QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4Md

Puerto Rico region

· 34 km deep · released about 120 lb of TNT

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10 km30 km60 km120 km N Fajardo Municipio 108 kmCulebra Municipio 108 kmLuquillo Municipio 115 kmRío Grande Municipio 118 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 2.4 (Md)
Depth
34 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 108 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3624 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 lb of TNT

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 19.2975, -65.2368. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 108 km (67 mi) NNE of here earthquakes near Fajardo Municipio
Culebra Municipio, PR 108 km (67 mi) N of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 115 km (71 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 118 km (73 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 120 km (75 mi) NE of here earthquakes near Loíza Municipio
Ceiba Municipio, PR 123 km (76 mi) NNE of here earthquakes near Ceiba 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. 3.3 90 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 2.7 110 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 1.6 91 km NNE of Luquillo, Puerto Rico
  4. 3.4 85 km N of Culebra, Puerto Rico
  5. 3.9 118 km NNE of Vieques, Puerto Rico
  6. 3.4 129 km NNE of Suárez, Puerto Rico
  7. 2.9 105 km NNE of Vieques, Puerto Rico
  8. 2.9 79 km N of Culebra, Puerto Rico
  9. 2.7 94 km NNW of Charlotte Amalie, U.S. Virgin Islands
  10. 3.6 121 km N of Charlotte Amalie, U.S. Virgin Islands
  11. 2.4 126 km NNE of Vieques, Puerto Rico
  12. 3.1 Virgin Islands
  13. 2.0 75 km N of Charlotte Amalie, U.S. Virgin Islands
  14. 3.1 145 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.5 73 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 4.3 on 2016-09-04 — it released about 710 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.