QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5Md

Mona Passage

Yes. A magnitude 2.5 earthquake was recorded in Mona Passage, 15 km (9 mi) WSW of Mayagüez, PR, at 11:24 pm AST on 24 March 2017 (03:24 UTC), 22 km deep.

15 km (9 mi) WSW of Mayagüez, PR · 131 km (81 mi) WSW of San Juan, PR

· 22 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hormigueros Municipio 16 kmCabo Rojo Municipio 19 kmAñasco Municipio 22 kmRincón Municipio 22 kmSan Germán Municipio 25 kmAguada Municipio 27 kmLajas Municipio 30 kmLas Marías Municipio 32 kmMoca Municipio 33 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
Magnitude
M 2.5 (Md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 16 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3519 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 4 km (2 mi) from the epicentre. 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: Puerto Real, Cabo Rojo, Hormigueros, Mayagüez, Boquerón, Monte Grande.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 18.1417, -67.2693. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Hormigueros Municipio, PR 16 km (10 mi) E earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 19 km (12 mi) SSE earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 22 km (14 mi) NE earthquakes near Añasco Municipio
Rincón Municipio, PR 22 km (14 mi) N earthquakes near Rincón Municipio
San Germán Municipio, PR 25 km (15 mi) E earthquakes near San Germán Municipio
Aguada Municipio, PR 27 km (17 mi) NNE earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 1.9 9 km SW of La Parguera, Puerto Rico
  2. 2.3 9 km SW of Guánica, Puerto Rico
  3. 2.5 19 km WNW of Rincón, Puerto Rico
  4. 2.7 19 km SW of Stella, Puerto Rico
  5. 1.6 3 km SW of Mayagüez, Puerto Rico
  6. 2.3 1 km NW of Liborio Negron Torres, Puerto Rico
  7. 1.6 5 km WSW of La Parguera, Puerto Rico
  8. 2.1 1 km ESE of Mayagüez, Puerto Rico
  9. 2.0 4 km NW of Rincón, Puerto Rico
  10. 2.1 17 km WNW of Rincón, Puerto Rico
  11. 2.1 2 km SE of Sabana Eneas, Puerto Rico
  12. 2.9 34 km WSW of Stella, Puerto Rico
  13. 2.8 42 km W of Rincón, Puerto Rico
  14. 1.7 3 km SSE of Boquerón, Puerto Rico
  15. 2.3 45 km WSW 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.