The February 13, 1905 earthquake
M7.6near Adak, Alaska
A magnitude 7.6 earthquake 21.7 miles deep, centred in Aleutians West Census Area. The 20th strongest in Alaska’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.
The earthquake
- Magnitude
- 7.6
- moment magnitude (mw)
- Depth
- 21.7 mi
- 35.0 km below the surface
- Local time
- Monday, February 13, 1905
- 21:46 NST; 08:46 UTC on Feb 14, 1905
- In Alaska’s record
- 20th
- strongest of 124,625 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event iscgem16957835 (“5 km WNW of Adak, Alaska”). The USGS event page carries the ShakeMap, felt reports and the official summary.
Counties and cities within 50 miles
Distance from the epicentre to each county boundary (zero when inside) and to each city centre.
Counties
- Aleutians West Census AreaAK · inside
Earthquakes around the epicentre
2,075 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.
No earlier earthquake of magnitude 5 or more within 50 miles in the catalogue since 1900.
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.