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 11:11 am AST (15:11 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 46 km (28 mi) west-northwest of Mayagüez, PR, at 3:00 am AST on 6 July 2017 (07:00 UTC), 18 km deep.

USGS: 33 km W of Stella, Puerto Rico

46 km (28 mi) WNW of Mayagüez, PR · 104 km (65 mi) WNW of Ponce, PR

3:00 am AST, Jul 6, 2017 · · 18 km deep · released about 79 lb of TNT

Every earthquake near Mayagüez Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 34 kmMayagüez Municipio 40 kmAguada Municipio 41 kmAñasco Municipio 46 kmAguadilla Municipio 50 kmHormigueros Municipio 50 kmCabo Rojo Municipio 51 kmMoca Municipio 52 kmSan Germán Municipio 59 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
3:00 am AST on 6 July 2017 ()
Where
46 km (28 mi) west-northwest of Mayagüez, PR · earthquakes near Mayagüez
Magnitude
M 2.3 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 34 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3417 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 7 km (4 mi) from the epicentre. In Mayagüez, 46 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 79 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 5.8 190,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 79 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 · 42 km NNE of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 41 km ENE of this epicentre
  3. 6.3 58 km E of Punta Cana, Dominican Republic · 39 km NW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 46 km NE of this epicentre
  5. 5.2 19 km SW of Stella, Puerto Rico · 23 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 18.2821, -67.5650. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 34 km (21 mi) E earthquakes near Rincón Municipio
Mayagüez Municipio, PR 40 km (25 mi) WSW earthquakes near Mayagüez Municipio
Aguada Municipio, PR 41 km (26 mi) ENE earthquakes near Aguada Municipio
Añasco Municipio, PR 46 km (28 mi) E earthquakes near Añasco Municipio
Aguadilla Municipio, PR 50 km (31 mi) ENE earthquakes near Aguadilla Municipio
Hormigueros Municipio, PR 50 km (31 mi) ESE earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.9 53 km WSW of Pole Ojea, Puerto Rico
  2. 2.0 3 km WNW of Puerto Real, Puerto Rico
  3. 3.3 70 km WSW of Stella, Puerto Rico
  4. 3.2 65 km W of Stella, Puerto Rico
  5. 2.7 44 km WSW of Stella, Puerto Rico
  6. 3.4 35 km W of Rincón, Puerto Rico
  7. 2.5 17 km NW of Rincón, Puerto Rico
  8. 1.8 5 km SW of Mayagüez, Puerto Rico
  9. 3.0 28 km NNW of Rincón, Puerto Rico
  10. 2.4 59 km WSW of Stella, Puerto Rico
  11. 1.9 23 km SW of Stella, Puerto Rico
  12. 2.4 6 km SW of La Playa, Puerto Rico
  13. 3.2 2 km S of La Playa, Puerto Rico
  14. 1.8 3 km SSE of Mayagüez, Puerto Rico
  15. 2.4 3 km NE of Mayagüez, 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.