QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Mona Passage

Yes. A magnitude 3.0 earthquake was recorded in Mona Passage, 23 km (15 mi) W of Mayagüez, PR, at 3:08 pm AST on 13 February 2023 (19:08 UTC), 6.2 km deep.

23 km (15 mi) W of Mayagüez, PR · 139 km (87 mi) W of San Juan, PR

· 6.2 km deep · released about 1,100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 22 kmHormigueros Municipio 26 kmCabo Rojo Municipio 27 kmAñasco Municipio 28 kmAguada Municipio 30 kmSan Germán Municipio 35 kmMoca Municipio 38 kmLajas Municipio 40 kmLas Marías Municipio 41 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 3.0 (md)
Depth
6.2 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 22 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1367 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 39 km (24 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: Puerto Real 21 km, intensity II · Rincón 22 km, intensity II · Mayagüez 24 km, intensity II · Pole Ojea 29 km, intensity II · Aguada 30 km, intensity II · San Germán 35 km, intensity II · Aguadilla 36 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 300,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,400× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 5.3 on 2020-07-03 — about 2,400 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 18.1692, -67.3615. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 22 km (14 mi) NNE earthquakes near Rincón Municipio
Hormigueros Municipio, PR 26 km (16 mi) E earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 27 km (17 mi) SE earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 28 km (17 mi) ENE earthquakes near Añasco Municipio
Aguada Municipio, PR 30 km (18 mi) NE earthquakes near Aguada Municipio
San Germán Municipio, PR 35 km (22 mi) E earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.6 Puerto Rico region
  2. 2.5 Puerto Rico region
  3. 2.6 7 km E of La Parguera, Puerto Rico
  4. 1.5 Puerto Rico region
  5. 2.5 3 km SE of La Parguera, Puerto Rico
  6. 2.3 3 km ENE of La Parguera, Puerto Rico
  7. 2.6 4 km ESE of Lajas, Puerto Rico
  8. 2.2 2 km NE of La Parguera, Puerto Rico
  9. 3.0 17 km SW of Stella, Puerto Rico
  10. 2.2 5 km ENE of La Parguera, Puerto Rico
  11. 2.2 4 km E of Hormigueros, Puerto Rico
  12. 2.3 4 km WSW of Guánica, Puerto Rico
  13. 2.9 0 km NW of Stella, Puerto Rico
  14. 2.0 4 km SW of Liborio Negron Torres, Puerto Rico
  15. 2.4 8 km SE of La Parguera, 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.