QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

Earthquake near Quebradillas, PR

No earthquake was likely felt in Quebradillas in the 24 hours to 8:48 pm AST (00:48 UTC). The last one was M 3.4, 36 km (22 mi) NNW, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Quebradillas

This page: a magnitude 3.4 earthquake was recorded 9 km (5 mi) north-northeast of Quebradillas, PR, at 12:15 pm AST on 26 May 2022 (16:15 UTC), 16 km deep.

USGS: 8 km NNE of Quebradillas, Puerto Rico

90 km (56 mi) W of San Juan, PR · 20 km (12 mi) WNW of Arecibo, PR

12:15 pm AST, May 26, 2022 · · 16 km deep · released about 1.7 tons of TNT

Every earthquake near Quebradillas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Quebradillas Municipio 9 kmCamuy Municipio 12 kmIsabela Municipio 14 kmHatillo Municipio 16 kmSan Sebastián Municipio 25 kmMoca Municipio 26 kmAguadilla Municipio 27 kmArecibo Municipio 27 kmLares Municipio 30 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
12:15 pm AST on 26 May 2022 ()
Where
9 km (5 mi) north-northeast of Quebradillas, PR · earthquakes near Quebradillas
Magnitude
M 3.4 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Quebradillas Municipio, 9 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1562 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 54 km (34 mi) from the epicentre. In Quebradillas, 9 km away, the estimate is intensity III (weak). 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: Quebradillas 9 km, intensity III · Hatillo 10 km, intensity III · Isabela 14 km, intensity III · Rafael Hernandez 20 km, intensity II · Arecibo 21 km, intensity II · San Sebastián 25 km, intensity II · Lares 28 km, intensity II · Aguadilla 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 1.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 99,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,100× the energy of this one
  4. This earthquake M 3.4 about 1.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 3.6× 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 10 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 45 km N of San Antonio, Puerto Rico · 46 km NNW of this epicentre
  2. 7.1 24 km NNW of San Antonio, Puerto Rico · 35 km WNW of this epicentre
  3. 6.3 6 km WNW of Aguadilla, Puerto Rico · 35 km WSW of this epicentre
  4. 6.1 15 km WNW of San Antonio, Puerto Rico · 35 km W of this epicentre
  5. 6.1 18 km NNW of San Antonio, Puerto Rico · 31 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 18.5437, -66.9015. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Quebradillas Municipio, PR 9 km (6 mi) SSW earthquakes near Quebradillas Municipio
Camuy Municipio, PR 12 km (7 mi) SSE earthquakes near Camuy Municipio
Isabela Municipio, PR 14 km (8 mi) WSW earthquakes near Isabela Municipio
Hatillo Municipio, PR 16 km (10 mi) SE earthquakes near Hatillo Municipio
San Sebastián Municipio, PR 25 km (15 mi) SSW earthquakes near San Sebastián Municipio
Moca Municipio, PR 26 km (16 mi) SW earthquakes near Moca Municipio

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

Aftershocks so far

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

  1. 2.2 4 km E of Hormigueros, Puerto Rico
  2. 2.5 Puerto Rico region
  3. 2.3 12 km E of Maricao, Puerto Rico
  4. 3.0 1 km NE of La Playa, Puerto Rico
  5. 3.1 18 km NNE of Isabela, Puerto Rico
  6. 2.9 32 km N of Arecibo, Puerto Rico
  7. 2.9 23 km N of Isabela, Puerto Rico
  8. 3.7 2 km ESE of Tierras Nuevas Poniente, Puerto Rico
  9. 2.3 10 km ESE of Maricao, Puerto Rico
  10. 2.9 35 km NNW of San Antonio, Puerto Rico
  11. 1.8 3 km NE of Lares, Puerto Rico
  12. 3.0 23 km NNE of Arecibo, Puerto Rico
  13. 3.0 49 km NNE of Isabela, Puerto Rico
  14. 3.0 18 km N of Arecibo, Puerto Rico
  15. 3.1 2 km SE of La Playa, 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.