Magnitude 2.8 - 51 miles NW of Allakaket
April 18, 2026 22:23:52 AKDT (April 19, 2026 06:23:52 UTC)
67.2051°N 153.5803°W Depth 5.0 miles (8 km)
This event has been reviewed by a seismologist
- 55 miles (89 km) NW of Bettles
- 81 miles (131 km) SW of Anaktuvuk Pass
- 82 miles (132 km) N of Hughes
- 83 miles (134 km) W of Pump Station #5
- 91 miles (147 km) W of Coldfoot
- 91 miles (147 km) E of Kobuk
- 94 miles (152 km) W of Wiseman
- 98 miles (158 km) E of Shungnak
- 115 miles (186 km) E of Ambler
- 130 miles (210 km) NE of Huslia
- 138 miles (223 km) SW of Pump Station #4
- 232 miles (376 km) NW of Fairbanks
- Magnitude type: ML
- Event type: N/A
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.
