Magnitude 2.2 - 34 miles NE of Kobuk
March 28, 2024 11:46:39 AKDT (March 28, 2024 19:46:39 UTC)
67.3249°N 156.2042°W Depth 4.3 miles (6 km)
This event has been reviewed by a seismologist
- 39 miles (63 km) NE of Shungnak
- 47 miles (76 km) E of Ambler
- 103 miles (167 km) NW of Hughes
- 110 miles (178 km) NW of Allakaket
- 113 miles (183 km) N of Huslia
- 114 miles (184 km) NE of Selawik
- 116 miles (188 km) E of Kiana
- 125 miles (202 km) W of Bettles
- 130 miles (210 km) SW of Anaktuvuk Pass
- 134 miles (217 km) E of Noorvik
- 151 miles (244 km) NE of Buckland
- 293 miles (475 km) NW of Fairbanks
- Magnitude type: Ml2
- 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.