Magnitude 3.0 - 70 miles S of Kaktovik
September 29, 2024 10:48:13 AKDT (September 29, 2024 18:48:13 UTC)
69.1549°N 144.4355°W Depth 4.3 miles (6 km)
This event has not been reviewed by a seismologist
- 76 miles (123 km) N of Arctic Village
- 103 miles (167 km) E of Pump Station #2
- 111 miles (179 km) E of Pump Station #3
- 119 miles (192 km) SE of Deadhorse
- 120 miles (194 km) SE of Prudhoe Bay
- 126 miles (204 km) SE of Pump Station #1
- 133 miles (215 km) NE of Pump Station #4
- 157 miles (254 km) N of Venetie
- 168 miles (272 km) NW of Old Crow
- 174 miles (282 km) N of Chalkyitsik
- 181 miles (293 km) N of Fort Yukon
- 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.
