The August 16, 1906 earthquake
M8.3Western Aleutian Islands (Hawadax/Rat Islands), Alaska
A magnitude 8.3 earthquake 68.4 miles deep, 3.0 miles off Aleutians West Census Area. The 4th strongest in Alaska’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.
The earthquake
- Magnitude
- 8.3
- moment magnitude (mw)
- Depth
- 68.4 mi
- 110.0 km below the surface
- Local time
- Thursday, August 16, 1906
- 13:11 NST; 00:11 UTC on Aug 17, 1906
- In Alaska’s record
- 4th
- strongest of 124,625 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event iscgem16957912 (“1906 Western Aleutian Islands (Hawadax/Rat Islands) Earthquake”). 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 · 3.0 mi
Earthquakes around the epicentre
2,424 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.