Top magnitude events (US territory or direct impact):
| Date | Location | Magnitude |
|---|---|---|
| 1964 Mar 27 | Prince William Sound, AK | 9.2 |
| 1957 Mar 9 | Andreanof Islands, AK | 8.6 |
| 1965 Feb 4 | Rat Islands, AK | 8.7 |
| 1946 Apr 1 | Unimak Island, AK | 8.6 |
| 1938 Nov 10 | Shumagin Islands, AK | 8.2 |
| 2018 Jan 23 | Gulf of Alaska, AK | 7.9 |
| 2002 Nov 3 | Denali Fault, AK | 7.9 |
| 1906 Apr 18 | San Francisco, CA | 7.9 |
| 1811–12 Dec–Feb | New Madrid, MO | 7.7 (est.) |
| 1952 Jul 21 | Kern County, CA | 7.5 |
Alaska dominates; the 1964 Great Alaska Quake (9.2) is #2 globally. The original list included non-US events (Chile, Japan, Sumatra, Turkey)—those are excluded here.