QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

4 km N of Suárez, Puerto Rico

· 16 km deep · released about 46 lb of TNT

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10 km30 km60 km120 km N Loíza Municipio 9 kmRío Grande Municipio 12 kmCarolina Municipio 14 kmCanóvanas Municipio 16 kmLuquillo Municipio 19 kmTrujillo Alto Municipio 22 kmSan Juan Municipio 23 kmGurabo Municipio 26 kmJuncos Municipio 28 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 2.1 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 9 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2738 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 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 18.4713, -65.8571. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 9 km (6 mi) ENE of here earthquakes near Loíza Municipio
Río Grande Municipio, PR 12 km (8 mi) NNW of here earthquakes near Río Grande Municipio
Carolina Municipio, PR 14 km (9 mi) NE of here earthquakes near Carolina Municipio
Canóvanas Municipio, PR 16 km (10 mi) N of here earthquakes near Canóvanas Municipio
Luquillo Municipio, PR 19 km (12 mi) NW of here earthquakes near Luquillo Municipio
Trujillo Alto Municipio, PR 22 km (13 mi) NE of here earthquakes near Trujillo Alto Municipio

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

Aftershocks so far

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

  1. 2.8 43 km N of Suárez, Puerto Rico
  2. 2.7 3 km E of Ceiba, Puerto Rico
  3. 2.1 9 km NNW of Levittown, Puerto Rico
  4. 2.5 36 km NNE of Suárez, Puerto Rico
  5. 1.9 20 km NNE of Luquillo, Puerto Rico
  6. 2.1 2 km ENE of Celada, Puerto Rico
  7. 2.2 44 km NE of Luquillo, Puerto Rico
  8. 1.8 11 km NNW of San Juan, Puerto Rico
  9. 2.1 37 km NNW of Culebra, Puerto Rico
  10. 1.7 5 km E of San Juan, Puerto Rico
  11. 2.3 6 km NW of Trujillo Alto, Puerto Rico
  12. 2.4 0 km E of Río Lajas, Puerto Rico
  13. 1.8 12 km N of San Juan, Puerto Rico
  14. 2.7 2 km NNE of Levittown, Puerto Rico
  15. 2.8 12 km SSE of Punta Santiago, 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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