QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

103 km S of Guánica, Puerto Rico

· 10 km deep · released about 1.3 tons of TNT

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10 km30 km60 km120 km N Guánica Municipio 101 kmGuayanilla Municipio 106 kmLajas Municipio 106 kmPonce Municipio 108 kmPeñuelas Municipio 109 kmSanta Isabel Municipio 109 kmJuana Díaz Municipio 110 kmCabo Rojo Municipio 113 kmYauco Municipio 115 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 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 101 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2369 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 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× 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 2.8× 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 17.0513, -66.7998. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 101 km (62 mi) S of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 106 km (66 mi) S of here earthquakes near Guayanilla Municipio
Lajas Municipio, PR 106 km (66 mi) SSE of here earthquakes near Lajas Municipio
Ponce Municipio, PR 108 km (67 mi) S of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 109 km (68 mi) S of here earthquakes near Peñuelas Municipio
Santa Isabel Municipio, PR 109 km (68 mi) SSW of here earthquakes near Santa Isabel Municipio

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

Aftershocks so far

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

  1. 2.7 56 km S of Tallaboa, Puerto Rico
  2. 2.9 64 km SSW of Santa Isabel, Puerto Rico
  3. 2.9 69 km SSE of Guánica, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.