QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Mona Passage

Yes. A magnitude 2.4 earthquake was recorded in Mona Passage, 15 km (9 mi) SE of Mayagüez, PR, at 10:49 am AST on 3 June 2023 (14:49 UTC), 19 km deep.

15 km (9 mi) SE of Mayagüez, PR · 107 km (66 mi) WSW of San Juan, PR

· 19 km deep · released about 130 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Germán Municipio 1 kmSabana Grande Municipio 9 kmHormigueros Municipio 10 kmMaricao Municipio 12 kmLas Marías Municipio 13 kmLajas Municipio 15 kmYauco Municipio 18 kmCabo Rojo Municipio 21 kmGuánica Municipio 22 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
19 km below the surface
Felt
no reports yet
Nearest
San Germán Municipio, 1 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1257 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 10 km (6 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.

Likely felt in: San Germán 4 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 130 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 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 80,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.2× the energy of this one
  4. This earthquake M 2.4 about 130 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 6.4 on 2020-01-07 — about 900,000 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 18.1172, -67.0273. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Germán Municipio, PR 1 km (1 mi) SW earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 9 km (6 mi) ESE earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 10 km (6 mi) WNW earthquakes near Hormigueros Municipio
Maricao Municipio, PR 12 km (7 mi) ENE earthquakes near Maricao Municipio
Las Marías Municipio, PR 13 km (8 mi) NNE earthquakes near Las Marías Municipio
Lajas Municipio, PR 15 km (10 mi) S earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 2.4 5 km SSE of Maricao, Puerto Rico
  2. 2.4 5 km NNE of Sabana Grande, Puerto Rico
  3. 3.0 Puerto Rico region
  4. 3.6 3 km NNE of Sabana Grande, Puerto Rico
  5. 2.2 6 km WSW of Guánica, Puerto Rico
  6. 2.3 3 km W of Tallaboa, Puerto Rico
  7. 1.9 3 km WSW of Guánica, Puerto Rico
  8. 2.4 12 km SSE of Maria Antonia, Puerto Rico
  9. 2.3 4 km SW of Indios, Puerto Rico
  10. 2.5 4 km ESE of La Parguera, Puerto Rico
  11. 2.5 6 km WSW of Guánica, Puerto Rico
  12. 2.5 3 km SW of Guánica, Puerto Rico
  13. 2.5 0 km WSW of La Parguera, Puerto Rico
  14. 2.2 4 km E of La Parguera, Puerto Rico
  15. 2.0 4 km ESE of Indios, 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.