Magnitude 1.4 - 45 miles SE of Pump Station #4
June 22, 2025 18:43:44 AKDT (June 23, 2025 02:43:44 UTC)
67.9869°N 148.0428°W Depth 0.0 miles (0 km)
This event has not been reviewed by a seismologist
- 62 miles (100 km) S of Pump Station #3
- 65 miles (105 km) W of Arctic Village
- 67 miles (108 km) NE of Wiseman
- 76 miles (123 km) NE of Coldfoot
- 80 miles (129 km) NW of Venetie
- 96 miles (155 km) E of Anaktuvuk Pass
- 103 miles (167 km) S of Pump Station #2
- 107 miles (173 km) NE of Pump Station #5
- 114 miles (184 km) N of Beaver
- 122 miles (197 km) NE of Bettles
- 123 miles (199 km) NW of Fort Yukon
- 218 miles (353 km) N 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.
