4.0
Earthquake Details: 203 km SE of Perryville, Alaska
Aug 29, 2026, 22:38:40
A magnitude 4.0 earthquake occurred near 203 km SE of Perryville, Alaska on Aug 29, 2026 at 22:38:40. The seismic event was recorded at a depth of 10 km. No tsunami warning was issued.
No Tsunami WarningStatus: ReviewedType: Earthquake
Regional Seismicity
Technical Details
Depth10 km
Significance246
Latitude54.6921
Longitude-156.7466
Event IDus7000tcvg
Magnitude4.0
Updated:Aug 29, 2026, 23:24:07 UTC
External Resources
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Time & depth
- Local time
- Aug 29, 2026, 14:38:40 AKDT
- UTC
- Aug 29, 2026, 22:38:40 UTC
10 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 12
M2.9105 km SE of False Pass, AlaskaBeforeM4.8195 km SE of Akutan, AlaskaBeforeM2.7193 km SE of Akutan, AlaskaBeforeM2.7206 km S of False Pass, AlaskaBeforeM3.197 km S of Akhiok, AlaskaBeforeM3.385 km SSE of False Pass, AlaskaBeforeM3.374 km SSE of False Pass, AlaskaBeforeM3.5212 km SSE of False Pass, AlaskaBeforeM3.4215 km SSE of False Pass, AlaskaBeforeM4.8184 km SE of Perryville, AlaskaBeforeM3.9125 km SE of Perryville, AlaskaAfterM2.8252 km SE of Akutan, AlaskaAfter
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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: Aug 29, 2026, 23:24 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0. 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. CC BY 4.0
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.