Magnitude 1.3 - 58 miles NW of Allakaket
May 13, 2022 15:19:00 AKDT (May 13, 2022 23:19:00 UTC)
67.1816°N 154.0701°W Depth 4.1 miles (6 km)
This event has been reviewed by a seismologist
- 67 miles (108 km) W of Bettles
- 78 miles (126 km) E of Kobuk
- 79 miles (128 km) N of Hughes
- 85 miles (137 km) E of Shungnak
- 90 miles (145 km) SW of Anaktuvuk Pass
- 96 miles (155 km) W of Pump Station #5
- 102 miles (165 km) E of Ambler
- 104 miles (168 km) W of Coldfoot
- 107 miles (173 km) W of Wiseman
- 121 miles (196 km) NE of Huslia
- 150 miles (243 km) SW of Pump Station #4
- 241 miles (390 km) NW 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.
