⊕earthquakeactive
M4.9 Earthquake — 83 km SSE of Atka, Alaska
M4.9
51.5554° N, 173.5639° W·US-AK
Started 4h agoEvent Details
Typeearthquake
SeverityM4.9
Statusactive
Location51.5554°N, 173.5639°W (US-AK)
Started2026-08-01T23:07:03.666+00:00
Last Updated2026-08-02T04:00:42.07+00:00
Sourceusgs
Source URLearthquake.usgs.gov
Confidence1.00
Impact Zones
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 Exposed1,254,712
Structures in Zone833
Hospitals35
Schools248
Fire Stations142
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.