QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

0 km SSE of Isabel Segunda, Puerto Rico

· 16 km deep · released about 62 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 2 kmCeiba Municipio 23 kmCulebra Municipio 25 kmFajardo Municipio 31 kmNaguabo Municipio 32 kmHumacao Municipio 37 kmLuquillo Municipio 38 kmYabucoa Municipio 45 kmLas Piedras Municipio 46 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 2.2 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 2 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 828 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 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 18.1443, -65.4400. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 2 km (1 mi) NNW of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 23 km (14 mi) ESE of here earthquakes near Ceiba Municipio
Culebra Municipio, PR 25 km (15 mi) SW of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 31 km (19 mi) SSE of here earthquakes near Fajardo Municipio
Naguabo Municipio, PR 32 km (20 mi) ESE of here earthquakes near Naguabo Municipio
Humacao Municipio, PR 37 km (23 mi) E of here earthquakes near Humacao Municipio

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

Aftershocks so far

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

  1. 2.1 4 km SSW of Las Piedras, Puerto Rico
  2. 2.6 3 km SSW of Las Piedras, Puerto Rico
  3. 2.1 4 km SSE of Juncos, Puerto Rico
  4. 2.5 9 km SE of Emajagua, Puerto Rico
  5. 2.4 5 km SSW of Las Piedras, Puerto Rico
  6. 2.6 37 km S of Esperanza, Puerto Rico
  7. 2.5 18 km WSW of Esperanza, Puerto Rico
  8. 3.0 7 km SE of Esperanza, Puerto Rico
  9. 2.5 10 km SE of Esperanza, Puerto Rico
  10. 2.7 33 km SSE of Esperanza, Puerto Rico
  11. 2.2 20 km SE of El Negro, Puerto Rico
  12. 3.3 22 km SSW of Charlotte Amalie, U.S. Virgin Islands
  13. 3.1 16 km SW of Charlotte Amalie, U.S. Virgin Islands
  14. 2.1 1 km NW of Humacao, Puerto Rico
  15. 2.8 4 km WNW of Candelero Arriba, 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 4.8 on 2021-10-08 — it released about 7,700 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.