Earthquakes in Isabela Municipio, Puerto Rico
The most recent earthquake of M2.5 or more near Isabela Municipio was M 2.8, 9 km NNW of Garrochales, Puerto Rico, 45 km (28 mi) E of the centre of Isabela Municipio, at 6:12 am AST on 11 November 2026, 87 km deep. At that size and distance it was probably too weak to feel at the centre of Isabela Municipio.
No earthquake of M1.5 or more was recorded within 50 km (31 mi) of the centre of Isabela Municipio in the last 24 hours.
- Last 24 hours
- 0
- Last 7 days
- 4
- Last 30 days
- 12 · an average 30 days here since 2016: 28
- Last 12 months
- 223 · largest M 3.9 on 3 October 2026
- Since 2016
- 3,674 earthquakes of M1.5 or more
- Largest since 2016
- M 4.3 on 14 October 2017, 21 km NW of Rincón, Puerto Rico
Latest quake, 24 hours and 7 days: the QuakeIndex database, which reads USGS every 30 seconds, read at ; 30 days and 12 months: the QuakeIndex catalogue, counted to · earthquakes of M1.5 or more within 50 km (31 mi) of the centre of Isabela Municipio · shaking is estimated for the centre with the intensity equation USGS Did You Feel It? uses
Elevated QuakeIndex 85 / 100
4 quakes of M1.5 or larger in the last 7 days within 50 km. Normal for here is 2 to 8 in a week.
Compared against Isabela Municipio, Puerto Rico's own 10 years · USGS catalogue · updated
If you felt one
- Was that an earthquake? — checks what was recorded near you in the last hour
- Report what you felt to USGS — reports go to USGS, not to us, and they are what produces the intensity maps
- Expect aftershocks, and be ready to Drop, Cover, and Hold On if you feel one; if you are in a damaged building, go outside and move away from it (Ready.gov, FEMA; what to do during and after an earthquake)
- Near the coast, go inland or to higher ground as soon as strong shaking stops (Ready.gov); official warnings are on Tsunami.gov
QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.
The last 30 days
Show these earthquakes on your own site: a free card with this strip and the latest quakes near Isabela Municipio, Puerto Rico, for a local news site, school or neighborhood page.
Live · last 7 days
Latest earthquakes within 50 km
None within 50 km in the latest snapshot we hold; the full 7 days load from USGS as this page opens.
Source USGS · snapshot of
The last 7 days on the map
Open the full map — zoom anywhere, or find your own location →
The centre is 18.484, -67.014, the Census internal point of Isabela Municipio, Puerto Rico from the US Census Bureau Gazetteer (2024). Activity on this page is measured within 50 km of it — the dashed circle.
Largest on record nearby
The strongest shaking this record implies at the centre of Isabela Municipio, Puerto Rico is intensity III (weak), from the M 4.3 of 2017, 42 km away. At that level a few people indoors notice it; most do not.
| Magnitude | When | Where | Shaking here (est.) |
|---|---|---|---|
| M 4.3 | 21 km NW of Rincón, Puerto Rico | III · Weak | |
| M 4.3 | 39 km NNW of San Antonio, Puerto Rico · felt by 34 | III · Weak | |
| M 4.2 | 15 km N of Isabela, Puerto Rico · felt by 9 | II · Weak | |
| M 4.0 | 13 km WNW of Rincón, Puerto Rico · felt by 18 | II · Weak | |
| M 3.9 | Mona Passage · felt by 37 | II · Weak | |
| M 3.9 | 2 km NNW of Monte Grande, Puerto Rico · felt by 44 | II · Weak | |
| M 3.9 | 2 km SSW of Utuado, Puerto Rico · felt by 5 | II · Weak | |
| M 3.9 | 47 km N of Hatillo, Puerto Rico · felt by 7 | II · Weak |
From the QuakeIndex catalogue, built from the USGS FDSN event service · within 50 km of the centre above. Shaking is an estimate for the centre from magnitude, depth and distance, with the intensity equation USGS Did You Feel It? uses (Atkinson & Wald, 2007), on the Modified Mercalli scale. Ground conditions change it locally; it is a description of the past, not a hazard rating.
Before 2016
The USGS record from 1900 to 2015 lists 12 earthquakes of M5 or more within 50 km of the centre of Isabela Municipio, Puerto Rico; the 8 largest:
- 7.7 45 km N of San Antonio, Puerto Rico · 48 km NNW of the centre
- 7.1 24 km NNW of San Antonio, Puerto Rico · 30 km NW of the centre
- 6.4 32 km NW of Aguadilla, Puerto Rico · 42 km WNW of the centre
- 6.3 6 km WNW of Aguadilla, Puerto Rico · 22 km WSW of the centre
- 6.1 15 km WNW of San Antonio, Puerto Rico · 24 km WNW of the centre
- 6.1 18 km NNW of San Antonio, Puerto Rico · 24 km NW of the centre
- 5.8 12 km N of Garrochales, Puerto Rico · 48 km E of the centre
- 5.8 33 km NW of San Antonio, Puerto Rico · 41 km NW of the centre
USGS ComCat, M5+ from 1900 to 2015. Epicentres of early earthquakes are estimates. This is the record, not a forecast.
Town pages near Isabela Municipio, Puerto Rico
Isabela 2 km · 207 M2.5+ named after it · Rafael Hernandez 7 km · 4 M2.5+ named after it · Quebradillas 8 km · 27 M2.5+ named after it · Aguadilla 16 km · 475 M2.5+ named after it · San Sebastián 17 km · 6 M2.5+ named after it · Hatillo 20 km · 57 M2.5+ named after it · Aguada 22 km · 20 M2.5+ named after it · Lares 26 km · 11 M2.5+ named after it · Rincón 30 km · 206 M2.5+ named after it · Arecibo 31 km · 255 M2.5+ named after it · Mayagüez 34 km · 188 M2.5+ named after it · San Germán 45 km · 21 M2.5+ named after it
Each town page lists every M1.5+ earthquake within 30 km since 2016 and the ones USGS named after it. Town names: GeoNames (CC BY 4.0).
Be ready
Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.
- Ready.gov: earthquakes (FEMA) — what to do before, during and after, including Drop, Cover, and Hold On
- Build a kit (FEMA) — water, food and supplies for several days; our summary
- USGS: preparedness — the hazard behind the advice, from the agency that records every quake on this page
- The Great ShakeOut — the yearly earthquake drill, with material for homes, schools and workplaces
- Tsunami.gov (NOAA) — the official tsunami warnings for the coast; a quake page here never stands in for one