QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

Earthquake near Bajandas, PR

No earthquake was likely felt in Bajandas in the 24 hours to 8:30 am AST (12:30 UTC). The last one was M 4.1, 52 km (32 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Bajandas

This page: a magnitude 3.2 earthquake was recorded in Bajandas, PR, at 2:22 pm AST on 26 June 2023 (18:22 UTC), 12 km deep. 2 people have reported feeling it to USGS.

USGS: 1 km NE of Bajandas, Puerto Rico

41 km (25 mi) SE of San Juan, PR · 29 km (18 mi) ESE of Caguas, PR

2:22 pm AST, Jun 26, 2023 · · 12 km deep · released about 1.1 tons of TNT

Every earthquake near Bajandas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Humacao Municipio 4 kmNaguabo Municipio 6 kmLas Piedras Municipio 11 kmYabucoa Municipio 15 kmJuncos Municipio 16 kmCeiba Municipio 18 kmCanóvanas Municipio 22 kmSan Lorenzo Municipio 22 kmMaunabo Municipio 23 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
2:22 pm AST on 26 June 2023 ()
Where
in Bajandas, PR · earthquakes near Bajandas
Magnitude
M 3.2 (md)
Depth
12 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Humacao Municipio, 4 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1231 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 47 km (29 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: Humacao 6 km, intensity III · Aguas Claras 16 km, intensity III · Fajardo 21 km, intensity II · Emajagua 22 km, intensity II · Luquillo 23 km, intensity II · Jagual 24 km, intensity II · Río Grande 24 km, intensity II · Caguas 30 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 160,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,100× the energy of this one
  4. This earthquake M 3.2 about 1.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.2× 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.8 on 2021-10-08 — about 230 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 40 km WNW of this epicentre

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 18.1688, -65.7712. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Humacao Municipio, PR 4 km (3 mi) SSW earthquakes near Humacao Municipio
Naguabo Municipio, PR 6 km (4 mi) NE earthquakes near Naguabo Municipio
Las Piedras Municipio, PR 11 km (7 mi) W earthquakes near Las Piedras Municipio
Yabucoa Municipio, PR 15 km (10 mi) SW earthquakes near Yabucoa Municipio
Juncos Municipio, PR 16 km (10 mi) WNW earthquakes near Juncos Municipio
Ceiba Municipio, PR 18 km (11 mi) ENE earthquakes near Ceiba 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. 2.8 1 km SSW of Cidra, Puerto Rico
  2. 3.3 4 km ENE of Guaynabo, Puerto Rico
  3. 2.6 Puerto Rico region
  4. 3.1 10 km S of Lamboglia, Puerto Rico
  5. 3.3 25 km SE of El Negro, Puerto Rico
  6. 2.5 16 km SE of El Negro, Puerto Rico
  7. 2.3 6 km S of Punta Santiago, Puerto Rico
  8. 2.6 Puerto Rico region
  9. 2.6 2 km WNW of Bayamon, Puerto Rico
  10. 2.9 2 km NNE of Parcelas La Milagrosa, Puerto Rico
  11. 2.7 1 km W of Juncos, Puerto Rico
  12. 3.0 Puerto Rico region
  13. 3.0 Puerto Rico region
  14. 2.6 6 km S of Emajagua, Puerto Rico
  15. 2.7 5 km SSE of Esperanza, 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.