Magnitude 0.9 - 38 miles NW of Beaver
August 14, 2019 03:20:18 AKDT (August 14, 2019 11:20:18 UTC)
66.6741°N 148.5235°W Depth 6.4 miles (10 km)
This event has been reviewed by a seismologist
- 49 miles (79 km) N of Stevens Village
- 59 miles (95 km) E of Pump Station #5
- 60 miles (97 km) SE of Coldfoot
- 62 miles (100 km) W of Venetie
- 66 miles (107 km) NE of Pump Station #6
- 66 miles (107 km) SE of Wiseman
- 80 miles (129 km) W of Birch Creek
- 80 miles (129 km) N of Livengood
- 87 miles (141 km) E of Bettles
- 90 miles (145 km) W of Fort Yukon
- 93 miles (150 km) NE of Rampart
- 129 miles (209 km) N of Fairbanks
- Magnitude type: Ml
- 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.
