Magnitude 3.3 - 43 miles SW of Kaktovik
February 19, 2025 05:26:27 AKST (February 19, 2025 14:26:27 UTC)
69.5656°N 144.4193°W Depth 6.3 miles (10 km)
This event has been reviewed by a seismologist
- 100 miles (162 km) E of Pump Station #2
- 103 miles (167 km) N of Arctic Village
- 104 miles (168 km) E of Deadhorse
- 104 miles (168 km) SE of Prudhoe Bay
- 110 miles (178 km) SE of Pump Station #1
- 119 miles (192 km) NE of Pump Station #3
- 146 miles (236 km) NE of Pump Station #4
- 184 miles (298 km) N of Venetie
- 187 miles (303 km) E of Umiat
- 188 miles (304 km) NW of Old Crow
- 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.
