August 24, 2024 12:45:44 AKDT (August 24, 2024 20:45:44 UTC)
67.4774°N 158.1173°W Depth 0.0 miles (0 km)
This event has not been verified by a seismologist
- 49 miles (79 km) northwest of Shungnak
- 52 miles (84 km) northwest of Kobuk
- 71 miles (115 km) northeast of Kiana
- 128 km northeast of Selawik
- 90 miles (145 km) northeast of Noorvik
- 126 miles (204 km) east of Kotzebue
- 128 miles (207 km) east of Noatak
- 130 miles (210 km) east of the Red Dog Mine
- 131 miles (212 km) north of Buckland
- 132 miles (214 km) north of Huslia
- 145 miles (235 km) northwest of Hughes
- 290 miles (470 km) northeast of Nome
- Size Type: Mm2
- Event type: Earthquake
Tectonic position of the Brooks Range
Seismicity in the Brooks Range is characterized by intraplate earthquakes associated with mountain building and crustal restructuring. A broad band of earthquakes extends from the northeast of the Brooks Range toward the Beaufort Sea. Earthquake source mechanisms include a mix of strike-slip and normal faulting, indicating north-northwest compression and northeast extension. A magnitude 6.4 earthquake on August 12, 2018, 69 km south of Kaktovik, was the strongest earthquake ever recorded north of the Brooks Range. It generated an energetic aftershock sequence that continues to this day. In 2019, a violent swarm sequence began in the Purcell Mountains. By the end of 2021, more than 9,000 earthquakes had been recorded as part of this swarm, including five earthquakes with a magnitude greater than 5. Currently, this swarm is ongoing, albeit with reduced activity.
