QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6md

111 km N of Suárez, Puerto Rico

· 43 km deep · released about 3.8 tons of TNT

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10 km30 km60 km120 km N Loíza Municipio 111 kmCataño Municipio 115 kmSan Juan Municipio 116 kmToa Baja Municipio 116 kmCarolina Municipio 116 kmDorado Municipio 117 kmRío Grande Municipio 118 kmFajardo Municipio 119 kmLuquillo Municipio 119 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
43 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 111 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1376 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 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 19.4330, -65.8145. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 111 km (69 mi) N of here earthquakes near Loíza Municipio
Cataño Municipio, PR 115 km (72 mi) NNE of here earthquakes near Cataño Municipio
San Juan Municipio, PR 116 km (72 mi) NNE of here earthquakes near San Juan Municipio
Toa Baja Municipio, PR 116 km (72 mi) NNE of here earthquakes near Toa Baja Municipio
Carolina Municipio, PR 116 km (72 mi) N of here earthquakes near Carolina Municipio
Dorado Municipio, PR 117 km (72 mi) NNE of here earthquakes near Dorado Municipio

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

Aftershocks so far

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

  1. 3.7 113 km N of Suárez, Puerto Rico
  2. 3.4 Puerto Rico region
  3. 3.2 78 km N of San Juan, Puerto Rico
  4. 2.9 87 km N of Brenas, Puerto Rico
  5. 3.9 138 km N of Suárez, Puerto Rico
  6. 3.5 67 km N of San Juan, Puerto Rico
  7. 3.3 82 km NNE of Suárez, Puerto Rico
  8. 3.1 68 km NNE of Suárez, Puerto Rico
  9. 3.3 86 km NNE of Suárez, Puerto Rico
  10. 3.3 82 km N of San Juan, Puerto Rico
  11. 3.6 137 km NNE of Vieques, Puerto Rico
  12. 3.4 120 km NNE of Vieques, Puerto Rico
  13. 3.9 134 km NNE of Vieques, Puerto Rico
  14. 4.0 120 km NNE of Vieques, Puerto Rico
  15. 3.9 Puerto Rico region

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 4.1 on 2022-12-09 — it released about 6.5 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.