QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6md

Mona Passage

· 79 km deep · released about 3.8 tons of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 27 kmRincón Municipio 92 kmAguada Municipio 100 kmCabo Rojo Municipio 101 kmAñasco Municipio 104 kmHormigueros Municipio 106 kmAguadilla Municipio 107 kmMoca Municipio 111 kmSan Germán Municipio 114 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 3.6 (md)
Depth
79 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Mayagüez Municipio, 27 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1198 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 3.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 45,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,400× the energy of this one
  4. This earthquake M 3.6 about 3.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 7.9× more

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 18.1993, -68.1135. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 27 km (17 mi) WNW of here earthquakes near Mayagüez Municipio
Rincón Municipio, PR 92 km (57 mi) W of here earthquakes near Rincón Municipio
Aguada Municipio, PR 100 km (62 mi) W of here earthquakes near Aguada Municipio
Cabo Rojo Municipio, PR 101 km (63 mi) WNW of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 104 km (65 mi) W of here earthquakes near Añasco Municipio
Hormigueros Municipio, PR 106 km (66 mi) W of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 3.7 26 km SSE of Boca de Yuma, Dominican Republic
  2. 3.4 56 km SE of Boca de Yuma, Dominican Republic
  3. 3.8 Mona Passage
  4. 3.8 56 km SE of Punta Cana, Dominican Republic
  5. 3.6 44 km S of Boca de Yuma, Dominican Republic
  6. 3.1 45 km SSE of Boca de Yuma, Dominican Republic
  7. 3.8 53 km SE of Punta Cana, Dominican Republic
  8. 3.7 54 km SE of Boca de Yuma, Dominican Republic
  9. 3.7 22 km SSE of Boca de Yuma, Dominican Republic
  10. 3.4 57 km SE of Boca de Yuma, Dominican Republic
  11. 3.7 36 km SSE of Boca de Yuma, Dominican Republic
  12. 3.8 29 km ESE of Boca de Yuma, Dominican Republic
  13. 3.4 54 km SE of Punta Cana, Dominican Republic
  14. 3.9 44 km ESE of Punta Cana, Dominican Republic
  15. 3.5 22 km SSE 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.3 on 2019-02-04 — it released about 350 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.