QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

16 km NNE of Suárez, Puerto Rico

· 81 km deep · released about 780 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loíza Municipio 20 kmRío Grande Municipio 22 kmLuquillo Municipio 25 kmCarolina Municipio 26 kmCanóvanas Municipio 28 kmFajardo Municipio 31 kmSan Juan Municipio 33 kmTrujillo Alto Municipio 34 kmGurabo Municipio 38 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 2.9 (md)
Depth
81 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 20 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1958 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 780 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.2× the energy of this one
  4. This earthquake M 2.9 about 780 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 18.5721, -65.8036. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 20 km (13 mi) NE of here earthquakes near Loíza Municipio
Río Grande Municipio, PR 22 km (14 mi) N of here earthquakes near Río Grande Municipio
Luquillo Municipio, PR 25 km (15 mi) NNW of here earthquakes near Luquillo Municipio
Carolina Municipio, PR 26 km (16 mi) NE of here earthquakes near Carolina Municipio
Canóvanas Municipio, PR 28 km (18 mi) NNE of here earthquakes near Canóvanas Municipio
Fajardo Municipio, PR 31 km (19 mi) NW of here earthquakes near Fajardo Municipio

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

Aftershocks so far

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

  1. 2.9 0 km WNW of Aguas Buenas, Puerto Rico
  2. 3.1 13 km N of Levittown, Puerto Rico
  3. 3.2 3 km S of Guaynabo, Puerto Rico
  4. 3.2 38 km N of San Juan, Puerto Rico
  5. 3.5 1 km ENE of Dorado, Puerto Rico
  6. 3.2 36 km NNE of Luquillo, Puerto Rico
  7. 3.0 5 km ESE of Cataño, Puerto Rico
  8. 2.5 19 km N of San Juan, Puerto Rico
  9. 2.9 2 km NNE of Levittown, Puerto Rico
  10. 2.8 6 km N of Martorell, Puerto Rico
  11. 2.9 Puerto Rico region
  12. 2.9 23 km N of Loíza, Puerto Rico
  13. 3.4 0 km NE of Mucarabones, Puerto Rico
  14. 3.2 42 km NNE of Vieques, Puerto Rico
  15. 3.0 34 km N of San Juan, 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.