3.5
Earthquake Details: 31 km SE of Chickaloon, Alaska, United States
8/20/2026, 5:58:27 PM
A magnitude 3.5 earthquake occurred near 31 km SE of Chickaloon, Alaska, United States on 8/20/2026 at 5:58:27 PM. The seismic event was recorded at a depth of 12.4 km. No tsunami warning was issued.
No Tsunami WarningStatus: reviewedType: earthquake
Regional Seismicity
Technical Details
Depth12.4 km
Significance190
Latitude61.5660
Longitude-148.1030
Event IDaka2026qmbais
Magnitude3.5
Updated:8/20/2026, 7:30:46 PM
External Resources
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Time & depth
- Local time
- 8/20/2026, 9:58:27 AM AKDT
- UTC
- 8/20/2026, 5:58:27 PM UTC
12.4 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
Nearby major cities
Nearby event sequence · 12
M2.85 km NNW of Diamond Ridge, Alaska, United StatesBeforeM2.933 km ESE of Point Possession, Alaska, United StatesBeforeM2.97 km WSW of Point MacKenzie, Alaska, United StatesBeforeM2.752 km S of Cantwell, Alaska, United StatesBeforeM2.723 km NNW of Susitna, Alaska, United StatesBeforeM2.857 km WNW of Skwentna, Alaska, United StatesBeforeM3.348 km ESE of Port Alsworth, Alaska, United StatesBeforeM3.745 km W of Happy Valley, Alaska, United StatesBeforeM2.960 km NNW of Petersville, Alaska, United StatesBeforeM2.963 km W of Happy Valley, Alaska, United StatesBeforeM3.023 km ESE of Elmendorf Air Force Base, Alaska, United StatesBeforeM2.647 km ENE of Pedro Bay, Alaska, United StatesBefore
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 20, 2026, 07:30 PM 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.