⊕earthquakeactive
M5.1 Earthquake — 107 km SE of Atka, Alaska
M5.1 MODERATE
51.4440° N, 173.2300° W·US-AK
Started 2d agoEvent Details
Typeearthquake
SeverityM5.1 MODERATE
Statusactive
Location51.4440°N, 173.2300°W (US-AK)
Started2026-07-23T09:30:16.307+00:00
Last Updated2026-07-23T09:52:43.419+00:00
Sourceusgs
Source URLearthquake.usgs.gov
Confidence1.00
Impact Zones
Severe Impact Zone
Significant structural damage possible. Exercise extreme caution.
Moderate Impact Zone
Light to moderate damage. Check structures for damage.
Affected Zone
Shaking felt. Minor damage possible in vulnerable structures.
Zone estimates are based on scientific models and may differ from actual local conditions.
Impact Analysis
Population Exposed150,370
Structures in Zone57,284
Hospitals90
Schools632
Fire Stations360
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
No historical analogs available yet.
Related
Zone estimates are based on scientific models and may differ from actual local conditions.