Earthquake · reviewed by a seismologist
M 2.9md
Earthquake near Culebra, PR
Yes: an earthquake was likely felt in Culebra in the last 24 hours. M 2.9, 25 km (15 mi) ENE of Culebra, at 6:51 am AST on 11 November 2026 (10:51 UTC); the estimated shaking in Culebra was intensity II (weak). Every earthquake near Culebra
This page: a magnitude 2.9 earthquake was recorded 9 km (5 mi) west-northwest of Culebra, PR, at 1:15 am AST on 25 September 2026 (05:15 UTC), 18 km deep.
USGS: 8 km WNW of Culebra, Puerto Rico
73 km (45 mi) E of San Juan, PR
- When
- 1:15 am AST on 25 September 2026 ()
- Where
- 9 km (5 mi) west-northwest of Culebra, PR · earthquakes near Culebra
- Magnitude
- M 2.9 (md)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Nearest
- Culebra Municipio, 7 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 47 days ago
Earthquake alerts for Culebra, PR
Get a notification in this browser when USGS records an earthquake near Culebra, 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 27 km (17 mi) from the epicentre. In Culebra, 9 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.
Likely felt in: Culebra 9 km, intensity II · Isabel Segunda 22 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 720 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 21,000× the energy of this one
- Magna, Utah 2020 M 5.7 15,000× the energy of this one
- Around the size people start to feel M 3.0 1.3× the energy of this one
- This earthquake M 2.9 about 720 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 4.8 on 2021-10-08 — about 660 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 18.3362, -65.3772. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Culebra Municipio, PR | 7 km (5 mi) | E | earthquakes near Culebra Municipio |
| Fajardo Municipio, PR | 23 km (14 mi) | WNW | earthquakes near Fajardo Municipio |
| Vieques Municipio, PR | 24 km (15 mi) | SSW | earthquakes near Vieques Municipio |
| Ceiba Municipio, PR | 27 km (17 mi) | WSW | earthquakes near Ceiba Municipio |
| Luquillo Municipio, PR | 35 km (22 mi) | W | earthquakes near Luquillo Municipio |
| Naguabo Municipio, PR | 40 km (25 mi) | WSW | earthquakes near Naguabo Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
8 earthquakes have been recorded within 50 km since this one.
- 2.9 20 km WNW of Charlotte Amalie, U.S. Virgin Islands
- 3.1 53 km NNW of Culebra, Puerto Rico
- 3.1 33 km NNW of Culebra, Puerto Rico
- 2.9 22 km SE of Esperanza, Puerto Rico
- 2.5 10 km ESE of Esperanza, Puerto Rico
- 2.4 16 km SE of Esperanza, Puerto Rico
- 4.1 21 km SE of Esperanza, Puerto Rico
- 3.3 24 km ESE of Isabel Segunda, 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.