QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Isabel Segunda, PR

No earthquake was likely felt in Isabel Segunda in the 24 hours to 11:11 pm AST (03:11 UTC). The last one was M 2.9, 26 km (16 mi) SSE, at 12:08 pm AST on 29 October 2026, estimated intensity II (weak) in town. Every earthquake near Isabel Segunda

This page: a magnitude 2.2 earthquake was recorded in Isabel Segunda, PR, at 12:27 pm AST on 21 June 2024 (16:27 UTC), 16 km deep.

USGS: 0 km SSE of Isabel Segunda, Puerto Rico

72 km (45 mi) ESE of San Juan, PR

12:27 pm AST, Jun 21, 2024 · · 16 km deep · released about 62 lb of TNT

Every earthquake near Isabel Segunda 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
12:27 pm AST on 21 June 2024 ()
Where
in Isabel Segunda, PR · earthquakes near Isabel Segunda
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 873 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 9 km (6 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Isabel Segunda in town, intensity II · Esperanza 6 km, intensity II. Estimated for each town centre; each link is that town's own record.

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.

For this area

The largest earthquake within 50 km since 2016 was M 4.8 on 2021-10-08 — about 7,700 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 18.1443, -65.4400. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Vieques Municipio, PR 2 km (1 mi) SSE earthquakes near Vieques Municipio
Ceiba Municipio, PR 23 km (14 mi) WNW earthquakes near Ceiba Municipio
Culebra Municipio, PR 25 km (15 mi) NE earthquakes near Culebra Municipio
Fajardo Municipio, PR 31 km (19 mi) NNW earthquakes near Fajardo Municipio
Naguabo Municipio, PR 32 km (20 mi) WNW earthquakes near Naguabo Municipio
Humacao Municipio, PR 37 km (23 mi) W 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.

On USGS

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