The May 1, 1990 earthquake
M6.6near King Salmon, Alaska
A magnitude 6.6 earthquake 156.6 miles deep, centred in Lake and Peninsula Borough. The 151st 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
- 156.6 mi
- 252.0 km below the surface
- Local time
- Tuesday, May 1, 1990
- 08:12 AKDT; 16:12 UTC
- In Alaska’s record
- 151st
- strongest of 124,625 since 1900
USGS ANSS Comprehensive Earthquake Catalog, event ak9905kdmjlk (“19 km SSE of King Salmon, 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 · inside
- Bristol Bay BoroughAK · 10.4 mi
- Dillingham Census AreaAK · 32.7 mi
- Kodiak Island BoroughAK · 48.7 mi
Earthquakes around the epicentre
381 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
- June 3, 1917M5.9
USGS ANSS Comprehensive Earthquake Catalog. Local time is the time zone of the county nearest the epicentre. Magnitudes are as the catalogue reports them.