Magnitude 3.4 - 48 miles S of Kaktovik
January 1, 2024 09:07:22 AKST (January 1, 2024 18:07:22 UTC)
69.4568°N 144.1662°W Depth 3.4 miles (5 km)
This event has been reviewed by a seismologist
- 98 miles (158 km) N of Arctic Village
- 106 miles (171 km) E of Pump Station #2
- 113 miles (183 km) SE of Deadhorse
- 113 miles (183 km) SE of Prudhoe Bay
- 119 miles (192 km) SE of Pump Station #1
- 122 miles (197 km) NE of Pump Station #3
- 147 miles (238 km) NE of Pump Station #4
- 178 miles (288 km) NW of Old Crow
- 179 miles (290 km) N of Venetie
- 194 miles (314 km) N of Chalkyitsik
- 194 miles (314 km) E of Umiat
- 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.
