QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near San Juan, PR

No earthquake was likely felt in San Juan in the 24 hours to 8:02 pm AST (00:02 UTC). The last one was M 4.1, 99 km (62 mi) SE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near San Juan

This page: a magnitude 2.6 earthquake was recorded 11 km (7 mi) north of San Juan, PR, at 10:12 pm AST on 6 July 2019 (02:12 UTC), 75 km deep.

USGS: 10 km N of San Juan, Puerto Rico

19 km (12 mi) NNW of San Juan, PR

10:12 pm AST, Jul 6, 2019 · · 75 km deep · released about 240 lb of TNT

Every earthquake near San Juan Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cataño Municipio 13 kmToa Baja Municipio 14 kmSan Juan Municipio 16 kmDorado Municipio 17 kmLoíza Municipio 23 kmBayamón Municipio 24 kmGuaynabo Municipio 24 kmCarolina Municipio 25 kmToa Alta Municipio 25 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
10:12 pm AST on 6 July 2019 ()
Where
11 km (7 mi) north of San Juan, PR · earthquakes near San Juan
Magnitude
M 2.6 (md)
Depth
75 km below the surface
Felt
no reports yet
Nearest
Cataño Municipio, 13 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2603 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 San Juan, 11 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: Cataño, Levittown, Sabana Seca, Ingenio, Eleanor Roosevelt, Bayamón.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 2017-08-18 — about 2,000 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 · 46 km W of this epicentre
  2. 5.1 3 km W of Aguas Buenas, Puerto Rico · 33 km S of this epicentre
  3. 5.0 3 km N of Brenas, Puerto Rico · 24 km WSW 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 18.5606, -66.1250. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cataño Municipio, PR 13 km (8 mi) S earthquakes near Cataño Municipio
Toa Baja Municipio, PR 14 km (8 mi) SSW earthquakes near Toa Baja Municipio
San Juan Municipio, PR 16 km (10 mi) SSE earthquakes near San Juan Municipio
Dorado Municipio, PR 17 km (11 mi) WSW earthquakes near Dorado Municipio
Loíza Municipio, PR 23 km (14 mi) ESE earthquakes near Loíza Municipio
Bayamón Municipio, PR 24 km (15 mi) S earthquakes near Bayamón Municipio

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

Aftershocks so far

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

  1. 2.3 2 km W of Bayamon, Puerto Rico
  2. 1.7 32 km N of Tierras Nuevas Poniente, Puerto Rico
  3. 2.5 16 km N of San Juan, Puerto Rico
  4. 2.0 1 km S of Manatí, Puerto Rico
  5. 2.6 19 km NNE of Vieques, Puerto Rico
  6. 1.5 5 km WSW of Naranjito, Puerto Rico
  7. 2.1 22 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 2.5 22 km N of Tierras Nuevas Poniente, Puerto Rico
  9. 2.8 2 km ESE of Levittown, Puerto Rico
  10. 2.5 1 km S of Cataño, Puerto Rico
  11. 2.1 21 km NNE of Tierras Nuevas Poniente, Puerto Rico
  12. 2.0 6 km S of Caguas, Puerto Rico
  13. 2.2 43 km N of Suárez, Puerto Rico
  14. 2.4 1 km WNW of Pájaros, Puerto Rico
  15. 2.0 4 km NNE of Levittown, 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.