The October 9, 1900 earthquake
M7.9Kodiak Island region, Alaska
A magnitude 7.9 earthquake 12.4 miles deep, 44.9 miles off Kodiak Island Borough. The 11th strongest in Alaska’s record since 1900, and the strongest within 50 miles in the catalogue, which runs from 1900.
The earthquake
- Magnitude
- 7.9
- moment magnitude (mw)
- Depth
- 12.4 mi
- 20.0 km below the surface
- Local time
- Tuesday, October 9, 1900
- 02:28 AST; 12:28 UTC
- In Alaska’s record
- 11th
- strongest of 124,625 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event official19001009122400000 (“Kodiak Island region, 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
- Kodiak Island BoroughAK · 44.9 mi
Earthquakes around the epicentre
61 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.