QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near Mayagüez, PR

No earthquake was likely felt in Mayagüez in the 24 hours to 10:46 am AST (14:46 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 2.4 earthquake was recorded 45 km (28 mi) west-southwest of Mayagüez, PR, at 9:56 pm AST on 2 April 2018 (01:56 UTC), 14 km deep.

USGS: 34 km W of Pole Ojea, Puerto Rico

94 km (58 mi) W of Ponce, PR · 45 km (28 mi) WSW of Mayagüez, PR

9:56 pm AST, Apr 2, 2018 · · 14 km deep · released about 110 lb of TNT

Every earthquake near Mayagüez Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 35 kmMayagüez Municipio 41 kmHormigueros Municipio 45 kmRincón Municipio 47 kmLajas Municipio 50 kmAñasco Municipio 52 kmSan Germán Municipio 52 kmAguada Municipio 54 kmSabana Grande Municipio 60 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
9:56 pm AST on 2 April 2018 ()
Where
45 km (28 mi) west-southwest of Mayagüez, PR · earthquakes near Mayagüez
Magnitude
M 2.4 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 35 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3144 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 15 km (9 mi) from the epicentre. In Mayagüez, 45 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 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 95,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.5× the energy of this one
  4. This earthquake M 2.4 about 110 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 2 earthquakes of M5 or more within 50 km:

  1. 5.2 19 km SW of Stella, Puerto Rico · 26 km NE of this epicentre
  2. 5.1 21 km SW of Stella, Puerto Rico · 25 km NE 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 17.9961, -67.5116. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cabo Rojo Municipio, PR 35 km (22 mi) E earthquakes near Cabo Rojo Municipio
Mayagüez Municipio, PR 41 km (25 mi) WNW earthquakes near Mayagüez Municipio
Hormigueros Municipio, PR 45 km (28 mi) ENE earthquakes near Hormigueros Municipio
Rincón Municipio, PR 47 km (29 mi) NE earthquakes near Rincón Municipio
Lajas Municipio, PR 50 km (31 mi) E earthquakes near Lajas Municipio
Añasco Municipio, PR 52 km (32 mi) NE earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.3 34 km SW of Pole Ojea, Puerto Rico
  2. 1.7 4 km W of La Parguera, Puerto Rico
  3. 2.8 58 km W of Puerto Real, Puerto Rico
  4. 1.8 12 km WNW of Puerto Real, Puerto Rico
  5. 2.8 25 km SW of Stella, Puerto Rico
  6. 2.7 15 km WNW of Rincón, Puerto Rico
  7. 2.3 2 km N of Puerto Real, Puerto Rico
  8. 2.4 20 km W of Puerto Real, Puerto Rico
  9. 3.1 52 km WSW of Stella, Puerto Rico
  10. 2.7 42 km WSW of Pole Ojea, Puerto Rico
  11. 2.7 48 km WSW of Stella, Puerto Rico
  12. 2.5 18 km W of Rincón, Puerto Rico
  13. 1.9 19 km ESE of Puerto Real, Puerto Rico
  14. 2.1 10 km SSE of Pole Ojea, Puerto Rico
  15. 2.8 8 km SSW of Stella, 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.