The July 16, 1914 earthquake

M6.5near Adak, Alaska

A magnitude 6.5 earthquake 21.7 miles deep, 3.1 miles off Aleutians West Census Area. The 185th strongest in Alaska’s record since 1900, and the strongest within 50 miles since a magnitude 6.7 on December 10, 1905.

The earthquake

Magnitude: 6.5; moment magnitude (mw)
Depth: 21.7 mi; 35.0 km below the surface
Local time: Thursday, July 16, 1914; 20:07 NST; 07:07 UTC on Jul 17, 1914
Epicentre: 51.87°N, 175.81°W; 3.1 mi from Aleutians West Census Area
In Alaska’s record: 185th; strongest of 124,625 since 1900
Within 50 miles: 1; county; more on this date

USGS ANSS Comprehensive Earthquake Catalog, event iscgem913998 (“56 km E 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 · 3.1 mi

Earthquakes around the epicentre

2,566 earthquakes of magnitude 3 or more within 50 miles of this epicentre since 1973.

Earlier earthquakes of magnitude 5 or more within 50 miles, strongest first

February 13, 1905M7.6
December 10, 1905M6.7

USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.