Magnitude 2.1 - 27 miles E of Arctic Village
October 8, 2019 21:18:57 AKDT (October 9, 2019 05:18:57 UTC)
68.1845°N 144.4928°W Depth 12.3 miles (19 km)
This event has been reviewed by a seismologist
- 96 miles (155 km) NE of Venetie
- 108 miles (175 km) N of Chalkyitsik
- 114 miles (184 km) N of Fort Yukon
- 119 miles (192 km) E of Pump Station #3
- 125 miles (202 km) E of Pump Station #4
- 134 miles (217 km) NW of Old Crow
- 134 miles (217 km) SE of Pump Station #2
- 136 miles (220 km) S of Kaktovik
- 138 miles (223 km) N of Birch Creek
- 148 miles (239 km) NE of Beaver
- 156 miles (252 km) NE of Wiseman
- 248 miles (402 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.