On 30/04/2026 01:05 UTC a magnitude 4.1 earthquake occurred near N of Yakutat, the United States. Hypocentre depth: 5 km. Coordinates: 60.497°, -139.643°.
Event technical data
| Magnitude | M 4.1 |
| Depth | 5 km |
| Coordinates | 60.4967°, -139.6426° |
| Time (UTC) | 2026-04-30 01:05 UTC |
| Location | 105 km N of Yakutat, Alaska |
Seismic context
Technical analysis: The western United States (San Andreas system, Cascadia subduction zone) and Alaska are among the most seismically active regions in North America.
Geotechnical relevance
For geotechnical engineering in the United States, monitoring local seismicity supports site-specific hazard assessment, liquefaction screening of saturated sands, seismic slope-stability checks and foundation design for dynamic loads. Each recorded event refines local ground-motion and attenuation models.
Official source
USGS Earthquake Hazards Program — official national earthquake monitoring authority. Visit USGS Earthquake Hazards Program →
Cross-checked with the global USGS catalogue.
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