QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Mona Passage

Yes. A magnitude 2.8 earthquake was recorded in Mona Passage, 47 km (29 mi) NW of Mayagüez, PR, at 3:06 am AST on 13 November 2023 (07:06 UTC), 15 km deep.

47 km (29 mi) NW of Mayagüez, PR · 147 km (91 mi) W of San Juan, PR

· 15 km deep · released about 490 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 28 kmAguada Municipio 31 kmAguadilla Municipio 33 kmAñasco Municipio 41 kmMoca Municipio 42 kmIsabela Municipio 46 kmHormigueros Municipio 54 kmSan Sebastián Municipio 54 kmQuebradillas Municipio 55 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 2.8 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 28 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1094 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 23 km (14 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: Rincón, Stella.

How big was it?

This earthquake released about 490 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 31,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 490 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 240 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 18.5013, -67.4515. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Rincón Municipio, PR 28 km (17 mi) SE earthquakes near Rincón Municipio
Aguada Municipio, PR 31 km (19 mi) ESE earthquakes near Aguada Municipio
Aguadilla Municipio, PR 33 km (20 mi) E earthquakes near Aguadilla Municipio
Añasco Municipio, PR 41 km (26 mi) SE earthquakes near Añasco Municipio
Moca Municipio, PR 42 km (26 mi) ESE earthquakes near Moca Municipio
Isabela Municipio, PR 46 km (29 mi) E earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 3.5 52 km NNW of San Antonio, Puerto Rico
  2. 3.0 38 km NW of San Antonio, Puerto Rico
  3. 3.3 42 km NW of San Antonio, Puerto Rico
  4. 3.5 20 km W of Puerto Real, Puerto Rico
  5. 3.2 44 km NW of San Antonio, Puerto Rico
  6. 3.3 67 km NW of San Antonio, Puerto Rico
  7. 3.0 27 km WNW of San Antonio, Puerto Rico
  8. 3.3 25 km W of Puerto Real, Puerto Rico
  9. 3.6 17 km NW of Rincón, Puerto Rico
  10. 3.1 8 km WSW of Mayagüez, Puerto Rico
  11. 3.1 54 km NNW of San Antonio, Puerto Rico
  12. 3.2 58 km NW of San Antonio, Puerto Rico
  13. 3.1 30 km NW of Aguadilla, Puerto Rico
  14. 3.1 32 km NW of Aguadilla, Puerto Rico
  15. 3.1 37 km NNW of San Antonio, 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.