QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

1 km S of Canovanas, Puerto Rico

· 119 km deep · released about 1.8 tons of TNT

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10 km30 km60 km120 km N Canóvanas Municipio 4 kmCarolina Municipio 8 kmLoíza Municipio 11 kmRío Grande Municipio 11 kmTrujillo Alto Municipio 11 kmGurabo Municipio 13 kmJuncos Municipio 15 kmSan Juan Municipio 19 kmLas Piedras Municipio 19 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 3.4 (md)
Depth
119 km below the surface
Felt
no reports yet
Nearest
Canóvanas Municipio, 4 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 694 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 1.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 95,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,300× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,000× the energy of this one
  4. This earthquake M 3.4 about 1.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 3.7× 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 18.3598, -65.8990. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Canóvanas Municipio, PR 4 km (2 mi) NNW of here earthquakes near Canóvanas Municipio
Carolina Municipio, PR 8 km (5 mi) ESE of here earthquakes near Carolina Municipio
Loíza Municipio, PR 11 km (7 mi) SSE of here earthquakes near Loíza Municipio
Río Grande Municipio, PR 11 km (7 mi) W of here earthquakes near Río Grande Municipio
Trujillo Alto Municipio, PR 11 km (7 mi) ENE of here earthquakes near Trujillo Alto Municipio
Gurabo Municipio, PR 13 km (8 mi) NE of here earthquakes near Gurabo Municipio

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

Aftershocks so far

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

  1. 2.8 4 km WNW of Candelero Arriba, Puerto Rico
  2. 2.0 3 km E of Santa Clara, Puerto Rico
  3. 3.2 34 km NNE of San Juan, Puerto Rico
  4. 3.0 11 km NNW of San Juan, Puerto Rico
  5. 2.8 19 km NNE of San Juan, Puerto Rico
  6. 2.2 2 km E of Cayey, Puerto Rico
  7. 2.5 5 km NNW of Jagual, Puerto Rico
  8. 1.8 4 km NNW of Yaurel, Puerto Rico
  9. 3.5 11 km SSE of Daguao, Puerto Rico
  10. 3.2 3 km SE of Bartolo, Puerto Rico
  11. 2.4 5 km SSE of Emajagua, Puerto Rico
  12. 2.9 9 km NNE of Brenas, Puerto Rico
  13. 3.2 25 km NNE of Luquillo, Puerto Rico
  14. 2.0 6 km NW of Palomas, Puerto Rico
  15. 2.8 6 km WNW of Palomas, 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 68 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.