Magnitude 2.9 - 40 miles E of Pump Station #3
April 2, 2024 16:44:43 AKDT (April 3, 2024 00:44:43 UTC)
68.6605°N 147.3123°W Depth 12.7 miles (20 km)
This event has been reviewed by a seismologist
- 54 miles (87 km) E of Pump Station #4
- 58 miles (94 km) NW of Arctic Village
- 63 miles (102 km) SE of Pump Station #2
- 109 miles (176 km) S of Deadhorse
- 113 miles (183 km) S of Prudhoe Bay
- 113 miles (183 km) NE of Wiseman
- 115 miles (186 km) S of Pump Station #1
- 117 miles (189 km) N of Venetie
- 118 miles (191 km) E of Anaktuvuk Pass
- 122 miles (197 km) NE of Coldfoot
- 129 miles (209 km) E of Umiat
- 264 miles (428 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.
