Earthquake · reviewed by a seismologist
M 3.0md
Earthquake near Guánica, PR
Yes: an earthquake was likely felt in Guánica in the last 24 hours. M 2.1, 7 km (4 mi) ENE of Guánica, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Guánica was intensity II (weak). Every earthquake near Guánica
This page: a magnitude 3.0 earthquake was recorded 2 km (1 mi) south of Guánica, PR, at 11:43 am AST on 20 July 2026 (15:43 UTC), 13 km deep.
USGS: 2 km S of Guánica, Puerto Rico
31 km (19 mi) W of Ponce, PR
- When
- 11:43 am AST on 20 July 2026 ()
- Where
- 2 km (1 mi) south of Guánica, PR · earthquakes near Guánica
- Magnitude
- M 3.0 (md)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- Guánica Municipio, 2 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 114 days ago
Earthquake alerts for Guánica, PR
Get a notification in this browser when USGS records an earthquake near Guánica, 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 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 35 km (22 mi) from the epicentre. In Guánica, 2 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: Yauco 11 km, intensity III · Guayanilla 14 km, intensity II · Magas Arriba 16 km, intensity II · San Germán 20 km, intensity II · Tallaboa 21 km, intensity II · Tallaboa Alta 25 km, intensity II · Pole Ojea 29 km, intensity II · Adjuntas 31 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1,000 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 6.7 330,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
- Magna, Utah 2020 M 5.7 10,000× the energy of this one
- This earthquake M 3.0 about 1,000 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 6.4 on 2020-01-07 — about 120,000 times the energy of this one.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
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 17.9515, -66.9083. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Guánica Municipio, PR | 2 km (1 mi) | WSW | earthquakes near Guánica Municipio |
| Guayanilla Municipio, PR | 13 km (8 mi) | ENE | earthquakes near Guayanilla Municipio |
| Lajas Municipio, PR | 14 km (9 mi) | WNW | earthquakes near Lajas Municipio |
| Sabana Grande Municipio, PR | 15 km (10 mi) | NNW | earthquakes near Sabana Grande Municipio |
| Yauco Municipio, PR | 16 km (10 mi) | NNE | earthquakes near Yauco Municipio |
| Peñuelas Municipio, PR | 21 km (13 mi) | ENE | earthquakes near Peñuelas Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 1.6 4 km SW of Indios, Puerto Rico
- 1.8 4 km SSW of Indios, Puerto Rico
- 1.9 4 km SSW of Indios, Puerto Rico
- 3.5 4 km SSW of Indios, Puerto Rico
- 1.7 3 km WSW of Indios, Puerto Rico
- 2.3 4 km SSW of Indios, Puerto Rico
- 2.1 4 km SSW of Indios, Puerto Rico
- 2.0 2 km ESE of Palomas, Puerto Rico
- 1.8 3 km SW of Fuig, Puerto Rico
- 1.9 2 km NW of Indios, Puerto Rico
- 2.5 6 km SSE of Maria Antonia, Puerto Rico
- 1.9 1 km NNE of Fuig, Puerto Rico
- 2.1 1 km S of Guánica, Puerto Rico
- 2.1 4 km SW of Indios, Puerto Rico
- 2.1 7 km SSW of Tallaboa, 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.