I heard the tsunami in the 1963 Alaskan earthquake was 1000 feet. Can anyone verify it? Thanks.
1958 landslide in Lituya Bay, AK caused a 1700' tall Tsunamai.
http://www.extremescience.com/BiggestWave.htm
The tsunami height varied with the distance away from the earthqauke, but it was nowhere near 1000 feet.
However, in Valdez Harbor there was a gigantic landslide which caused a large seiche.