Earthquake · reviewed by a seismologist
M 2.1md
Earthquake near Juncos, PR
No earthquake was likely felt in Juncos in the 24 hours to 9:03 am AST (13:03 UTC). The last one was M 4.1, 69 km (43 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Juncos
This page: a magnitude 2.1 earthquake was recorded 4 km (3 mi) south-southeast of Juncos, PR, at 12:51 pm AST on 13 March 2025 (16:51 UTC), 17 km deep.
USGS: 4 km SSE of Juncos, Puerto Rico
29 km (18 mi) SE of San Juan, PR · 15 km (9 mi) ESE of Caguas, PR
- When
- 12:51 pm AST on 13 March 2025 ()
- Where
- 4 km (3 mi) south-southeast of Juncos, PR · earthquakes near Juncos
- Magnitude
- M 2.1 (md)
- Depth
- 17 km below the surface
- Felt
- no reports yet
- Nearest
- Juncos Municipio, 4 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 608 days ago
Earthquake alerts for Juncos, PR
Get a notification in this browser when USGS records an earthquake near Juncos, 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 2 km (1 mi) from the epicentre. In Juncos, 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: Las Piedras, El Mangó, La Fermina, San Lorenzo, Pueblito del Rio, Peña Pobre.
How big was it?
This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
- Magna, Utah 2020 M 5.7 250,000× the energy of this one
- Around the size people start to feel M 3.0 22× the energy of this one
- This earthquake M 2.1 about 43 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 5,600 times the energy of this one.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.1 3 km W of Aguas Buenas, Puerto Rico · 25 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 18.1917, -65.9058. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Juncos Municipio, PR | 4 km (2 mi) | N | earthquakes near Juncos Municipio |
| Las Piedras Municipio, PR | 4 km (2 mi) | E | earthquakes near Las Piedras Municipio |
| San Lorenzo Municipio, PR | 9 km (6 mi) | WSW | earthquakes near San Lorenzo Municipio |
| Gurabo Municipio, PR | 12 km (7 mi) | NW | earthquakes near Gurabo Municipio |
| Humacao Municipio, PR | 14 km (9 mi) | ESE | earthquakes near Humacao Municipio |
| Yabucoa Municipio, PR | 15 km (10 mi) | SSE | earthquakes near Yabucoa Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
30 earthquakes have been recorded within 50 km since this one.
- 3.2 8 km NE of Dorado, Puerto Rico
- 2.6 6 km WSW of Guaynabo, Puerto Rico
- 3.0 3 km N of Palomas, Puerto Rico
- 3.6 1 km ESE of Carolina, Puerto Rico
- 1.8 1 km E of Mariano Colón, Puerto Rico
- 1.7 7 km NNE of Yaurel, Puerto Rico
- 3.6 1 km SSE of Galateo, Puerto Rico
- 2.8 5 km E of Naranjito, Puerto Rico
- 2.8 26 km SE of El Negro, Puerto Rico
- 2.5 5 km SSE of Bajandas, Puerto Rico
- 1.7 2 km E of Arroyo, Puerto Rico
- 2.1 5 km SSE of Bajandas, Puerto Rico
- 2.6 3 km ESE of Cataño, Puerto Rico
- 3.1 1 km S of Campanilla, Puerto Rico
- 2.3 1 km SSE of Salinas, 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.