The September 27, 1941 earthquake
M6.5near Chignik, Alaska
A magnitude 6.5 earthquake 62.1 miles deep, 6.9 miles off Lake and Peninsula Borough. The 187th strongest in Alaska’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.
The earthquake
- Magnitude
- 6.5
- body-wave magnitude (mb)
- Depth
- 62.1 mi
- 100.0 km below the surface
- Local time
- Saturday, September 27, 1941
- 19:34 AST; 05:34 UTC on Sep 28, 1941
- In Alaska’s record
- 187th
- strongest of 124,625 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event ushis1378 (“60 km ENE of Chignik, 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
- Lake and Peninsula BoroughAK · 6.9 mi
- Kodiak Island BoroughAK · 33.0 mi
Earthquakes around the epicentre
533 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.