Earthquake · reviewed by a seismologist
M 3.0Md
Earthquake near Yaurel, PR
No earthquake was likely felt in Yaurel in the 24 hours to 4:09 am AST (08:09 UTC). The last one was M 3.3, 42 km (26 mi) WSW, at 8:40 am AST on 1 November 2026, estimated intensity II (weak) in town. Every earthquake near Yaurel
This page: a magnitude 3.0 earthquake was recorded 6 km (3 mi) north-northwest of Yaurel, PR, at 4:01 am AST on 6 October 2016 (08:01 UTC), 7.0 km deep.
USGS: 5 km NNW of Yaurel, Puerto Rico
37 km (23 mi) S of San Juan, PR · 18 km (11 mi) SSW of Caguas, PR
- When
- 4:01 am AST on 6 October 2016 ()
- Where
- 6 km (3 mi) north-northwest of Yaurel, PR · earthquakes near Yaurel
- Magnitude
- M 3.0 (Md)
- Depth
- 7.0 km below the surface
- Felt
- no reports yet
- Nearest
- Cayey Municipio, 9 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3599 days ago
Earthquake alerts for Yaurel, PR
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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 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 36 km (22 mi) from the epicentre. In Yaurel, 6 km away, the estimate is intensity III (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.
Likely felt in: Cayey 11 km, intensity III · Guayama 11 km, intensity III · Jagual 13 km, intensity III · Sumidero 17 km, intensity II · Caguas 18 km, intensity II · Emajagua 22 km, intensity II · Humacao 27 km, intensity II · Coamo 30 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 950 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.
- Northridge, California 1994 M 6.7 350,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
- Magna, Utah 2020 M 5.7 11,000× the energy of this one
- This earthquake M 3.0 about 950 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 4.3 on 2016-09-02 — about 89 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 · 22 km NNW 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 18.0741, -66.0745. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Cayey Municipio, PR | 9 km (5 mi) | WNW | earthquakes near Cayey Municipio |
| Arroyo Municipio, PR | 12 km (7 mi) | SSE | earthquakes near Arroyo Municipio |
| Patillas Municipio, PR | 12 km (8 mi) | SE | earthquakes near Patillas Municipio |
| Guayama Municipio, PR | 13 km (8 mi) | SSW | earthquakes near Guayama Municipio |
| San Lorenzo Municipio, PR | 13 km (8 mi) | NE | earthquakes near San Lorenzo Municipio |
| Cidra Municipio, PR | 14 km (9 mi) | NW | earthquakes near Cidra Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
24 earthquakes have been recorded within 50 km since this one.
- 1.9 21 km SW of Esperanza, Puerto Rico
- 2.9 24 km SW of Esperanza, Puerto Rico
- 1.7 27 km SE of Emajagua, Puerto Rico
- 2.1 26 km SE of El Negro, Puerto Rico
- 1.8 2 km N of Vieques, Puerto Rico
- 1.6 11 km E of El Negro, Puerto Rico
- 1.7 1 km E of Bajandas, Puerto Rico
- 2.2 2 km E of Potala Pastillo, Puerto Rico
- 2.2 1 km SW of Salinas, Puerto Rico
- 2.4 4 km ESE of Villalba, Puerto Rico
- 2.7 1 km WNW of Potala Pastillo, Puerto Rico
- 1.8 24 km SE of El Negro, Puerto Rico
- 2.4 3 km NNW of Jagual, Puerto Rico
- 2.1 12 km E of El Negro, Puerto Rico
- 2.5 7 km NNW of Trujillo Alto, 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.