QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Mona Passage

Yes. A magnitude 2.4 earthquake was recorded in Mona Passage, 55 km (34 mi) W of Mayagüez, PR, at 11:40 pm AST on 24 October 2019 (03:40 UTC), 53 km deep.

55 km (34 mi) W of Mayagüez, PR · 112 km (70 mi) WNW of Ponce, PR

· 53 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mayagüez Municipio 28 kmRincón Municipio 46 kmAguada Municipio 54 kmCabo Rojo Municipio 56 kmAñasco Municipio 57 kmHormigueros Municipio 59 kmAguadilla Municipio 62 kmMoca Municipio 64 kmSan Germán Municipio 67 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 2.4 (md)
Depth
53 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 28 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2574 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. 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 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 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 92,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.2× 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2017-10-01 — about 1,000 times the energy of this one.

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 18.2150, -67.6635. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mayagüez Municipio, PR 28 km (17 mi) WSW earthquakes near Mayagüez Municipio
Rincón Municipio, PR 46 km (28 mi) ENE earthquakes near Rincón Municipio
Aguada Municipio, PR 54 km (33 mi) ENE earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 56 km (35 mi) ESE earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 57 km (35 mi) E earthquakes near Añasco Municipio
Hormigueros Municipio, PR 59 km (36 mi) E earthquakes near Hormigueros 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 11 km WNW of Pole Ojea, Puerto Rico
  2. 2.7 7 km SSW of Stella, Puerto Rico
  3. 2.3 12 km NW of Puerto Real, Puerto Rico
  4. 1.8 12 km SW of Stella, Puerto Rico
  5. 2.4 18 km W of Rincón, Puerto Rico
  6. 2.8 Mona Passage
  7. 2.8 53 km SE of Punta Cana, Dominican Republic
  8. 3.0 33 km WSW of Stella, Puerto Rico
  9. 2.5 23 km W of Pole Ojea, Puerto Rico
  10. 2.1 10 km W of Rincón, Puerto Rico
  11. 2.1 7 km SW of La Playa, Puerto Rico
  12. 3.0 46 km WSW of Stella, Puerto Rico
  13. 2.6 18 km W of Rincón, Puerto Rico
  14. 2.9 57 km SE of Punta Cana, Dominican Republic
  15. 3.0 59 km ESE of Punta Cana, Dominican Republic

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.