Magnitude 1.5 - 45 miles SW of Kaktovik
May 10, 2025 02:10:04 AKDT (May 10, 2025 10:10:04 UTC)
69.6044°N 144.7319°W Depth 0.0 miles (0 km)
This event has not been reviewed by a seismologist
- 93 miles (150 km) E of Pump Station #2
- 96 miles (155 km) SE of Prudhoe Bay
- 97 miles (157 km) SE of Deadhorse
- 102 miles (165 km) SE of Pump Station #1
- 104 miles (168 km) N of Arctic Village
- 113 miles (183 km) NE of Pump Station #3
- 141 miles (228 km) NE of Pump Station #4
- 180 miles (291 km) E of Umiat
- 184 miles (298 km) N of Venetie
- 195 miles (316 km) NW of Old Crow
- 201 miles (325 km) NE of Anaktuvuk Pass
- 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.
