Magnitude 1.5 - 66 miles N of Arctic Village
June 9, 2021 18:32:29 AKDT (June 10, 2021 02:32:29 UTC)
69.0698°N 145.0669°W Depth 0.5 miles (0 km)
This event has been reviewed by a seismologist
- 81 miles (131 km) SW of Kaktovik
- 90 miles (145 km) E of Pump Station #2
- 95 miles (154 km) E of Pump Station #3
- 112 miles (181 km) SE of Deadhorse
- 113 miles (183 km) SE of Prudhoe Bay
- 116 miles (188 km) NE of Pump Station #4
- 118 miles (191 km) SE of Pump Station #1
- 147 miles (238 km) N of Venetie
- 171 miles (277 km) N of Chalkyitsik
- 173 miles (280 km) NE of Wiseman
- 174 miles (282 km) N of Fort Yukon
- 301 miles (488 km) N 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.