Magnitude 4.0 - 10 miles NW of Fort Yukon
June 9, 2025 18:26:50 AKDT (June 10, 2025 02:26:50 UTC)
66.6664°N 145.5238°W Depth 8.7 miles (14 km)
No reports of this event being felt have been received at this time.
This event has been reviewed by a seismologist
- 29 miles (47 km) N of Birch Creek
- 34 miles (55 km) SE of Venetie
- 49 miles (79 km) W of Chalkyitsik
- 56 miles (90 km) NE of Beaver
- 71 miles (115 km) NW of Circle
- 78 miles (126 km) N of Central
- 101 miles (163 km) S of Arctic Village
- 109 miles (176 km) NE of Stevens Village
- 116 miles (188 km) NE of Livengood
- 121 miles (196 km) NE of Chatanika
- 122 miles (197 km) NE of Pump Station #7
- 141 miles (228 km) NE of Fairbanks
- Magnitude type: Ml
- Event type: earthquake
Tectonic Setting of the Brooks Range
Seismicity in the Brooks Range is characterized by intraplate earthquakes associated with mountain building and crustal reorganization. A broad earthquake band extends from northeast of the Brooks Range toward the Beaufort Sea. Earthquake source mechanisms comprise a mixture of strike-slip and normal faulting events, indicative of north-northwest compression and northeast extension. A magnitude 6.4 earthquake on August 12, 2018 located 43 miles (69 km) south of Kaktovik was the largest earthquake ever recorded north of the Brooks Range. It produced an energetic aftershock sequence that continues to this day. In 2019, a vigorous swarm sequence began in the Purcell Mountains. More than 9,000 earthquakes have been recorded as part of this swarm through the end of 2021, including five earthquakes with magnitudes larger than 5. At present, this swarm continues, though at a decreased activity level.
