QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Earthquake near San Juan, PR

No earthquake was likely felt in San Juan in the 24 hours to 1:01 pm AST (17:01 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 3.0 earthquake was recorded 45 km (28 mi) north of San Juan, PR, at 3:27 pm AST on 2 November 2024 (19:27 UTC), 30 km deep.

USGS: 45 km N of San Juan, Puerto Rico

52 km (32 mi) N of San Juan, PR · 51 km (32 mi) N of Carolina, PR

3:27 pm AST, Nov 2, 2024 · · 30 km deep · released about 920 lb of TNT

Every earthquake near San Juan Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Loíza Municipio 48 kmCataño Municipio 49 kmToa Baja Municipio 49 kmDorado Municipio 50 kmSan Juan Municipio 50 kmCarolina Municipio 53 kmVega Alta Municipio 57 kmGuaynabo Municipio 59 kmBayamón Municipio 59 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
3:27 pm AST on 2 November 2024 ()
Where
45 km (28 mi) north of San Juan, PR · earthquakes near San Juan
Magnitude
M 3.0 (md)
Depth
30 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 48 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 739 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 21 km (13 mi) from the epicentre. In San Juan, 45 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.

How big was it?

This earthquake released about 920 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 370,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 920 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 520 times the energy of this one.

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

  1. 5.1 66 km N of Brenas, Puerto Rico · 41 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 18.8692, -66.0403. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Loíza Municipio, PR 48 km (30 mi) SSE earthquakes near Loíza Municipio
Cataño Municipio, PR 49 km (30 mi) SSW earthquakes near Cataño Municipio
Toa Baja Municipio, PR 49 km (30 mi) SSW earthquakes near Toa Baja Municipio
Dorado Municipio, PR 50 km (31 mi) SSW earthquakes near Dorado Municipio
San Juan Municipio, PR 50 km (31 mi) S earthquakes near San Juan Municipio
Carolina Municipio, PR 53 km (33 mi) S earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 3.3 63 km N of Loíza, Puerto Rico
  2. 2.9 34 km N of San Juan, Puerto Rico
  3. 2.9 72 km N of Brenas, Puerto Rico
  4. 2.8 74 km N of Brenas, Puerto Rico
  5. 3.7 68 km N of Tierras Nuevas Poniente, Puerto Rico
  6. 3.1 73 km N of Brenas, Puerto Rico
  7. 3.0 1 km NNW of Ingenio, Puerto Rico
  8. 3.2 9 km NNE of San Juan, Puerto Rico
  9. 3.0 34 km N of Tierras Nuevas Poniente, Puerto Rico
  10. 3.3 7 km ESE of San Juan, Puerto Rico
  11. 3.1 75 km N of San Juan, Puerto Rico
  12. 3.1 75 km N of Brenas, Puerto Rico
  13. 2.8 31 km N of Brenas, Puerto Rico
  14. 3.1 64 km N of Brenas, Puerto Rico
  15. 3.1 68 km N of San Juan, 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.