Earthquake · reviewed by a seismologist
M 2.2Md
Earthquake near Central Aguirre, PR
No earthquake was likely felt in Central Aguirre in the 24 hours to 10:17 am AST (14:17 UTC). The last one was M 3.0, 23 km (14 mi) WSW, at 7:09 pm AST on 5 November 2026, estimated intensity II (weak) in town. Every earthquake near Central Aguirre
This page: a magnitude 2.2 earthquake was recorded 8 km (5 mi) south-southwest of Central Aguirre, PR, at 1:22 am AST on 15 January 2017 (05:22 UTC), 16 km deep.
USGS: 8 km SSW of Central Aguirre, Puerto Rico
61 km (38 mi) SSW of San Juan, PR · 41 km (25 mi) ESE of Ponce, PR
- When
- 1:22 am AST on 15 January 2017 ()
- Where
- 8 km (5 mi) south-southwest of Central Aguirre, PR · earthquakes near Central Aguirre
- Magnitude
- M 2.2 (Md)
- Depth
- 16 km below the surface
- Felt
- no reports yet
- Nearest
- Salinas Municipio, 10 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3587 days ago
Earthquake alerts for Central Aguirre, 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 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 9 km (6 mi) from the epicentre. In Central Aguirre, 8 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: Coquí, Salinas, Jobos, Las Ochenta, Coco, Jauca.
How big was it?
This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
- Magna, Utah 2020 M 5.7 180,000× the energy of this one
- Around the size people start to feel M 3.0 16× the energy of this one
- This earthquake M 2.2 about 60 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 4,000 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 · 44 km NNE 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 17.8855, -66.2575. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Salinas Municipio, PR | 10 km (6 mi) | N | earthquakes near Salinas Municipio |
| Santa Isabel Municipio, PR | 16 km (10 mi) | WNW | earthquakes near Santa Isabel Municipio |
| Guayama Municipio, PR | 16 km (10 mi) | NE | earthquakes near Guayama Municipio |
| Arroyo Municipio, PR | 25 km (15 mi) | ENE | earthquakes near Arroyo Municipio |
| Coamo Municipio, PR | 26 km (16 mi) | NNW | earthquakes near Coamo Municipio |
| Cayey Municipio, PR | 27 km (17 mi) | NNE | earthquakes near Cayey Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
48 earthquakes have been recorded within 50 km since this one.
- 2.3 8 km ESE of Jayuya, Puerto Rico
- 1.9 Puerto Rico region
- 1.8 2 km WSW of Villalba, Puerto Rico
- 2.5 10 km S of Emajagua, Puerto Rico
- 2.4 9 km S of Emajagua, Puerto Rico
- 2.1 11 km S of Emajagua, Puerto Rico
- 2.3 4 km WNW of Villalba, Puerto Rico
- 1.8 3 km S of Cayey, Puerto Rico
- 2.5 3 km SE of Salinas, Puerto Rico
- 2.7 1 km S of Las Ochenta, Puerto Rico
- 2.0 3 km NW of Villalba, Puerto Rico
- 2.8 55 km S of Central Aguirre, Puerto Rico
- 1.9 7 km WSW of Orocovis, Puerto Rico
- 2.2 23 km S of Ponce, Puerto Rico
- 1.9 13 km S of Ponce, 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.