The April 26, 1933 earthquake
M6.8Southern Alaska
A magnitude 6.8 earthquake 9.3 miles deep, 3.7 miles off Kenai Peninsula Borough. The 87th strongest in Alaska’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.
The earthquake
- Magnitude
- 6.8
- moment magnitude (mw)
- Depth
- 9.3 mi
- 15.0 km below the surface
- Local time
- Wednesday, April 26, 1933
- 16:36 AST; 02:36 UTC on Apr 27, 1933
- In Alaska’s record
- 87th
- strongest of 124,625 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event iscgem905539 (“Southern 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
- Kenai Peninsula BoroughAK · 3.7 mi
- Matanuska-Susitna BoroughAK · 8.1 mi
- Anchorage MunicipalityAK · 27.7 mi
Earthquakes around the epicentre
1,867 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.