QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

Earthquake near Pájaros, PR

No earthquake was likely felt in Pájaros in the 24 hours to 5:18 am AST (09:18 UTC). The last one was M 4.8, 91 km (56 mi) WSW, at 9:19 am AST on 18 September 2026, estimated intensity III (weak) in town; 86 felt reports to USGS. Every earthquake near Pájaros

This page: a magnitude 3.1 earthquake was recorded 6 km (4 mi) south-southeast of Pájaros, PR, at 7:58 pm AST on 1 July 2022 (23:58 UTC), 66 km deep. 1 person has reported feeling it to USGS.

USGS: 5 km SSE of Pájaros, Puerto Rico

7 km (4 mi) SSW of Bayamón, PR

7:58 pm AST, Jul 1, 2022 · · 66 km deep · released about 1,300 lb of TNT

Every earthquake near Pájaros Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bayamón Municipio 3 kmToa Alta Municipio 8 kmNaranjito Municipio 8 kmGuaynabo Municipio 8 kmAguas Buenas Municipio 10 kmComerío Municipio 12 kmCataño Municipio 14 kmToa Baja Municipio 15 kmCorozal Municipio 15 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
7:58 pm AST on 1 July 2022 ()
Where
6 km (4 mi) south-southeast of Pájaros, PR · earthquakes near Pájaros
Magnitude
M 3.1 (md)
Depth
66 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Bayamón Municipio, 3 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1555 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 it was probably too small to be felt, even directly above it. In Pájaros, 6 km away, the estimate is intensity II (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.

Earthquakes near other towns within 30 km: Naranjito, Mucarabones, Galateo, Guaynabo, Bayamón, Candelaria.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 260,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,200× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 4.6 on 2019-03-12 — about 180 times the energy of this one.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.8 12 km N of Garrochales, Puerto Rico · 48 km NW of this epicentre
  2. 5.1 3 km W of Aguas Buenas, Puerto Rico · 9 km SE of this epicentre
  3. 5.0 3 km N of Brenas, Puerto Rico · 25 km NW 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 18.3240, -66.1873. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bayamón Municipio, PR 3 km (2 mi) NE earthquakes near Bayamón Municipio
Toa Alta Municipio, PR 8 km (5 mi) NW earthquakes near Toa Alta Municipio
Naranjito Municipio, PR 8 km (5 mi) WSW earthquakes near Naranjito Municipio
Guaynabo Municipio, PR 8 km (5 mi) ENE earthquakes near Guaynabo Municipio
Aguas Buenas Municipio, PR 10 km (6 mi) SE earthquakes near Aguas Buenas Municipio
Comerío Municipio, PR 12 km (7 mi) SSW earthquakes near Comerío Municipio

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

Aftershocks so far

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

  1. 1.8 3 km SW of Naranjito, Puerto Rico
  2. 3.4 1 km SSW of Pájaros, Puerto Rico
  3. 3.5 3 km S of Animas, Puerto Rico
  4. 2.8 13 km N of Levittown, Puerto Rico
  5. 3.5 1 km NNW of Trujillo Alto, Puerto Rico
  6. 2.6 5 km WNW of Jagual, Puerto Rico
  7. 2.4 6 km ESE of Villalba, Puerto Rico
  8. 3.7 2 km ESE of Tierras Nuevas Poniente, Puerto Rico
  9. 2.1 4 km SSE of Cayey, Puerto Rico
  10. 3.2 18 km N of Suárez, Puerto Rico
  11. 2.5 2 km SW of San Antonio, Puerto Rico
  12. 3.0 8 km NNW of Dorado, Puerto Rico
  13. 3.3 1 km SE of Toa Baja, Puerto Rico
  14. 2.4 7 km SSE of Jobos, Puerto Rico
  15. 2.8 2 km SE of Jobos, 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.