Magnitude 1.1 - 32 miles N of Venetie
April 21, 2019 02:14:51 AKDT (April 21, 2019 10:14:51 UTC)
67.4348°N 145.965°W Depth 1.2 miles (1 km)
This event has been reviewed by a seismologist
- 49 miles (79 km) S of Arctic Village
- 63 miles (102 km) N of Fort Yukon
- 81 miles (131 km) NW of Chalkyitsik
- 82 miles (132 km) N of Birch Creek
- 84 miles (136 km) NE of Beaver
- 110 miles (178 km) E of Wiseman
- 111 miles (179 km) SE of Pump Station #4
- 113 miles (183 km) E of Coldfoot
- 122 miles (197 km) SE of Pump Station #3
- 123 miles (199 km) NW of Circle
- 131 miles (212 km) NE of Stevens Village
- 186 miles (301 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.