Earthquake · reviewed by a seismologist
M 2.4md
Earthquake near Barranquitas, PR
No earthquake was likely felt in Barranquitas in the 24 hours to 1:38 pm AST (17:38 UTC). The last one was M 3.3, 37 km (23 mi) SSW, at 8:40 am AST on 1 November 2026, estimated intensity II (weak) in town. Every earthquake near Barranquitas
This page: a magnitude 2.4 earthquake was recorded 4 km (2 mi) north-northwest of Barranquitas, PR, at 5:04 am AST on 21 November 2020 (09:04 UTC), 20 km deep.
USGS: 3 km NNW of Barranquitas, Puerto Rico
34 km (21 mi) SW of San Juan, PR · 25 km (15 mi) SW of Bayamón, PR
- When
- 5:04 am AST on 21 November 2020 ()
- Where
- 4 km (2 mi) north-northwest of Barranquitas, PR · earthquakes near Barranquitas
- Magnitude
- M 2.4 (md)
- Depth
- 20 km below the surface
- Felt
- no reports yet
- Nearest
- Barranquitas Municipio, 2 km SSE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2181 days ago
Earthquake alerts for Barranquitas, PR
Get a notification in this browser when USGS records an earthquake near Barranquitas, PR. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 6 km (4 mi) from the epicentre. In Barranquitas, 4 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: Comerío, Aibonito, Naranjito, Pastos, Corozal, Parcelas La Milagrosa.
How big was it?
This earthquake released about 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
- Magna, Utah 2020 M 5.7 95,000× the energy of this one
- Around the size people start to feel M 3.0 8.5× the energy of this one
- This earthquake M 2.4 about 110 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 5.0 on 2020-01-07 — about 8,500 times the energy of this one.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 5.8 12 km N of Garrochales, Puerto Rico · 46 km NW of this epicentre
- 5.1 3 km W of Aguas Buenas, Puerto Rico · 20 km ENE of this epicentre
- 5.0 3 km N of Brenas, Puerto Rico · 32 km N 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 18.2176, -66.3206. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Barranquitas Municipio, PR | 2 km (1 mi) | SSE | earthquakes near Barranquitas Municipio |
| Corozal Municipio, PR | 10 km (6 mi) | N | earthquakes near Corozal Municipio |
| Comerío Municipio, PR | 11 km (7 mi) | E | earthquakes near Comerío Municipio |
| Naranjito Municipio, PR | 11 km (7 mi) | NE | earthquakes near Naranjito Municipio |
| Aibonito Municipio, PR | 11 km (7 mi) | SSE | earthquakes near Aibonito Municipio |
| Orocovis Municipio, PR | 12 km (8 mi) | W | earthquakes near Orocovis Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
5 earthquakes have been recorded within 50 km since this one.
- 2.3 1 km SSE of Cidra, Puerto Rico
- 2.1 2 km NW of Tallaboa, Puerto Rico
- 2.1 1 km SSW of Tallaboa Alta, Puerto Rico
- 2.2 2 km S of Tallaboa Alta, Puerto Rico
- 2.8 13 km S of Central Aguirre, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.