3.3
Earthquake Details: 53 km N of Brenas, Puerto Rico
Oct 21, 2026, 05:01:30
- Depth
- 26.34 km
- Felt reports
- No data
Source: USGSUpdated: Oct 21, 2026, 05:35 AM UTC
A magnitude 3.3 earthquake occurred on Oct 21, 2026 at 05:01:30. Epicenter: 53 km N of Brenas, Puerto Rico. Reported depth: 26.34 km.
Tsunami information
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Time & depth
- Local time
- Oct 21, 2026, 01:01:30 GMT-4
- UTC
- Oct 21, 2026, 05:01:30 UTC
26.34 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
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Nearby major cities
Nearby earthquakes · 12
M2.961 km E of Cruz Bay, U.S. Virgin IslandsBeforeM4.720 km SW of Sandy Point Town, Saint Kitts and NevisBeforeM3.467 km NNE of Punta Cana, Dominican RepublicBeforeM2.761 km NNE of Miches, Dominican RepublicBeforeM2.925 km WNW of Puerto Real, Puerto RicoBeforeM2.4Puerto Rico regionBeforeM2.46 km SSW of Guánica, Puerto RicoBeforeM2.945 km NNE of Cruz Bay, U.S. Virgin IslandsBeforeM2.624 km SSE of Maria Antonia, Puerto RicoBeforeM3.793 km N of Brenas, Puerto RicoBeforeM2.81 km W of Fuig, Puerto RicoBeforeM3.4117 km NE of Cruz Bay, U.S. Virgin IslandsAfter
Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 3.27
pr71537388
- Depth:
- 26.34 km
- Time:
- Updated:
- Oct 21, 2026, 05:35 AM UTC
Technical Details
Depth26.34 km
Significance165
Latitude18.9493
Longitude-66.3172
Event IDpr71537388
Magnitude3.3
Updated:Oct 21, 2026, 05:35:36 UTC
Regional Seismicity
External Resources
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Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Oct 21, 2026, 05:35 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0.
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies.
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.
- CENC / Wolfx — CENC earthquake parameters via Wolfx, an independent unofficial relay.
- GFZ / GEOFON — Locations, depths and magnitudes: GFZ/GEOFON using GEVN network data (CC BY 4.0).