QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

1 km WNW of Morovis, Puerto Rico

· 120 km deep · released about 1.4 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morovis Municipio 1 kmCorozal Municipio 10 kmCiales Municipio 11 kmOrocovis Municipio 12 kmVega Baja Municipio 14 kmVega Alta Municipio 15 kmManatí Municipio 15 kmFlorida Municipio 16 kmNaranjito Municipio 18 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
120 km below the surface
Felt
no reports yet
Nearest
Morovis Municipio, 1 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1674 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 1.4 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 18.3286, -66.4171. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morovis Municipio, PR 1 km (1 mi) NNE of here earthquakes near Morovis Municipio
Corozal Municipio, PR 10 km (6 mi) WNW of here earthquakes near Corozal Municipio
Ciales Municipio, PR 11 km (7 mi) ENE of here earthquakes near Ciales Municipio
Orocovis Municipio, PR 12 km (8 mi) N of here earthquakes near Orocovis Municipio
Vega Baja Municipio, PR 14 km (9 mi) S of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 15 km (9 mi) SW of here earthquakes near Vega Alta Municipio

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

Aftershocks so far

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

  1. 2.5 2 km ESE of Magas Arriba, Puerto Rico
  2. 3.0 4 km N of Animas, Puerto Rico
  3. 3.3 1 km ESE of Guaynabo, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.