QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near El Negro, PR

No earthquake was likely felt in El Negro in the 24 hours to 10:47 am AST (14:47 UTC). The last one was M 2.2, 7 km (5 mi) SSE, at 2:59 pm AST on 4 November 2026, estimated intensity II (weak) in town. Every earthquake near El Negro

This page: a magnitude 2.6 earthquake was recorded in El Negro, PR, at 7:32 am AST on 18 September 2024 (11:32 UTC), 10 km deep. 2 people have reported feeling it to USGS.

USGS: 1 km NW of El Negro, Puerto Rico

45 km (28 mi) SSE of San Juan, PR · 28 km (17 mi) SE of Caguas, PR

7:32 am AST, Sep 18, 2024 · · 10 km deep · released about 220 lb of TNT

Every earthquake near El Negro Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yabucoa Municipio 1 kmMaunabo Municipio 7 kmHumacao Municipio 13 kmPatillas Municipio 14 kmLas Piedras Municipio 15 kmSan Lorenzo Municipio 16 kmJuncos Municipio 20 kmArroyo Municipio 21 kmNaguabo Municipio 22 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
7:32 am AST on 18 September 2024 ()
Where
in El Negro, PR · earthquakes near El Negro
Magnitude
M 2.6 (md)
Depth
10 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Yabucoa Municipio, 1 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 784 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. 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: Emajagua 6 km, intensity II · Humacao 12 km, intensity II · Jagual 19 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 220 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 70,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 50,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.4× the energy of this one
  4. This earthquake M 2.6 about 220 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 4.6 on 2016-12-05 — about 1,100 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 · 37 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 18.0482, -65.8618. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yabucoa Municipio, PR 1 km (1 mi) N earthquakes near Yabucoa Municipio
Maunabo Municipio, PR 7 km (4 mi) SW earthquakes near Maunabo Municipio
Humacao Municipio, PR 13 km (8 mi) NE earthquakes near Humacao Municipio
Patillas Municipio, PR 14 km (9 mi) WSW earthquakes near Patillas Municipio
Las Piedras Municipio, PR 15 km (10 mi) N earthquakes near Las Piedras Municipio
San Lorenzo Municipio, PR 16 km (10 mi) NW earthquakes near San Lorenzo 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. 2.7 2 km NNW of Coco, Puerto Rico
  2. 2.4 18 km S of Emajagua, Puerto Rico
  3. 1.9 3 km WNW of Jobos, Puerto Rico
  4. 3.3 7 km ESE of San Juan, Puerto Rico
  5. 2.2 20 km SE of El Negro, Puerto Rico
  6. 2.1 8 km S of Lamboglia, Puerto Rico
  7. 2.1 1 km ESE of Parcelas La Milagrosa, Puerto Rico
  8. 3.5 4 km ESE of G. L. Garcia, Puerto Rico
  9. 2.2 1 km SSW of G. L. Garcia, Puerto Rico
  10. 2.1 1 km NW of Humacao, Puerto Rico
  11. 3.4 4 km SE of G. L. Garcia, Puerto Rico
  12. 2.8 4 km WNW of Candelero Arriba, Puerto Rico
  13. 2.3 4 km SSE of Salinas, Puerto Rico
  14. 3.0 6 km E of Esperanza, Puerto Rico
  15. 2.0 3 km E of Santa Clara, 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.