QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

Puerto Rico region

· 121 km deep · released about 1.4 tons of TNT

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10 km30 km60 km120 km N Morovis Municipio 7 kmCorozal Municipio 8 kmVega Alta Municipio 9 kmVega Baja Municipio 11 kmToa Alta Municipio 13 kmNaranjito Municipio 15 kmManatí Municipio 16 kmDorado Municipio 17 kmCiales Municipio 17 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 (md)
Depth
121 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Morovis Municipio, 7 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1115 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 1.4 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 6.7 120,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,800× the energy of this one
  4. This earthquake M 3.3 about 1.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.9× 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 18.3642, -66.3693. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morovis Municipio, PR 7 km (5 mi) NE of here earthquakes near Morovis Municipio
Corozal Municipio, PR 8 km (5 mi) NW of here earthquakes near Corozal Municipio
Vega Alta Municipio, PR 9 km (5 mi) SSW of here earthquakes near Vega Alta Municipio
Vega Baja Municipio, PR 11 km (7 mi) SSE of here earthquakes near Vega Baja Municipio
Toa Alta Municipio, PR 13 km (8 mi) W of here earthquakes near Toa Alta Municipio
Naranjito Municipio, PR 15 km (9 mi) NW of here earthquakes near Naranjito Municipio

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

Aftershocks so far

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

  1. 2.3 5 km SSE of Salinas, Puerto Rico
  2. 2.4 3 km SSE of Salinas, Puerto Rico
  3. 2.3 Puerto Rico region
  4. 3.3 4 km ENE of Guaynabo, Puerto Rico
  5. 2.6 8 km S of Orocovis, Puerto Rico
  6. 2.3 3 km S of Las Ochenta, Puerto Rico
  7. 2.4 4 km WSW of Central Aguirre, Puerto Rico
  8. 2.5 Puerto Rico region
  9. 2.7 4 km S of Salinas, Puerto Rico
  10. 2.3 4 km SSE of Salinas, Puerto Rico
  11. 1.9 Puerto Rico region
  12. 2.3 1 km SSW of Ponce, Puerto Rico
  13. 2.4 0 km WSW of Ponce, 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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