QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

16 km SSE of Punta Santiago, Puerto Rico

· 27 km deep · released about 280 lb of TNT

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10 km30 km60 km120 km N Humacao Municipio 16 kmYabucoa Municipio 19 kmNaguabo Municipio 21 kmMaunabo Municipio 23 kmCeiba Municipio 26 kmLas Piedras Municipio 27 kmVieques Municipio 28 kmJuncos Municipio 32 kmPatillas Municipio 33 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 2.6 (md)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Humacao Municipio, 16 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3120 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 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 55,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 39,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.5× the energy of this one
  4. This earthquake M 2.6 about 280 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 18.0291, -65.6800. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Humacao Municipio, PR 16 km (10 mi) SE of here earthquakes near Humacao Municipio
Yabucoa Municipio, PR 19 km (12 mi) E of here earthquakes near Yabucoa Municipio
Naguabo Municipio, PR 21 km (13 mi) SSE of here earthquakes near Naguabo Municipio
Maunabo Municipio, PR 23 km (14 mi) E of here earthquakes near Maunabo Municipio
Ceiba Municipio, PR 26 km (16 mi) SSW of here earthquakes near Ceiba Municipio
Las Piedras Municipio, PR 27 km (17 mi) SE of here earthquakes near Las Piedras Municipio

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

Aftershocks so far

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

  1. 2.1 4 km ESE of Arroyo, Puerto Rico
  2. 1.8 2 km S of Palmas, Puerto Rico
  3. 1.6 4 km SSE of Palmas, Puerto Rico
  4. 2.0 4 km S of Palmas, Puerto Rico
  5. 1.5 5 km SSW of Lamboglia, Puerto Rico
  6. 1.9 1 km NNE of Buena Vista, Puerto Rico
  7. 2.0 0 km S of Palmas, Puerto Rico
  8. 1.7 5 km SSW of Lamboglia, Puerto Rico
  9. 2.3 5 km SSW of Lamboglia, Puerto Rico
  10. 2.0 1 km NNE of Buena Vista, Puerto Rico
  11. 2.3 5 km SSW of Lamboglia, Puerto Rico
  12. 2.1 5 km SSW of Lamboglia, Puerto Rico
  13. 2.2 6 km SSW of Lamboglia, Puerto Rico
  14. 2.5 5 km S of Palmas, Puerto Rico
  15. 2.0 2 km N of Yaurel, 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 4.6 on 2016-12-05 — it released about 870 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.