QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

3 km NW of Fuig, Puerto Rico

· 7.0 km deep · released about 14 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 7 kmSabana Grande Municipio 9 kmLajas Municipio 11 kmYauco Municipio 12 kmSan Germán Municipio 15 kmGuayanilla Municipio 15 kmMaricao Municipio 19 kmPeñuelas Municipio 23 kmHormigueros Municipio 23 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 1.8 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 7 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3234 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 18.0071, -66.9413. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 7 km (4 mi) NNW of here earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 9 km (5 mi) S of here earthquakes near Sabana Grande Municipio
Lajas Municipio, PR 11 km (7 mi) ENE of here earthquakes near Lajas Municipio
Yauco Municipio, PR 12 km (8 mi) SW of here earthquakes near Yauco Municipio
San Germán Municipio, PR 15 km (9 mi) SE of here earthquakes near San Germán Municipio
Guayanilla Municipio, PR 15 km (9 mi) W of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 2.0 7 km WSW of Puerto Real, Puerto Rico
  2. 1.7 13 km S of Indios, Puerto Rico
  3. 2.7 7 km W of Mayagüez, Puerto Rico
  4. 2.5 0 km NNE of Mayagüez, Puerto Rico
  5. 2.0 5 km SE of Ponce, Puerto Rico
  6. 2.2 6 km ENE of La Parguera, Puerto Rico
  7. 2.2 19 km SSE of Tallaboa, Puerto Rico
  8. 1.8 2 km ESE of Sabana Grande, Puerto Rico
  9. 2.6 24 km SSE of Pole Ojea, Puerto Rico
  10. 2.1 Mona Passage
  11. 1.8 4 km NE of La Parguera, Puerto Rico
  12. 2.3 2 km NNW of Potala Pastillo, Puerto Rico
  13. 2.0 9 km WSW of Mayagüez, Puerto Rico
  14. 2.1 10 km W of Puerto Real, Puerto Rico
  15. 1.9 4 km ENE of La Parguera, 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

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