QuakeIndex

Earthquake · reviewed by a seismologist

M 4.4ml

89 km N of Culebra, Puerto Rico

· 17 km deep · released about 60 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 87 kmFajardo Municipio 87 kmLuquillo Municipio 95 kmRío Grande Municipio 99 kmCeiba Municipio 102 kmLoíza Municipio 103 kmCarolina Municipio 108 kmCanóvanas Municipio 108 kmVieques Municipio 111 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 4.4 (ml)
Depth
17 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Culebra Municipio, 87 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2388 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 60 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 2,800× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 130× the energy of this one
  3. Magna, Utah 2020 M 5.7 89× the energy of this one
  4. This earthquake M 4.4 about 60 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 130× 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 19.1090, -65.2656. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 87 km (54 mi) N of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 87 km (54 mi) NNE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 95 km (59 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 99 km (61 mi) NE of here earthquakes near Río Grande Municipio
Ceiba Municipio, PR 102 km (64 mi) NNE of here earthquakes near Ceiba Municipio
Loíza Municipio, PR 103 km (64 mi) NE of here earthquakes near Loíza Municipio

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

Aftershocks so far

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

  1. 3.3 75.2 km SSW of Luquillo, Puerto Rico
  2. 3.5 73 km N of Culebra, Puerto Rico
  3. 3.4 81 km NNE of Luquillo, Puerto Rico
  4. 3.3 76 km NNE of Luquillo, Puerto Rico
  5. 3.4 74 km NNE of Luquillo, Puerto Rico
  6. 3.4 83 km NNE of Luquillo, Puerto Rico
  7. 3.3 79 km NNE of Luquillo, Puerto Rico
  8. 3.6 69 km NNW of Charlotte Amalie, U.S. Virgin Islands
  9. 3.6 75 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 2.9 44 km NNW of Charlotte Amalie, U.S. Virgin Islands
  11. 3.6 63 km NNW of Charlotte Amalie, U.S. Virgin Islands
  12. 3.6 95 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 3.5 74 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 3.7 72 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.6 66 km NNW of Charlotte Amalie, U.S. Virgin Islands

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 4.5 on 2018-02-09 — it released about 1.4 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.