August 11, 2024 2:06:14 PM AKDT (August 11, 2024 10:06:14 PM UTC)
66.9917°N 154.7888°W Depth 0.0 miles (0 km)
This event has not been verified by a seismologist
- 64 miles (103 km) east of Shungnak
- 66 miles (107 km) northwest of Allakaket
- 67 miles (108 km) north of Hughes
- 83 miles (134 km) east of Ambler
- 84 miles (136 km) west of Bettles
- 100 miles (162 km) northeast of Huslia
- 113 miles (183 km) SW of Anaktuvuk Pass
- 113 miles (183 km) west of Pumping Station No. 5
- 125 miles (202 km) west of Coldfoot
- 129 miles (209 km) west of Wiseman
- 144 miles (233 km) east of Selawik
- 249 miles (403 km) northwest of Fairbanks
- 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.
