QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6Md

Earthquake near Campo Rico, PR

No earthquake was likely felt in Campo Rico in the 24 hours to 9:10 am AST (13:10 UTC). The last one was M 4.1, 73 km (45 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 Campo Rico

This page: a magnitude 2.6 earthquake was recorded in Campo Rico, PR, at 4:21 pm AST on 31 December 2016 (20:21 UTC), 32 km deep.

USGS: 1 km WSW of Campo Rico, Puerto Rico

18 km (11 mi) ESE of San Juan, PR · 12 km (7 mi) SE of Carolina, PR

4:21 pm AST, Dec 31, 2016 · · 32 km deep · released about 240 lb of TNT

Every earthquake near Campo Rico Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Canóvanas Municipio 2 kmCarolina Municipio 10 kmTrujillo Alto Municipio 10 kmGurabo Municipio 10 kmJuncos Municipio 12 kmRío Grande Municipio 13 kmLoíza Municipio 13 kmLas Piedras Municipio 17 kmSan Juan Municipio 20 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
4:21 pm AST on 31 December 2016 ()
Where
in Campo Rico, PR · earthquakes near Campo Rico
Magnitude
M 2.6 (Md)
Depth
32 km below the surface
Felt
no reports yet
Nearest
Canóvanas Municipio, 2 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3520 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. 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: Canovanas, Santa Barbara, Benitez, San Isidro, La Dolores, Carolina.

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 4.6 on 2016-12-05 — about 1,000 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 25 km WSW of this epicentre
  2. 5.0 3 km N of Brenas, Puerto Rico · 49 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 18.3314, -65.9080. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Canóvanas Municipio, PR 2 km (1 mi) E earthquakes near Canóvanas Municipio
Carolina Municipio, PR 10 km (6 mi) NW earthquakes near Carolina Municipio
Trujillo Alto Municipio, PR 10 km (6 mi) W earthquakes near Trujillo Alto Municipio
Gurabo Municipio, PR 10 km (6 mi) SW earthquakes near Gurabo Municipio
Juncos Municipio, PR 12 km (7 mi) S earthquakes near Juncos Municipio
Río Grande Municipio, PR 13 km (8 mi) ENE earthquakes near Río Grande 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. 2.5 10 km S of Emajagua, Puerto Rico
  2. 2.9 Puerto Rico region
  3. 2.3 10 km SSE of Emajagua, Puerto Rico
  4. 2.5 0 km SW of Aguas Claras, Puerto Rico
  5. 1.6 3 km SE of Punta Santiago, Puerto Rico
  6. 1.8 8 km SSW of Emajagua, Puerto Rico
  7. 2.2 10 km S of Emajagua, Puerto Rico
  8. 2.5 9 km S of Emajagua, Puerto Rico
  9. 2.5 20 km NNE of San Juan, Puerto Rico
  10. 1.8 15 km WSW of Esperanza, Puerto Rico
  11. 2.4 11 km S of Emajagua, Puerto Rico
  12. 2.5 11 km S of Emajagua, Puerto Rico
  13. 2.7 11 km SE of Emajagua, Puerto Rico
  14. 2.1 11 km S of Emajagua, Puerto Rico
  15. 3.6 20 km NNW of Loíza, 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.