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 8:17 pm AST (00:17 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 40 km (25 mi) southwest of Mayagüez, PR, at 11:19 pm AST on 12 August 2019 (03:19 UTC), 160 km deep.

USGS: Puerto Rico region

85 km (53 mi) W of Ponce, PR · 40 km (25 mi) SW of Mayagüez, PR

11:19 pm AST, Aug 12, 2019 · · 160 km deep · released about 120 lb of TNT

Every earthquake near Mayagüez Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 26 kmHormigueros Municipio 38 kmLajas Municipio 41 kmSan Germán Municipio 44 kmRincón Municipio 45 kmAñasco Municipio 47 kmMayagüez Municipio 50 kmAguada Municipio 52 kmSabana Grande Municipio 52 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
11:19 pm AST on 12 August 2019 ()
Where
40 km (25 mi) southwest of Mayagüez, PR · earthquakes near Mayagüez
Magnitude
M 2.4 (md)
Depth
160 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 26 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2566 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 Mayagüez, 40 km away, the estimate is intensity I (not felt). 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: Pole Ojea, Puerto Real, Boquerón.

How big was it?

This earthquake released about 120 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 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 86,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.7× the energy of this one
  4. This earthquake M 2.4 about 120 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.

Where

Epicentre 17.9683, -67.4250. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cabo Rojo Municipio, PR 26 km (16 mi) E earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 38 km (23 mi) ENE earthquakes near Hormigueros Municipio
Lajas Municipio, PR 41 km (25 mi) E earthquakes near Lajas Municipio
San Germán Municipio, PR 44 km (27 mi) ENE earthquakes near San Germán Municipio
Rincón Municipio, PR 45 km (28 mi) NNE earthquakes near Rincón Municipio
Añasco Municipio, PR 47 km (29 mi) NE earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.1 15 km S of La Parguera, Puerto Rico
  2. 2.4 54 km WSW of Stella, Puerto Rico
  3. 2.7 23 km W of Puerto Real, Puerto Rico
  4. 1.8 2 km NNW of La Parguera, Puerto Rico
  5. 2.0 18 km WNW of Puerto Real, Puerto Rico
  6. 2.4 43 km SW of Pole Ojea, Puerto Rico
  7. 4.3 21 km WNW of Puerto Real, Puerto Rico
  8. 2.2 28 km W of Puerto Real, Puerto Rico
  9. 1.6 4 km SSE of Cabo Rojo, Puerto Rico
  10. 2.3 Puerto Rico region
  11. 2.3 29 km W of Puerto Real, Puerto Rico
  12. 1.8 4 km E of Hormigueros, Puerto Rico
  13. 2.2 15 km WSW of Pole Ojea, Puerto Rico
  14. 1.8 16 km SW of Stella, Puerto Rico
  15. 1.5 5 km SW of Sabana Grande, 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

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