⊕earthquakeactive

M3.3 Earthquake — 53 km N of Brenas, Puerto Rico

M3.3

18.9493°N, 66.3172°W·US-PR

Started 2h ago

USGS data as of 07:40 UTC

Event Details

Typeearthquake

SeverityM3.3

Statusactive

Location18.9493°N, 66.3172°W (PR)

Started2026-10-21T05:01:30.38+00:00

Last Updated2026-10-21T07:40:33.215+00:00

Sourceusgs

Source URLearthquake.usgs.gov

Confidence1.00

Impact Zones — modeled

Affected Zone

Shaking felt. Minor damage possible in vulnerable structures.

17.2 km

Zone estimates are based on scientific models and may differ from actual local conditions.

Impact Analysis

Population Exposed353,175

Structures in Zone93,044

Population from ACS 5-Year 2022 tract sampling; structure counts from Microsoft Building Footprints or Census ACS housing data, capped by USGS NLCD 2021 developed land. Estimates for situational awareness — not for actuarial, regulatory, or underwriting use.

Historical Comparison

1992 PR Earthquake45% match

M4.2 Earthquake in PR, 23km from current event

1994 PR Earthquake41% match

M4.2 Earthquake in PR, 39km from current event

1995 PR Earthquake35% match

M4.2 Earthquake in PR, 64km from current event

Historical comparison based on peril type, geography, and severity. Past events do not predict future outcomes.

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All US hazard profiles Scoring methodology

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Zone estimates are based on scientific models and may differ from actual local conditions.