Magnitude 1.8 - 63 miles SE of Chisana
June 10, 2021 02:16:49 AKDT (June 10, 2021 10:16:49 UTC)
61.5485°N 140.7233°W Depth 3.0 miles (4 km)
This event has been reviewed by a seismologist
- 64 miles (103 km) NW of Burwash Landing
- 73 miles (118 km) E of McCarthy
- 94 miles (152 km) SE of Nabesna
- 105 miles (170 km) S of Northway
- 112 miles (181 km) E of Mt. Wrangell
- 115 miles (186 km) N of Icy Bay
- 118 miles (191 km) NE of Cape Yakataga
- 120 miles (194 km) NW of Haines Junction
- 122 miles (197 km) E of Chitina
- 124 miles (201 km) SE of Tetlin
- 131 miles (212 km) SE of Slana
- 143 miles (231 km) N of Yakutat
- 304 miles (492 km) E of Anchorage
- 313 miles (507 km) NW of Juneau
- Magnitude type: Ml2
- Event type: earthquake
Tectonic Setting of the Denali Fault
The Denali Fault is a major intracontinental right-lateral strike-slip fault that partially accommodates the oblique collision of the Yakutat block into Alaska's margin, extending from northwestern British Columbia to the central and western regions of Alaska. The largest earthquake recorded on the Denali Fault was a M7.9 on November 3, 2002. Its rupture extended for nearly 270 miles (435 km) along the central Denali Fault system. This event was preceded by the M6.7 Nenana Mountain Earthquake on October 23, which ruptured 25 miles (40 km) of the Denali Fault west of the M7.9 event. It is typical behavior of these major right-lateral faults in the Interior to produce very low background levels of seismicity between large ruptures hundreds of years apart that are followed by multi-year aftershock sequences. Another notable feature associated with the Denali Fault system is the Kantishna seismic cluster, located just north of the main fault trace inside Denali National Park. This cluster produces tens of small, shallow earthquakes every day. The largest known earthquakes in this cluster are on the order of magnitude 5, but those are rare. This cluster is believed to accommodate deformation between the Denali Fault and the Minto Flats Seismic Zone to the north.