Earthquake · reviewed by a seismologist
M 3.5md
118 km N of Brenas, Puerto Rico
Yes. A magnitude 3.5 earthquake was recorded 118 km N of Brenas, Puerto Rico, at 9:14 am AST on 15 February 2026 (13:14 UTC), 37 km deep. 1 person has reported feeling it to USGS.
- When
- Magnitude
- M 3.5 (md)
- Depth
- 37 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Dorado Municipio, 118 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 269 days ago
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 51 km (32 mi) from the epicentre. 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.
How big was it?
This earthquake released about 2.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 63,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 2,800× the energy of this one
- Magna, Utah 2020 M 5.7 2,000× the energy of this one
- This earthquake M 3.5 about 2.7 tons of TNT
- Around the size people start to feel M 3.0 this one released 5.6× more
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 4.4 on 2016-10-23 — about 22 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 5.4 106 km N of Brenas, Puerto Rico · 17 km SW of this epicentre
- 5.0 113 km N of Brenas, Puerto Rico · 8 km SW 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 19.5395, -66.2755. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Dorado Municipio, PR | 118 km (74 mi) | S | earthquakes near Dorado Municipio |
| Barceloneta Municipio, PR | 123 km (76 mi) | SSW | earthquakes near Barceloneta Municipio |
| Quebradillas Municipio, PR | 138 km (86 mi) | SSW | earthquakes near Quebradillas Municipio |
| Isabela Municipio, PR | 141 km (87 mi) | SSW | earthquakes near Isabela Municipio |
| Aguadilla Municipio, PR | 149 km (93 mi) | SW | earthquakes near Aguadilla Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
31 earthquakes have been recorded within 50 km since this one.
- 3.6 93 km N of Brenas, Puerto Rico
- 3.1 75 km N of Brenas, Puerto Rico
- 3.2 93 km N of San Juan, Puerto Rico
- 3.7 117 km N of San Juan, Puerto Rico
- 3.3 80 km N of San Juan, Puerto Rico
- 3.4 123 km N of Tierras Nuevas Poniente, Puerto Rico
- 3.3 113 km NNE of San Juan, Puerto Rico
- 3.1 75 km N of Tierras Nuevas Poniente, Puerto Rico
- 3.4 121 km NNE of San Juan, Puerto Rico
- 3.1 75 km N of Tierras Nuevas Poniente, Puerto Rico
- 3.6 95 km N of San Juan, Puerto Rico
- 3.6 121 km N of Hatillo, Puerto Rico
- 3.4 108 km NNE of San Juan, Puerto Rico
- 3.6 104 km N of San Juan, Puerto Rico
- 3.8 113 km N of San Juan, 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.