QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

2 km SSW of Salinas, Puerto Rico

· 4.0 km deep · released about 170 lb of TNT

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10 km30 km60 km120 km N Salinas Municipio 5 kmSanta Isabel Municipio 9 kmCoamo Municipio 17 kmGuayama Municipio 18 kmAibonito Municipio 20 kmJuana Díaz Municipio 20 kmCayey Municipio 23 kmVillalba Municipio 26 kmBarranquitas Municipio 27 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 2.5 (md)
Depth
4.0 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Salinas Municipio, 5 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1513 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 17.9591, -66.3063. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Salinas Municipio, PR 5 km (3 mi) WSW of here earthquakes near Salinas Municipio
Santa Isabel Municipio, PR 9 km (5 mi) E of here earthquakes near Santa Isabel Municipio
Coamo Municipio, PR 17 km (11 mi) SSE of here earthquakes near Coamo Municipio
Guayama Municipio, PR 18 km (11 mi) W of here earthquakes near Guayama Municipio
Aibonito Municipio, PR 20 km (12 mi) SSW of here earthquakes near Aibonito Municipio
Juana Díaz Municipio, PR 20 km (12 mi) ESE of here earthquakes near Juana Díaz Municipio

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

Aftershocks so far

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

  1. 2.6 5 km SW of Tallaboa, Puerto Rico
  2. 2.5 0 km ENE of Magas Arriba, Puerto Rico
  3. 2.3 0 km S of Magas Arriba, Puerto Rico
  4. 2.8 7 km SSE of Tallaboa, Puerto Rico
  5. 1.6 5 km SSW of Tallaboa, Puerto Rico
  6. 2.5 8 km SSE of Tallaboa, Puerto Rico
  7. 2.0 0 km WSW of Magas Arriba, Puerto Rico
  8. 2.5 Puerto Rico region
  9. 2.5 4 km S of Adjuntas, Puerto Rico
  10. 2.5 4 km S of Magas Arriba, Puerto Rico
  11. 2.2 7 km SE of Indios, 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 5.6 on 2020-01-07 — it released about 45,000 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.