QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Mona Passage

· 14 km deep · released about 800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Rincón Municipio 23 kmAñasco Municipio 30 kmHormigueros Municipio 31 kmAguada Municipio 31 kmCabo Rojo Municipio 32 kmSan Germán Municipio 39 kmMoca Municipio 40 kmAguadilla Municipio 42 kmLajas Municipio 45 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
14 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Rincón Municipio, 23 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1030 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 800 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 6.7 420,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 800 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 18.1895, -67.3998. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 23 km (14 mi) SW of here earthquakes near Rincón Municipio
Añasco Municipio, PR 30 km (19 mi) WSW of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 31 km (19 mi) WNW of here earthquakes near Hormigueros Municipio
Aguada Municipio, PR 31 km (19 mi) SW of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 32 km (20 mi) NW of here earthquakes near Cabo Rojo Municipio
San Germán Municipio, PR 39 km (24 mi) WNW of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.6 4 km SW of La Parguera, Puerto Rico
  2. 2.8 31 km NW of Aguadilla, Puerto Rico
  3. 2.6 8 km WNW of Puerto Real, Puerto Rico
  4. 2.0 5 km NE of La Parguera, Puerto Rico
  5. 2.4 3 km SW of La Parguera, Puerto Rico
  6. 2.2 4 km SW of Maricao, Puerto Rico
  7. 2.9 19 km SW of Stella, Puerto Rico
  8. 2.5 7 km ENE of Mayagüez, Puerto Rico
  9. 2.4 6 km WSW of Maricao, Puerto Rico
  10. 2.5 2 km WNW of Palmarejo, Puerto Rico
  11. 2.4 12 km SSW of Stella, Puerto Rico
  12. 3.2 2 km SSW of Stella, Puerto Rico
  13. 2.4 2 km E 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.9 on 2020-07-03 — it released about 840 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.