Magnitude 1.5 - 42 miles S of Kaktovik
May 7, 2025 08:27:41 AKDT (May 7, 2025 16:27:41 UTC)
69.5653°N 144.2673°W Depth 0.0 miles (0 km)
This event has not been reviewed by a seismologist
- 104 miles (168 km) E of Pump Station #2
- 105 miles (170 km) N of Arctic Village
- 108 miles (175 km) E of Deadhorse
- 108 miles (175 km) SE of Prudhoe Bay
- 114 miles (184 km) SE of Pump Station #1
- 123 miles (199 km) NE of Pump Station #3
- 149 miles (241 km) NE of Pump Station #4
- 185 miles (299 km) NW of Old Crow
- 185 miles (299 km) N of Venetie
- 191 miles (309 km) E of Umiat
- 202 miles (327 km) N of Chalkyitsik
- 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.
