QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

95 km NNE of Suárez, Puerto Rico

· 95 km deep · released about 1.3 tons of TNT

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10 km30 km60 km120 km N Loíza Municipio 97 kmFajardo Municipio 98 kmLuquillo Municipio 100 kmRío Grande Municipio 101 kmCarolina Municipio 103 kmSan Juan Municipio 105 kmCataño Municipio 107 kmCanóvanas Municipio 108 kmToa Baja Municipio 108 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 3.3 (md)
Depth
95 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 97 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1047 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 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,100× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.7× 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 19.2668, -65.6238. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 97 km (60 mi) NNE of here earthquakes near Loíza Municipio
Fajardo Municipio, PR 98 km (61 mi) N of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 100 km (62 mi) N of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 101 km (63 mi) N of here earthquakes near Río Grande Municipio
Carolina Municipio, PR 103 km (64 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 105 km (65 mi) NNE of here earthquakes near San Juan Municipio

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

Aftershocks so far

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

  1. 3.6 90 km NNE of Vieques, Puerto Rico
  2. 3.8 127 km N of Suárez, Puerto Rico
  3. 3.5 75 km NNE of San Juan, Puerto Rico
  4. 3.6 124 km N of Suárez, Puerto Rico
  5. 3.2 69 km NNE of Luquillo, Puerto Rico
  6. 3.6 91 km N of Culebra, Puerto Rico
  7. 3.6 118 km N of Suárez, Puerto Rico
  8. 2.9 68 km NNE of Luquillo, Puerto Rico
  9. 3.9 137 km NNE of Vieques, Puerto Rico
  10. 3.2 55 km N of Loíza, Puerto Rico
  11. 3.4 84 km NNE of Luquillo, Puerto Rico
  12. 3.4 75 km N of San Juan, Puerto Rico
  13. 3.3 78 km N of Suárez, Puerto Rico
  14. 3.2 50 km N of Suárez, Puerto Rico
  15. 3.6 63 km NNE of Vieques, 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 4.5 on 2018-03-06 — it released about 65 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.