QuakeIndex

Earthquake · reviewed by a seismologist

M 3.9md

84 km NE of Punta Cana, Dominican Republic

· 17 km deep · released about 10 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguadilla Municipio 98 kmRincón Municipio 103 kmAguada Municipio 104 kmIsabela Municipio 108 kmMoca Municipio 111 kmMayagüez Municipio 113 kmAñasco Municipio 115 kmQuebradillas Municipio 117 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 3.9 (md)
Depth
17 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Aguadilla Municipio, 98 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 886 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 10 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.9 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 16,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 730× the energy of this one
  3. Magna, Utah 2020 M 5.7 520× the energy of this one
  4. This earthquake M 3.9 about 10 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 22× 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 19.1005, -67.8100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 98 km (61 mi) NW of here earthquakes near Aguadilla Municipio
Rincón Municipio, PR 103 km (64 mi) NW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 104 km (65 mi) NW of here earthquakes near Aguada Municipio
Isabela Municipio, PR 108 km (67 mi) NW of here earthquakes near Isabela Municipio
Moca Municipio, PR 111 km (69 mi) NW of here earthquakes near Moca Municipio
Mayagüez Municipio, PR 113 km (70 mi) N of here earthquakes near Mayagüez Municipio

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

Aftershocks so far

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

  1. 3.2 80 km NW of San Antonio, Puerto Rico
  2. 3.3 72 km NW of Rincón, Puerto Rico
  3. 3.1 77 km NW of San Antonio, Puerto Rico
  4. 3.5 56 km NNE of Punta Cana, Dominican Republic
  5. 3.2 97 km NNW of San Antonio, Puerto Rico
  6. 3.7 107 km NNW of San Antonio, Puerto Rico
  7. 3.9 93 km NNW of San Antonio, Puerto Rico
  8. 3.3 101 km NNW of San Antonio, Puerto Rico
  9. 3.2 90 km NNW of San Antonio, Puerto Rico
  10. 3.4 100 km NNW of San Antonio, Puerto Rico
  11. 5.6 92 km NNW of San Antonio, Puerto Rico
  12. 3.4 62 km NW of San Antonio, Puerto Rico
  13. 3.3 74 km NW of San Antonio, Puerto Rico
  14. 3.4 84 km NNW of San Antonio, Puerto Rico
  15. 3.2 63 km NNE 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 4.7 on 2018-12-07 — it released about 15 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.