QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6md

121 km NNE of Suárez, Puerto Rico

· 61 km deep · released about 4.1 tons of TNT

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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
61 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 122 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 138 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 4.1 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 42,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,300× the energy of this one
  4. This earthquake M 3.6 about 4.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 8.5× 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 19.5000, -65.6103. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 122 km (76 mi) NNE of here earthquakes near Loíza Municipio
San Juan Municipio, PR 129 km (80 mi) NNE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 130 km (81 mi) NNE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 131 km (82 mi) NNE of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 133 km (83 mi) NNE of here earthquakes near Dorado Municipio
Vega Alta Municipio, PR 141 km (87 mi) NNE of here earthquakes near Vega Alta Municipio

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

Aftershocks so far

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

  1. 3.8 113 km N of Culebra, Puerto Rico
  2. 3.4 120 km NNE of Vieques, Puerto Rico
  3. 3.4 110 km N of Suárez, Puerto Rico
  4. 3.4 97 km N of Culebra, Puerto Rico
  5. 3.1 84 km NNE of Vieques, Puerto Rico
  6. 3.3 109 km N of Suárez, Puerto Rico
  7. 3.4 110 km N of Suárez, Puerto Rico
  8. 3.3 113 km NNE of San Juan, Puerto Rico
  9. 3.4 121 km NNE of San Juan, Puerto Rico
  10. 3.4 108 km NNE of San Juan, Puerto Rico
  11. 3.8 113 km N of San Juan, Puerto Rico
  12. 3.5 100 km N of Culebra, Puerto Rico
  13. 3.3 101 km N of Culebra, Puerto Rico
  14. 3.4 107 km N of Culebra, Puerto Rico
  15. 3.2 103 km N of Culebra, 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 4.7 on 2024-11-09 — it released about 39 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.