Magnitude 2.1 - 45 miles SE of Pump Station #4
April 21, 2025 21:49:38 AKDT (April 22, 2025 05:49:38 UTC)
67.8276°N 148.6454°W Depth 12.2 miles (19 km)
This event has not been reviewed by a seismologist
- 48 miles (77 km) NE of Wiseman
- 57 miles (92 km) NE of Coldfoot
- 70 miles (113 km) S of Pump Station #3
- 82 miles (132 km) NW of Venetie
- 83 miles (134 km) E of Anaktuvuk Pass
- 83 miles (134 km) W of Arctic Village
- 88 miles (142 km) NE of Pump Station #5
- 103 miles (167 km) NE of Bettles
- 107 miles (173 km) N of Beaver
- 113 miles (183 km) S of Pump Station #2
- 126 miles (204 km) NW of Fort Yukon
- 208 miles (337 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.
