Magnitude 3.9 - 38 miles W of Dixon Entrance
September 21, 2024 08:30:33 AKDT (September 21, 2024 16:30:33 UTC)
54.3296°N 133.9376°W Depth 1.9 miles (3 km)
This event has been reviewed by a seismologist
- 75 miles (121 km) SW of Hydaburg
- 85 miles (137 km) S of Craig
- 91 miles (147 km) S of Klawock
- 103 miles (167 km) SW of Kasaan
- 109 miles (176 km) SW of Metlakatla
- 109 miles (176 km) SW of Thorne Bay
- 115 miles (186 km) SW of Ketchikan
- 115 miles (186 km) SW of Ward Cove
- 116 miles (188 km) SW of Saxman
- 135 miles (218 km) S of Port Alexander
- 140 miles (226 km) S of Point Baker
- 275 miles (445 km) S of Juneau
- Magnitude type: Ml2
- Event type: earthquake
Tectonic Setting of Southeast Alaska
Earthquakes in Southeast Alaska have shallow depths and are generally located along the Queen Charlotte and Fairweather faults, both of which are major transform plate boundaries. The Queen Charlotte Fault runs between the Pacific and North American plates, while the Fairweather Fault runs between the Yakutat microplate and North American Plate. The entire length of this fault system ruptured in major earthquakes over the past 90 years. The most significant event was a 1949 M8.1 earthquake that began in British Columbia and ruptured both south and north for a total of about 300 miles (483 km), crossing the border with Alaska. Other significant events in the region were the 1927 M7.1 event north of Sitka, and the 1958 M7.7 Lituya Bay, the 1972 M7.6 Sitka, and the 2013 M7.5 Craig earthquakes. The 2013 Craig Earthquake re-ruptured the northernmost part of the 1949 rupture zone.
