The December 22, 1906 earthquake
M6.6near Nikolski, Alaska
A magnitude 6.6 earthquake 21.7 miles deep, 47.8 miles off Aleutians West Census Area. The 172nd strongest in Alaska’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.
The earthquake
- Magnitude
- 6.6
- moment magnitude (mw)
- Depth
- 21.7 mi
- 35.0 km below the surface
- Local time
- Saturday, December 22, 1906
- 20:01 NST; 07:01 UTC on Dec 23, 1906
- In Alaska’s record
- 172nd
- strongest of 124,625 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event iscgem610548675 (“135 km SW of Nikolski, 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 · 47.8 mi
Earthquakes around the epicentre
1,937 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.