 2.4 59 km WSW of Stella, Puerto Rico
  2. 2.1 4 km E of Espino, Puerto Rico
  3. 1.9 23 km SW of Stella, Puerto Rico
  4. 2.4 6 km SW of La Playa, Puerto Rico
  5. 3.2 2 km S of La Playa, Puerto Rico
  6. 1.8 3 km SSE of Mayagüez, Puerto Rico
  7. 2.4 3 km NE of Mayagüez, Puerto Rico
  8. 2.8 35 km WNW of Rincón, Puerto Rico
  9. 2.1 32 km WNW of Rincón, Puerto Rico
  10. 2.2 3 km SSE of Boquerón, Puerto Rico
  11. 2.8 46 km NW of Rincón, Puerto Rico
  12. 3.1 66 km WSW of Stella, Puerto Rico
  13. 2.6 10 km NW of Puerto Real, Puerto Rico
  14. 2.3 2 km NE of Hormigueros, Puerto Rico
  15. 1.7 1 km SW of Cabo Rojo, 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.